Open Collections

DEVELOPMENT AND APPLICATION OF A TECHNIQUE FOR EVALUATING ROOT ZONE DRAINAGE by  ROBERT PETER WILLINGTON B.S.F., U n i v e r s i t y M.Sc, University  of B r i t i s h Columbia, 1967 of B r i t i s h Columbia, 1969  A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE  REQUIREMENTS FOR THE DEGREE OF  DOCTOR OF PHILOSOPHY (Forest  Hydrology)  i n the Department of FORESTRY Lie accept t h i s t h e s i s as conforming t o the r e q u i r e d standard  THE UNIVERSITY OF BRITISH COLUMBIA A p r i l , 1971  In p r e s e n t i n g t h i s t h e s i s  in p a r t i a l  f u l f i l m e n t o f the r e q u i r e m e n t s  an advanced degree at the U n i v e r s i t y of B r i t i s h C o l u m b i a , I agree the L i b r a r y  s h a l l make i t f r e e l y  available for  I f u r t h e r agree t h a t p e r m i s s i o n f o r e x t e n s i v e  r e f e r e n c e and copying of t h i s  of this thesis for written  It  i s understood  thesis  /~c?>g_rs 7~/g v  The U n i v e r s i t y o f B r i t i s h Columbia Vancouver 8, Canada  Date  /3^s?<+  -2-,,  '97/  or  publication  f i n a n c i a l g a i n s h a l l not be a l l o w e d w i t h o u t my  permission.  Department o f  that c o p y i n g o r  that  study.  f o r s c h o l a r l y purposes may be g r a n t e d by the Head o f my Department by h i s r e p r e s e n t a t i v e s .  for  ABSTRACT  An is  of benefit  mizing tion of  t h e mean a n n u a l  the water  cycle  either  this  balance of forest  who m a n a g e s e c o n d  increment  balance, root  difficult  In  the  to foresters  i s given t o the importance  also  zone  rotation  c a n be b e t t e r o f the water  depths. ance  One c o m p o n e n t  drainage, i s not only  important, but  zone  drainage during  cm.  H,jO w i t h  The was  1 1 . 7 2 mm. -  monitored the s o i l  and measured  a response  time  on Darcy's  water  a two-week  Law.  mm.  with  2.kl  mm./day.  zone  than  was  observed.  water  five  a n e s t i m a t e d maximum e r r o r Comparable  positive  To  root  zone  drying  implement  was d e v e l o p e d at five  minimum  soil mainten-  to within  1.8  seconds.  d r a i n a g e f o r t h e two-week of the daily  drainage derived  by t h e water  a n e s t i m a t e d maximum e r r o r Both  required  of the s o i l  but simultaneous evaluation  9.33  potential  installed,  of less  cumulative root  1.30 mm./day.  dependent  was e a s i l y  the potential  with  i f recogni-  t o measure o r c a l c u l a t e .  study, root  The s y s t e m  Maxi-  balance.  was m o n i t o r e d b y a m e t h o d b a s e d  constantly  ecosystems  stands.  realized  method, a t e n s i o m e t e r - p r e s s u r e t r a n s d u c e r system  which  of  understanding o f t h e water  period  drainage from  b a l a n c e m e t h o d was  of the daily  drainage of -  and n e g a t i v e drainage t o t h e root  The n e g a t i v e d r a i n a g e  (water moving  into  provides  a supplementary  s u p p l y Df w a t e r  to the root  reducing  the possibility  of a soil  deficit  water  Approved:  an i n -  zone  the root  zone,  occurring.  zone)  thereby  Introduction  1  Chapter I - A Tensiometer System for Use in Forest Soils  4  Introduction  4  Description of the System  7  Installation  and Operation  ..10  Response Characteristics  13  Field Trials  16  Conclusion  18  Chapter II - Drainage from the Root Zone of a Douglas Plantation  fir  20  Introduction  20  Theory  22  Experimental Procedure  23  Instrumentation  2k  F i e l d determination of hydraulic conductivity Analysis and Results  25 25  S o i l water characteristics  25  The root zone  26  Drainage calculation by the Darcy Law method Drainage calculated from the water  29  balance equation  31  Discussion and Summary...  34  Conclusion  37  Literature Cited Introduction.  39 .39  Chapter I  39  Chapter II  41  Appendix I S o i l P r o f i l e D e s c r i p t i o n and Photographic D e s c r i p t i o n of the Study S i t e  43  Appendix I I Photographic D e s c r i p t i o n of F i e l d  Instrumentation  44  Appendix I I I Neutron Moisture Meter C a l i b r a t i o n Curve  45  Appendix IV Complete Record of H y d r a u l i c Head and M a t r i c Suction Data f a r F i v e S o i l Depths  46  Appendix V Mean D a i l y H y d r a u l i c Head and M a t r i c S u c t i o n Values f a r F i v e S o i l Depths f a r the Duration of the Study  ..47  Appendix VI The Determination of the H y d r a u l i c Characteristic  Conductivity 4Q  Appendix. VII Computation of Root Zone Drainage Using the Darcy Law Method  .49  Appendix VIII Computation of Root Zone Drainage Using the Water Balance Equation  .....50  Appendix IX Comparison of Root Zone S o i l Water D e p l e t i o n from Measured Values and Values C a l c u l a t e d Using Darcy Law Root Zone Drainage..  51  LIST OF TABLES'  Table I  II  III  Page Operating characteristics of the tensiometer pressure transducer system  .....14  Time response characteristic for five tensiometer-pressure transducer systems  15  Bulk density and stone content values of three soil layers  26  LIST QF FIGURES  Figure  Page  1  Details of tensiometer cup, brass f i t t i n g and hydraulic l i n e unit  2  Schematic diagram of tensiometer-pressure transducer system as i n s t a l l e d in the f i e l d . . . .  11  3  Relationship between hydraulic head at 60 cm. s o i l depth and surface s o i l temperature with time  17  Daily hydraulic head values for the 60 cm. and 90 cm. s o i l depth  19  k  5  6  Water retention curves for the 0 - 6 0 cm. and 60 - 90 cm. s o i l layers of Capilano gravelly sandy loam  9  ..27  Hydraulic conductivity characteristic, of the 60 - 90 cm. layer of Capilano gravelly sandy l o a m . . . .  28  7  Mean daily hydraulic head p r o f i l e s for July 8 to July 22  30  8  Daily evapotranspiration and root zone water storage for the duration of the study  32  Daily root zone drainage as determined from Darcy's Law Method and the water balance method respectively  33  Cumulative evapotranspiration and root zone drainage (Darcy's Law) for the duration of the s t u d y . . .  36  9  10  ACKNOWLEDGEMENTS  Without the help and advice of certain people and agencies, this thesis would not have been possible.  Special thanks are due  Dr. B.C. Goodell, Professor of Forest Hydrology, Faculty of Forestry, University of B r i t i s h Columbia, uho gave valuable guidance at a l l stages of the study and uho arranged much of the required funding (fMRC Grant A-3640).  Special thanks are also extended to Dr. T . A .  Black, Assistant Professor of Biometeorology, Department of Soil Science, University of B r i t i s h Columbia, uho provided many of the ideas uhich formed the basis for this study.  His patient help and  guidance throughout the analytical and writing phases of the project mere invaluable. The cooperation of Mr. J.  Walters, Director of the U.B.C.  Research Forest during the establishment phases of the study was greatly appreciated. To Andre Plamondon and Keith MclMaughton, fellow graduate students,  go my thanks for their help and encouragement during the  f i e l d phase of the study. To my wife Georgina, go my very special thanks for not only her physical help in the f i n a l preparation Df the thesis, but also for her many months of patience and mental support during a l l phases of my graduate career.  DEDICATION  To Dr. Jeffrey, instrumental in the terest in the f i e l d w i l l continue to be out my career.  who i n i t i a t e d , and was development of my i n of Forest Hydrology and an inspiration through-  DEVELOPMENT AND A P P L I C A T I O N OF A TECHNIQUE FOR EVALUATING ROOT ZONE DRAINAGE  Introduction  An understanding of the water balance o f f o r e s t  eco-  systems i s of b e n e f i t t o f o r e s t e r s i n the management of second r o t a t i o n stands.  Maximizing  the mean annual increment  r e a l i z e d i f r e c o g n i t i o n i s given to the importance balance.  of the water  As the e x p l o i t i v e philosophy of the B r i t i s h  F o r e s t Industry g r a d u a l l y g i v e s way to the s c i e n t i f i c of  can be b e t t e r  Columbia management  f o r e s t stands, economically a p p l i c a b l e h y d r o l o g i c data w i l l be  i n high demand.  The water balance of a p l a n t r o o t zone i s expressed by the e q u a t i o n :  P -  G  =  E + D + W /At A  (1)  where P i s the precipitation rate, E i s the rate, D i s the drainage rate,  A  evapotranspiration  l _ / A t i s the rate of change i n stored  mater in the root zone and G i s the surface runoff rate.  The pre-  c i p i t a t i o n , runoff and change in storage are measureable,  but  evapotranspiration and drainage are both d i f f i c u l t either to measure or to calculate.  The calculation of evapotranspiration from some  crops by means of micrometeorological and plant measurements becoming increasingly f e a s i b l e .  Black et a l .  is  (1969) shouied that  drainage from a bare s o i l was related to the average water content of the p r o f i l e and successfully  used t h i s relationship in calculat-  ing p r o f i l e drainage and storage for a three month period.  The  problem of calculating drainage from a s o i l containing a root system i s receiving increasing attention (Gardner, 1964; Rose and Stern,  1967; Van Bavel et a l . ,  1968).  A useful estimate of the  drainage from the root zone in a sandy s o i l supporting a row crop was obtained by Black e t a l . (1970) from the space averaged c a p i l lary conductivity of the s o i l i n which root occurred. Since the evaluation of the water balance of a vegetated s o i l requires knowledge of the energy status of s o i l water, a tensiometer system plays a key role in the : f i e l d ..instrumentation. In Chapter I, described.  a tensiometer system far use in forested  soil  is  Because conditions such as noncontinuous, unsteady  p r e c i p i t a t i o n , unsteady and s p a t i a l l y non-uniform s o i l water flow are unpredictable with respect to time i n forested ecosystems, constant monitoring i s a prime requisite of a tensiometer system.  Of  equal importance i s a small response time, since the energy status of s o i l water can change very rapidly i n the coarse g l a c i a l  soils  t y p i c a l of coastal  B.C. An additional requirement i s that of moni-  toring at a number of depths i n the s o i l and to an acceptable accuracy. In Chapter II,  primary attention i s devoted to the evalu-  ation of root zone drainage during a portion of the growing season of a twenty-year-old Douglas-fir (Pseudotsuga menziesii Mirb. Franco.) plantation.  Drainage rates, D, were calculated over a  two-week period by a method based on Darcy's Law as expressed by the following equation:  D  =  -k (  )  (2)  The Darcy Law method requires continuous monitoring of the hydraulic dH gradients,  (__•), and the measurement of the hydraulic conductivity  characteristic,  k, of the s o i l .  The water balance approach r e l i e s  on measurements of water storage as well as precipitation and evaporation. The Appendices contain ancillary information to that presented i n the text as well as additional data which may be of value to researchers wishing to extend the results presented.  Chapter I  A TENSIOMETER SYSTEM FOR USE IN FOREST SOILS  Introduction  Successful  evaluation of the water balance of forest eco-  systems w i l l only be realized when greater attention i s paid to the understanding and measurement of c r i t i c a l hydrologic processes, notably that of s o i l water drainage into and out of the root zone. spite of i t s importance i n hydrologic modelling of forested  In  water-  sheds and water budgeting for forest growth, root zone drainage studies in forested environments have been sketchy (Brulhart, 1969). In the coarse g l a c i a l s o i l s supporting the commercial forests of coastal B . C . , situations  such as potential growing season drought,  noncontinuous, unsteady p r e c i p i t a t i o n , unsteady and s p a t i a l l y nonuniform s o i l water flow, and hysteresis make the measurement of drainage d i f f i c u l t .  Because these conditions are unpredictable with  time, special attention must be devoted to techniques of measuring the required parameters for the calculation of root zone drainage.  Although  a n a l y t i c a l e x p r e s s i o n s based  upon Darcy's  equa-  t i o n f o r unsaturated s o i l water movement and r e t e n t i o n have been available  (Richards, 1931), r e l a t i v e l y few i n v e s t i g a t o r s have des-  c r i b e d s o i l water behavior through measured values of both lic  hydrau-  c o n d u c t i v i t y and h y d r a u l i c g r a d i e n t s e x h i b i t e d w i t h i n f i e l d  soils.  Recently, N i e l s e n e t a l . (1964);  (1967);  Van Bavel e t a l . (1968); La Rue e t a l . (1968); B i a n c h i  and Tovey, (1968);  Rose e t a l . (1965);  Rice  S t r e b e l e t a l . (197D); and Black e t a l . (1970)  working with bare and vegetated a g r i c u l t u r a l s o i l s ,  r e p o r t e d on  measurements of these parameters and t h e i r use i n the c a l c u l a t i o n of  r o o t zone drainage. A l l of these i n v e s t i g a t o r s , r e c o g n i z i n g the n e c e s s i t y f o r  minimizing p e r t u r b a t i o n of the f i e l d u t i l i z e d ceramic t e n s i o m e t e r s .  s o i l water.system under study,  The measurement of the s o i l water  s u c t i o n detected by the tensiometers i s g e n e r a l l y accomplished by one of two methods.  The most common method, the Hg-manometer, i s  simple, r e l i a b l e and r e l a t i v e l y i n e x p e n s i v e .  I t i s disadvantaged  by the n e c e s s i t y f o r frequent on s i t e readings i n order t o detect a l l major h y d r o l o g i c events, and by i t s e x c e s s i v e thermal ity  (Strebel,  1970), slow response  sensitiv-  time and by the l i m i t e d maximum  s o i l water s u c t i o n measurable.  Recognizing these disadvantages, developed was  Klute and Peters (1962)  another method f o r measuring s o i l water s u c t i o n which  improved upon by Watson (1965).  T h i s method u t i l i z e d a pressure  transducer t o measure s o i l water s u c t i o n , thereby p e r m i t t i n g a f a s t response  time and constant monitoring of s o i l water s u c t i o n . The  dangers of missing sudden hydrologic events such as those caused by a heavy precipitation event and rapid i n f i l t r a t i o n could thus be avoided. Although many investigators  (Black et a l . 1970; Renger  et a l . 1970; and Briilhart, 1970) feel that the Darcy equation, which relates the flux of water in the s o i l to the unsaturated conductivity of the s o i l and the driving force of the t o t a l potential gradient, offers  the greatest potential for measuring root zone  drainage, other methods have been u t i l i z e d .  Fixed basin lysimeters  have been widely used i n water balance studies (Allison e_t a l . 1959; Dreibelbis and McGuinness, 1957; Harrold and Dreibelbis, 1951; and Rich, 1959) in agriculture and forestry research.  The  v a l i d i t y of information derived from these lysimeters has been repeatedly questioned (Caiman, 1946; Richards et a l . 1939; and Ldalliham, 1940), primarily on the grounds that the s o i l - a i r interface  at  the outlet retards normal s o i l drainage and the existance of v e r t i cal side walls imposes r e s t r i c t i o n s on root development. Cole (1958) developed a tension lysimeter for f i e l d studies of drainage which u t i l i z e d alundum f i l t e r discs to permit reasonably rapid flow of water yet possessing sufficient  capillary  tension to preclude the disruption of the tension column up to tensions of 0.2 atmosphere.  However, the disturbance of the s o i l  during lysimeter i n s t a l l a t i o n and the perturbation of the s o i l water flow during operation may cause inaccuracies in r e s u l t s . Perhaps a more serious fault i s that the fixed tension applied to the plate creates the p o s s i b i l i t y of extracting an undue amount of  water during the early stages of the drainage cycle following a major precipitation event (Cole et a l . 1961)..  A further disadvan-  tage of this method i s that only downward drainage can be measured since an increase in s o i l water suction beyond that applied to the plate would cause water to move from the plate into the s o i l . A meter for d i r e c t l y measuring unsaturated s o i l water flow has been b u i l t and tested i n the laboratory by Cary (1970). Although s t i l l in the development stage, this system i s promising because i t i s simple, easy to calibrate and economical. date have shown the meter consistently overestimates  Tests to  unsaturated  flow, p a r t i c u l a r l y in the low suction range. This paper w i l l describe a fast response tensiometer system designed for long term monitoring of s o i l water suction prof i l e s in a forested f i e l d s o i l .  The testing site was a twenty year  old Douglas f i r (Pseudotsuga menziesii Mirb. Franco.) plantation supported by a gravelly sandy loam.  The s o i l i s highly t y p i c a l of  B.C. coastal forested s o i l s and has a conductivity characteristic exhibiting grass extremes with water content.  An example of drain-  age from the root zone as calculated from the recorded data i s given.  Description of the System  The tensiometer-pressure five tensiometer-pressure  transducer system consists of  transducer u n i t s .  Each of the tensio-  meter u n i t s ( F i g u r e 1) c o n s i s t s : of a ceramic cup 0.25"  o.d.,  0.125" i . d . ) cemented to a brass f i t t i n g  with epoxy r e s i n .  Each u n i t i s connected  by h y d r a u l i c l i n e s running through lic of  (1.125" l o n g , (Swagelock)  to a pressure  a brass t e e - j o i n t .  transducer A l l hydrau-  l i n e s are Q.125" bore p o l y e t h y l e n e tubing having the advantages flexibility  and easy d e t e c t i o n of entrapped  air.  The  tee-joint  system ( F i g u r e 1) enables the i n s e r t i o n of s p a g h e t t i tubing uhich -2 i s connected  to a 10 l b . i n .  p r e s s u r i z e d water supply p e r m i t t i n g  r a p i d and e f f i c i e n t d e - a i r i n g of the tensiometer cup and h y d r a u l i c line. Each of the h y d r a u l i c l i n e s from the t e e - j o i n t to the tensiometer cup i s cut to a l e n g t h corresponding to the s o i l at  depth  which the s o i l water s u c t i o n i s to be measured. The pressure t r a n s d u c e r s ( C o n s o l i d a t e d Electrodynamics  Co. Pressure Transducer  Type 4-312) have a range of 0 to -  12.5  _2 lbs. of  in.  and f e a t u r e a s m a l l d e f l e c t i o n diaphragm.  t h i s diaphragm i s measured by a f u l l y  i n the form of f o u r - a c t i v e - a r m s  The  deflection  banded s t r a i n gauge b r i d g e  to provide an output t h a t i s a  l i n e a r f u n c t i o n of the magnitude of the pressure a p p l i e d to the diaphragm.  The  sensitivity  of the t r a n s d u c e r s i s 0.012  mv/cm.  H^O  with 5v d-c a p p l i e d to the b r i d g e . Although  the t r a n s d u c e r s are temperature  a range of -65°F. to +250°F., a thermal s e n s i t i v i t y f u l l range/ °F. meant that the temperature 10 F. D  compensated s h i f t of  a g a i n s t s i g n i f i c a n t temperature  0.01%  range c o u l d only be  i n order to measure the h y d r a u l i c head to w i t h i n 2 cm.  To ensure  over  H-,0.  e f f e c t s the transducers  removable cap f a r s p a g h e t t i i n s e r t i o n to d e - a i r system  Wiiiiiik  I-  §1  r.  brass t e e - j o i n t to pressure transducer  1  1  __Lr  hydraulic  brass  I  line  fitting  r ceramic cup  Figure  1.  D e t a i l s of tensiometer cup, brass f i t t i n g and h y d r a u l i c l i n e u n i t .  were mounted i n a thermally regulated aluminum chassis box i n s u l a t ed with 8 cm. of styrofoam.  The box was maintained above ambient  temperatures at 37 i 0.05 a C. by a heating element consisting of four carbon resistors (10 ohm, 2 watt) in series controlled by a thermaregulator (Sargent-Welch).  This box was carefully water-  proofed and located on the s o i l surface 30 cm. from where the hydraulic lines to the tsnsiometer cups were inserted into the s o i l . The input voltage of 5v d-c was supplied from a 110v a-c power unit supply (Endevco Model 4230) with l i n e regulation of •.01% of the output setting.  The thermoregulator and power supply  units were housed in a small weatherproof box, situated 3 m. from the transducer box. The output signal from each transducer was relayed through a timed, gold contact stepping switch (Clare) to a s t r i p chart recorder (Esterline Angus Model T 171 B) having power requirements of 110v a-c or 9v d-c.  The timed switch and recorder  were housed in an instrument shed 20 m. from the transducer box. A" schematic diagram of the entire system i s  presented  in Figure 2.  Installation and Operation  The tensiometers were positioned by driving a s o l i d steel rod into the s o i l to each of the five desired depths.  The  occurrence of stones and discontinuous cementation made t h i s a  suction signal  recorder  timed relay switch  11Dv ar-c  power supply  5v d-c  thermoregulator  power control  transducer box  tensiometers  Figure 2.  Schematic diagram of tensiometer-pressure transducer system.as i n s t a l l e d in the f i e l d .  difficult  j o b in the particular site studied.  The tensiometer  cups were pushed into position by means of the connected hydraulic lines and the holes were b a c k f i l l e d . A l l cups and hydraulic lines were then thoroughly deaired by inserting spaghetti  tubing and flushing de-aired water  through the system with a small e l e c t r i c pump o p e r a t i n g at 10 l b s . inT  2  Following the de-airing the tee-joint was capped, the hydraulic lines leading to the transducer box were covered with 5 cm. of s o i l and the system was l e f t to e q u i l i b r a t e .  Equilibrium  t i m e was approximately 30 minutes. The operational system required a minimum of maintenance. Although the s o i l water suction never exceeded the a i r intrusion . value of the ceramic cups, slow diffusion of the a i r into the cup necessitated periodic de-airing of t h e cups and hydraulic l i n e s . During eight weeks of operation, de-airing was required only four times. The recorder required only periodic maintenance including f i l l i n g the ink reservoir and changing the chart paper r o l l s .  To  ensure a resolution of at least 2 cm. H^O, the f u l l scale deflection of the recorder was maintained at 5 mv to permit readings from the 15 cm. wide s t r i p chart to the nearest Q.Q2 mv.  This was com-  plicated somewhat by the changing s o i l water suction and the d i f f e r ent zero offsets inherent in each of the  transducers.  Response Characteristics  Richards (1949), defined the general operating characteristics a.  of tensiometer-pressure  transducer systems as:  Cup conductance, K i s the volume of water passing through the cup wall per unit of time per unit of pressure difference and has the dimensions cc/sec/ psi. For a given time and pressure difference the cup conductance depends primarily on the area of the ceramic in contact with the s o i l and the pore size of the ceramic material. Air intrusion value i s the pressure difference required to cause an a i r leak when the cup wall i s saturated with water. In designing an experiment, a ceramic should be chosen so that i t s a i r i n t r u sion value i s greater than the maximum suction expected in the experiment.  c.  Gauge s e n s i t i v i t y , S i s described as the transducer s e n s i t i v i t y . It i s the pressure change per unit volume displacement of. the diaphragm with units of p s i / c c .  d.  Response time constant, R=(KS) i s a measure of the tensiometer-pressure transducer system response time to the s o i l water suction changes at the cup surface. It has the dimensions of time and i s dependent upon the cup conductance and the transducer s e n s i t i v i t y .  _1  Far the. measurement of rapidly changing suctions i t necessary  t D have a response time as small as passible.  is  The strain  gauge type pressure transducer has excellent volume displacementpressure characteristics  and accordingly f a c i l i t a t e s  a system with  a small response time. Table I' summarizes the mean operating characteristics of the tensiometer-pressure specifications  transducer system as based on manufacturers'  and the above equation for R.  Table I.  Air Intrusion cm. of H-0  1000  Operating characteristics of the tensiometer-pressure transducer system.  Cup Conductance K cc/sec/psi  Sensitivity S psi/cc  1.454 x 10"  1.28 x 10 *  3  •equivalent to 1.1 x 10  2  cmVcm  -i|  Response Time R sec  5.38  H-0  As a check on the reliability of the response time as calculated from manufacturers' supplied data, values Df R specific for a given tensiometer cup and associated transducer and for different percentages of time to equilibrium may be obtained through the use of the following equation (Watson, 1965):  Y.  t  where Y  o  =  T  o  (  1 - e~  t / R  )  (3)  i s the suction at the external surface of the cup, Y. i s t  the suction at the transducer diaphragm, t i s the measured time in seconds and R is the calculated response time in.seconds. By using the recorder output from the system, the time response characteristic for a step input of 90 cm. suction from an i n i t i a l suction of 0 cm. for each of five tensiometer-pressure transducer systems can be evaluated in Table II.  Table II.  Time response characteristics for five tensiometer-pressure transducer systems.  Tensiometerpressure transducer ^ . system  R  R  R  R  sec.  sec.  sec.  sec.  A  1.52  5.27  6.67  7.79  B  1.32  4.08  9.16  8.10  C  0.76  5.01  5.34  6.52  D  2.42  7.11  6.26  8.24  E  1.46  7.12  7.98  9.82  •percentage of t o t a l time to equilibrium  The deviations of the time constants i n Table II from those in Table I emphasize the importance of determining the time response for the specific equipment assemblies i n operational status.  Any deviations in H and S are expressed in the R values  of Table I but not of Table II.  Because a small time (0..25 R  0.50 sec.)  i s necessary to apply the step input, the  0.90  are  more r e l i a b l e . Knowledge of the time response allows for the adjustment of the timing of the relay switch (relaying thB transducer  signal  to the recorder) to remain on each transducer channel long enough (5 min.) to permit the recording of an average equilibrium s o i l water suction.  Prior to i n s t a l l i n g the tensiometer-pressure system in the f i e l d ,  transducer  each of the five units mas calibrated in the  laboratory. . A forty gallon vacuum source was used to apply various suctions to the transducers.  Manometric maasurements of the a p p l i -  ed suction were platted against the corresponding m i l l i v o l t output. The relationship was linear to the maximum applied suction of 800 cm. of hi^O and the average standard error of the estimate for the five tensiometer-pressure  transducer units i s - 1.8 cm. Df H 9 0.  Field Trials  The system provided continual measurements of the hydraulic head profile for a test period of eight weeks.  During this period  the zero s t a b i l i t y of each of the tensiometer-pressure  transducer  units was checked during the de-airing operation by checking the transducer output of the open system.  f\lo measurable zero shift was  detected over the eight week period. Although potential errors due to thermal effects on the transducers were eliminated by the thermally regulated box, errors due to thermal expansion and contraction of the hydraulic lines near the s o i l surface were possible.  Figure 3, however, suggests  that adverse thermal effects were prevented by the covering of the hydraulic lines with forest the forest  l i t t e r and the law radiation loads on  floor. Sample traces of the hydraulic head changes based on  T  1  1  1  TIME  Figure 3.  1  1  OF  1  DAY  1  1  1  r  (HRS.)  Relationship between hydraulic head at 60 cm., s a i l depth and surface s o i l temperature with time.  daily averages of half hourly values through a drying cycle at two s o i l depths (SO and 90 cm.) are presented in Figure k. This hydraul i c p r o f i l e can be used i n many ways in s o i l water studies in the field, a.  b.  c.  for example: Given the hydraulic p r o f i l e and the daily s o i l water content, the hydraulic conductivity characteristic can be developed. Given the hydraulic p r o f i l e and the hydraulic conduc• t i v i t y , the magnitude and direction of drainage from the root zone can be calculated. Given the hydraulic p r o f i l e the detection of wetting fronts and their rate of movement i s made possible.  Conclusion  A fast response f i e l d tensiometer system was developed which provides an accurate and continual quantitative assessment of the hydraulic head p r o f i l e i n the s o i l .  The system described was  tested in the f i e l d for eight weeks and was limited only by the fact that i t operates at suctions less than one bar.  Recent de-  velopments (Brown, 1970; Rawlins et a l . 1968; Richards and Ogata, 1958) indicate measurements of suctions greater than one bar can be s a t i s f a c t o r i l y  measured by the thermocouple psychrometer.  1 6  9  lO II 12 13 14 15 l€> M TIME  Figure 4.  C  J  U  L  18 V  19 2 0 2 l 22.  DAYS)  Daily hydraulic head values for the 60 cm. and 90 cm. s o i l depth.  Chapter II  DRAINAGE FROM THE ROOT ZONE OF A. DOUGLAS FIR PLANTATION  Introduction  The importance of drainage and evapotranspiration from the root zone of forested s o i l s needs to be stressed.  Within the  context of the water balance several important aspects are evident, especially with respect to root zone drainage.  When drainage i s  positive, water moves out of the root zone and a loss of stored water accrues.  This may lead to a shortage of water i n .the root  zone t D supply the evapotranspiration demand and a consequent physiological stress within the tree.  If drainage i s negative,  water moves upward to supplement the stored water in the root zone. This added supply of water to the root zone s a t i s f i e s the evapotranspiration demand and contributes to s i t e quality.  The drainage  characteristic of the root zone may also be important i n terms of the supply of nutrients to plant roots since water i s the transporting medium.  Drainage has a significant effect on watershed behavior. A positive drainage may be an important contribution to streamflaw and, s i m i l a r l y , a negative drainage may contribute to a lowering of streamflow. Thus, to the managing forester,  both the magnitude and  direction of drainage are necessary i n the evaluation of the water balance which i n turn w i l l be of increasing importance to decision making i n second growth forest management.  The types of decisions  which may be involved are those related to species s u i t a b i l i t y , establishment methods, pre-commercial spacing, thinning, amount and timing of nutrient application and the potential of i r r i g a t i o n . At present, these decisions are being made on the basis of very l i m i t ed data. The f i r s t objective of this paper i B to compare drainage as calculated from the Darcy's Law method to that calculated from the water balance equation method.  The second abjective i s to  assess the importance of drainage from the root zone of a Douglas f i r plantation supported by a gravelly sandy loam.  The third  objective i s to assess the p r a c t i c a b i l i t y of making the measurements necessary to calculate root zone drainage and the u t i l i z a t i o n of this data in the management of second growth forest  stands.  An approach toward the f i r s t objective was made possible by a separate, but contemporaneous study (Black and MclMaughton, 1971) that made use of a micrometeorological method for the evaluation of evapotranspiration.  Theory  An assessment of root zone drainage rate (mm./day) can be accomplished by at least two methods.  One method i s from the water  balance equation:  D  (4)  = • B' - G - E ^til/At  By measuring precipitation rate, P, surface runoff rate, G, evapotranspiration rate, E, and rate of change of root zone soil water storage, UJ/ t, the drainage rate, D, may be calculated. A  A  The other method makes use of the relationship expressed by Darcy's Law for one-dimensional, isothermal, vertical flow of water, considered here as the drainage rate from the root zone.  D  = -k ( ||)  (5)  where H (cm. of H-0) i s the hydraulic head at depth _ (cm.) and i s given by H = -T - _, where T (cm. of H^O) i s the matric suction and the depth i s positive downward and is measured from the soil surface. dH Thus, the term -j-- is the driving force or hydraulic gradient.  The  hydraulic conductivity, k ..(mm./day), i s a characteristic of the soil which expresses i t s ability to transmit water.  This ability i s  strongly dependent on the water content, B, of the s o i l .  The f i e l d determination of the hydraulic conductivity can be accomplished by u t i l i z i n g aspects of the work of Rose and Stern (1965).  By substituting  (5) into (4) and expressing  in  integral form of the s o i l water profile and neglecting P and G, an expression for the rate of depletion of water tD the lower l i m i t of the root zone-where _ = L i s given as follows:  (  _ dt ) dZ  1  =  (6)  * d_l  Solving (6) for the hydraulic conductivity, k, at depth L, i f E i s zero, results i n :  j k  =  \L  , dB (7)  I dHI ld_l.  Experimental Procedure  The experiment was conducted between July 7 and July 22, 1970 at the University of B r i t i s h Columbia Research Forest near Haney, B.C.  The s o i l was a Capilano gravelly sandy loam develop-  ed on an outwash terrace overlying a glaciomarine  deposit.  Following the tractor logging of the area in 1957, the s i t e was cleared by p i l i n g and burning.  In 1959, the area was  planted to 2-0 Dauglas f i r an an 8x8 foot spacing.  At the time of  the experiment, the crowns had' just closed and the average canopy height was 20 feet.  Instrumentation The energy status of the s o i l water at the study site was monitored continuously by the tensiometer-pressure described in Chapter I.  transducer system  Measurements were recorded on a 15 cm. wide  strip-chart recorder every 30 minutes ar five depths of 30, 60, 90, 120, and 150 cm. i n the s o i l .  S o i l water storage was monitored from  four access tubes i n s t a l l e d around the tensiometer cups by p r e - d r i l l ing holes with a portable power auger, driving the access tubes and b a c k f i l l i n g to prevent precipitation inwashing.  The neutron moisture  meter (Troxler) was f i e l d calibrated according to the method developed by Rawitz (1969) of simultaneous neutron and gravimetric sampling.  The c a l i b r a t i o n curve yielded a standard error of the e s t i -  mate of volumetric water content of - 0.003 cm."3/ cm."5 and an r 2 of 0.91.  Readings were taken at a l l five depths as close as possi-  ble to a daily schedule.  Gravimetric samples were also taken but,  in the stony s o i l the r e l a t i v e l y greater degree of s p a t i a l  integra-  tion accomplished by the neutron moisture meter rendered the l a t t e r determinations preferable  (Van Bavel e_t a l . 1963).  was measured d a i l y , when necessary,  I\!et precipitation  by means of a standard Canadian  Meteorological rain gauge. The companion study of daily evapotranspiration measurement using the energy balance approach, and referred to i n the  introduction of t h i s chapter, was conducted, on the same s i t e .  F i e l d determination Df hydraulic conductivity In order to evaluate k in accordance with the theory developed by Rose and Stern (1965), a k5 gallon o i l drum with both ends removed was pushed into the s o i l to a depth of 80 centimeters. This yielded a cylinder of undisturbed s o i l isolated from the surrounding s o i l and thereby free of the effects of both l a t e r a l flow and root extraction Df s o i l water.  A neutron moisture meter access  tube was driven into the center of the s o i l column.  Hydraulic heads  at depths of 30, 45, 60 and 75 cm. were monitored for three weeks using a similar tensiometer-pressure cribed i n Chapter I.  transducer system to that des-  At the start of the experiment the s o i l column  was saturated and then covered with p l a s t i c sheeting to prevent evaporation.  Changes i n water content were monitored at the same  four depths by the neutron moisture meter for the three week duration of.the experiment. At the end of the experiment the hydraulic conductivity characteristics of the s o i l were determined by (7).  Analysis and Results  S o i l water characteristics The s o i l p r o f i l e i s t y p i f i e d by three d i s t i n c t layers, 0 to 60 centimeters, 60 to 90 centimeters and 90 to 150 c e n t i -  meters, each with differing physical properties that affect mater behavior.  soil  The bulk density and stone content evaluated i n the  laboratory from s o i l core samples are compared in Table III.  Water  retention curves mere developed from the same s o i l cores i n the lab for the 0 to 60 cm. (root zone) and 60 to 90 cm. (drainage zone) s o i l layers and are presented in Figure 5.  The hydraulic conduc-  t i v i t y characteristic of the 60 to 90 cm. s o i l layer, as determined from f i e l d data, i s presented in Figure 6.  As can be seen from  Figures 5 and 6, both the suctions and conductivities change by several orders of magnitude over a narrow range of water content due to the coarse texture of the s o i l .  Table III.  Physical S o i l Property  Bulk density and stone content values" of three s o i l layers.  0-60  cm.  S o i l Layer 60 - 90 cm.  90 - 120 cm.  - mean values and ranges Bulk density (gm/cm^) Stone content , 3. 3. (cm /cm )  0.84 i 0.06  1.47 i 0.03  1.61 - 0.05  0.20 i 0.02  0.23 - 0.05  0.42 * 0.08  The root zone Any rigorous method of calculating drainage requires an accurate measurement of the root zone depth.  In the experimental  O.fol  1  1  1  I  1  1  1  1  >  1  I  1  1  1  I  I  I  r  o  1  O  I  ZO AO GO  80  IOO 120  TENSION  Figure 5.  1  I  140 l&O 180 200  (CM.H2 ) 0  Water retention curves for the 0 - 6 0 cm. and 60 - 90 cm. s o i l layers of Capilano gravelly sandy loam.  Figure 6.  Hydraulic conductivity characteristic of the 50-90 cm. layer of Capilano gravelly sandy loam.  site,  the i n c r e a s i n g bulk d e n s i t y below 60 centimeters  of  soil  depth formed a- b a r r i e r to the downward p r o g r e s s i o n of r o o t s .  This  f a c t o r i n c o n j u n c t i o n with a root d e n s i t y a n a l y s i s suggested  a maxi-  mum  r o o t i n g depth of 75 centimeters, which f o r the most p a r t , i n -  cluded a 15 centimeter  s a f e t y margin.  between 30 and 60 centimeter  Maximum r o o t d e n s i t y occurred  depth.  Drainage c a l c u l a t i o n by the Darcy Law  method  D a i l y values of r o o t zone drainage, 75 centimeters were c a l c u l a t e d by equation of  D, at depth,  (5).  of  Mean d a i l y  values  k are obtained from Figure 6 using the mean d a i l y value of T at  _ = 75 cm.  which i s the average of T at _ = 60 cm.  and  _ = 90  cm.  dH Appropriate  values of the h y d r a u l i c g r a d i e n t ,  -JT=- , were taken  the d a i l y h y d r a u l i c head p r o f i l e s shown i n Figure 7 with r e f e r e n c e to p r o f i l e centimeter  soil The  from  specific  segments bounded by the 60 centimeter  and  90  depths.  daily profiles,  developed  from the averaged 30 minute  h y d r a u l i c head values, r e q u i r e some e x p l a n a t i o n .  The  most n o t i c e -  able aspect of the p r o f i l e s i s that i n the upper s o i l l a y e r s the change of h y d r a u l i c head with time i n c r e a s e s g r e a t l y during  the  p e r i o d of o b s e r v a t i o n s ; while i n the lower l a y e r s the change over time i s s m a l l .  The  d i f f e r e n c e i s e x p l a i n e d by the  evapotranspira-  t i o n draught from the r o o t zone and  the e x i s t a n c e of a ground-  water t a b l e below 120 c e n t i m e t e r s .  As shown i n F i g u r e 9,  J u l y 8 and drainage  between  J u l y 13 the h y d r a u l i c g r a d i e n t produced a p o s i t i v e  or a l o s s of water from the root zone.  Following  the  Figure 7.  Mean daily hydraulic head profiles for July 8 to July 22.  naarly zero gradient between I = 60 to 90 cm. on July 14, the hydraulic gradient was such as to cause a negative drainage or a gain of water to the root zone from the groundwater  table.  Drainage calculated from the water balance equation The calculation of drainage by the water balance equation (4) required daily measurements of net precipitation (zero for the duration of the experiment), evapotranspiration, root zone s o i l water storage.  and the change i n  Surface runoff i s t y p i c a l l y zero for  most undisturbed forested areas in coastal  B.C. (Idillington, 1969).  The results of the separate evaluation of daily evapotranspiration by means of the energy balance method are shown i n Figure 8.  The r e l i a b i l i t y and accuracy of this data has been  judged to be within - 5% by Black and McNaughton (1971). The daily change i n water storage as measured by the neutron moisture meter and gravimetric sampling for the 0 to 75 centimeter root zone for the duration of the study i s also shown in Figure 8. From daily values of the evapotranspiration and of change in s o i l water storage, the daily drainage from the root zone can be calculated for comparison with values obtained by the Darcy Law method.  Such a comparison i s shown in Figure 9. A further comparison of the values of daily drainage  rates i s through a regression of one on the other.  The regression  F i g u r e B.  D a i l y e v a p o t r a n s p i r a t i o n and root zone mater storage f o r the d u r a t i o n of the study.  8  T  5 O  I  1  i  i  .VDRAII^A&E  T"  "I  BY WATER  T  1  1  T  BALANCE  "T  -r  KA-THOO  _  _ V^RAmAGiE  CD <  BY  DARCY  LAW  METHOD  <  C_ D > _J  /  \  <  _l  T  S  9  I  1_  IO  II  _l 12  13  IME  Figure 9.  14  15  (JULY  Ifo  n  L.  18  19  2 0  21  2 2  DAYS)  Daily root zone drainage as determined from Darcy's Law method and the water balance method respectively.  equation  i s o f t h e f o l l o w i n g form:  CD  This  . water  equation,  estimate  . . ) balance  based  =  0.32  and an r  Discussion  values  of daily  obvious error ful  reasonable  i n interpreting  Errors Darcy  Law method  ductivity the  mately  Darcy  deviations are visable.  i n the daily arise  o f these  drainage  values  i n the determination  root  zone  An  i s help-  deviations.  c a l c u l a t e d by t h e  of the hydraulic  con-  Errors i n the determination of  - 5% a n d f o r t h e l a t t e r  e r r o r o f - 20% w h i c h  are approxi-  represents  e r r o r o f - 1.30 mm./day i n t h e d r a i n a g e  a  maximum  c a l c u l a t e d by t h e  Law m e t h o d .  calculated  the period  by t h e w a t e r  t h e change  Errors  the significance  are approximately  For  of  term  derived  by r e g r e s s i o n , i s n o t a s  methods o f c a l c u l a t i n g  i 15% f o r a t o t a l  absolute  short  e r r o r o fthe  a n d Summary  and h y d r a u l i c gradient.  former  has a standard  (8)  o f 0.93.  as revealed  9 where  a n a l y s i s o f both  _ . .. • ) Dn a r c y ' s L a w  agreement i n t h e independently  drainage,  i n Figure  (D  1.20  o n 15 o b s e r v a t i o n s ,  o f - 0 . 7 6 mm./day  The  +  i n root  of the study, balance  zone  i n the determination  soil  method water  errors i n the daily arise storage  of the former  drainage  i n the determination and e v a p o t r a n s p i r a t i o n .  are approximately  - 2.25  mm./day and for the l a t t e r are approximately - 5% or a maximum of - 0.22 mm./day for a t o t a l maximum error of - 2.47 mm./day i n the drainage calculated by the water balance method. In both methods, the major error source i s that of root zone s o i l water storage determination which can only be measured to within - 2.25 mm. with the neutron moisture meter since the c a l i bration curve has a standard error of the estimate of - 0.003 mm. The depletion of root zone s o i l water storage used in the calculation of the hydraulic conductivity for the Darcy Law drainage c a l culation method i s more r e l i a b l e than that used in the water balance drainage calculation method since neutron observations were made for the former at three depths i n the root zone but only two depths for the l a t t e r . Based on t h i s and the preceding error analysis, drainage values calculated from the Darcy Law method are  the daily 1  more re-  l i a b l e than those calculated from the water balance method.  It  would seem, moreover, that since the measurement of s o i l water storage i n stony s o i l s i s a problem requiring more research (Reinhart,  1961), the more desirable approach to the assessment of the  water balance i s one that does not require continuous monitoring of root zone s a i l water storage. Figure 10 i s an interesting summary in that the rate of evapotranspiration accumulation i s nearly constant with time from July 8 to July 22, despite the decrease i n root zone s o i l water storage (Figure 8).  This apparent contradiction i s explained by  -Or  55 50h  2  A5[  _ 1  4<4  r-  a  35-  0 Ui  >  3o  E-VAPOTRANSPlftATIOrl  25  _l D  _  D  o  ;ROOr  ZONE  D R A I W A C . E COAWCYS  Uw)  •5  J  8  9  L JO  II  12  JL  J  (3  14  T I M E  L 15  ( - J U L Y  l_  _L  J  L  IT  18  19  J  20  2.1  L  22  D A Y S )  Figure 10. Cumulative evapotranspiration and root zone drainage (Darcy's Law) for the duration of the; study.  the cumulative root zone drainage curve which shows a decreasing accumulation of positive drainage u n t i l July 14 when an increasing accumulation of negative drainage begins.  Thus, through a flow of  water into the root zone from the s o i l water reservoir below the root zone, the evapotranspiration function of the plantation could continue unimpeded.  This explains the importance of knowing both  the rate and direction of root zone drainage,, in interpreting the water balance of vegetated  ecosystems.  A further consequence of the existence of negative drainage i s that i t voids the application of the model of Black et a l . (1970) which relates drainage to the average water content Df the root zone.  The data presented in this paper emphasizes the im-  portance of the direction and magnitude of the driving force as i t effects the water balance of the root zone.  It i s  possible,  for example, that at the same root zone s o i l water content and similar hydraulic conductivity, a wide range of drainage rates either positive or negative drainage rates can occur depending on the direction and magnitude of the hydraulic gradient.  Conclusion  Several conclusions can be drawn from this study. f i r s t of these i s that i n stony, forested s o i l s ,  The  root zone drain-  age calculated from Darcy's Law i s more r e l i a b l e than root zone drainage calculated by the water balance equation.  This i s primar-  i l y due to the fact that the Darcy Law method requires only a  monitoring of thB s o i l water energy s t a t u s at two depths across the lower l i m i t of the root zone and a r e l i a b l e hydraulic conductivity c h a r a c t e r i s t i c , determined i n s i t u , for the s o i l .  This  method i s p r a c t i c a l in that i t s simplicity permits operation by a technician.  The water balance method i s more complex and requires  the monitoring of s o i l water storage with i t s inherent inaccuracies when applied to stony s o i l s . With the discovery of the existence of both positive and negative drainage in the s i t e studied, the importance of root zone drainage to the managing forester becomes evident.  If the s a i l  water storage of the root zone of a s i t e can be supplemented by negative drainage, the p o s s i b i l i t y of a s o i l water d e f i c i t occurring i s reduced.  The s i t e can thus be expected to be of higher  quality than might otherwise have been appraised. The value of drainage data in forest management can be easily recognized, but the p r a c t i c a b i l i t y of c o l l e c t i n g such data i s necessarily contingent upon economic considerations of the management function.  LITERATURE CITED  Introduction BLACK, T . A . , LJ.R.GARDNER and G.LU. THURTELL. 1969. The prediction of evaporation, drainage and s o i l water storage for a bare s o i l . S o i l S c i . Soc. Amer. Proc. 33:655-660. , W.R. GARDNER and C.B. TANNER. 1970. Water storage and drainage under a row crop on a sandy s o i l . Agron Jour. 62:48-51. GARDNER, W.R. 1964. Relation of root distribution to water uptake and a v a i l a b i l i t y . Agron. Jour. 56:41-45. ROSE, C.W. and W.R. STERN. 1967. Determination of withdrawal of water from s o i l by crop roots as a function of depth and time. Aust. Jour. S o i l Res. 5:11-19. VAN BAVEL, C.H.M., K.J. BRUST and G.B. STIRK. 1968. Hydraulic properties of a clay loam s o i l and the f i e l d measurement of water uptake by roots. II. The water balance of the root zone. S o i l S c i . Soc. Amer. Proc. 32:317-321.  Chapter I ALLISON, F . E . , E.M. ROLLER and J.E.. ADAMS. 1959. Soil f e r t i l i t y studies in lysimeters containing Lakeland sand. U.S.D.A. Tech. B u l l . 1199. BIANCHI, W.C. and R. TOVEY. 1968. Continuous monitoring of s o i l moisture tension p r o f i l e s . A . S . E . A . Transactions 11: 441-447. BLACK, T.W., W.R. GARDNER and C.B. TANNER. 1970. Water storage and drainage under a row crop Dn a sandy s o i l . Soil Sci. Soc. Amer. Proc. 62:48-51. BROWN, R.W. 1970. Measurement of water potential with thermocouple psychrometers: construction and applications. U.S.D.A. For. Ser. Intermountain For. and Range Exp. Sta. Res. Pap. INT-80 27pp. BRULHART, von A. 1969. Jahreszeitliche veranderungen der wasserbindung und der wasserbewegung in waldbb'den des schweizerischen Mittellandes. Schweizerische Anstalt fur das Forstliche Versuchswesen Mitteilungen. 45(2) 232 pp.  CARY, J.UJ.  1970. Measuring unsaturated s o i l moisture flow with a meter. S o i l S c i . Soc. Amer. Proc. 34:24-27.  COLE, D.W. 1958. 296.  Alundum tension lysimeter.  Soil Sci.  85:293-  , S.P. GESSEL and E . E . HELD. 1961. Tension lysimeter studies of ion and moisture movement in g l a c i a l t i l l and coral a t o l l s o i l s . S o i l S c i . Soc. Amer. Proc. 25:321-325. COLEMAN, E.A.. 1946. A laboratory study of lysimeter drainage under controlled s o i l moisture tension. Soil S c i . 62:365-382. DREIBELBIS, F.R. and J . L . McGUIIMNESS. 1957. Plant nutrient losses in lysimeter percolates. Agron. Jour. 49:523-527. HARROLD, L . L - and F.R. DREIBELBIS. 1951. Agricultural hydrology as evaluated by monolith lysimeters. U.S.D.A. Tech. B u l l . 1050. KLUTE, A. and D.B.. PETERS. 1962. A recording tensiometer with a short response time. S o i l S c i . Soc. Amer. Proc. 26:8788. LA RUE, M . E . , D.R. NIELSEN and R.M.. HA GEN. 1968. S o i l water flux below a ryegrass root zone. Agron.Jour. 60:625-629. NIELSEN, D.R., J.M. DAVIDSON, J.ld. BIGGAR and R.J. MILLER. 1964. Water movement through Panache clay loam. Hilgardia. 35:491-506. RAWLINS, S . L . , W.R. GARDNER and F.N. DALTON. 1968. In situ measurement of s o i l and plant leaf water p o t e n t i a l . S c i . Soc. Amer. Proc. 32:468-470.  Soil  RENGER, M . , W. GIESEL, 0. STREBEL and S. LORCH. 1970. Erste ergebnisse zur quantitativen erfassung der wasserhausehaltskomponenten in der ungesattigen bodenzone. _ e i t s c h r i f t fiir Pflanzenernahrung und Bodenhunde. 126(1):15-34. RICE, R.  1967. A fast-response f i e l d tensiometer system. Transactions. 10:430-438.  A.S.E.A.  RICH, L.R.  1959. Hydrologic research using lysimeters of undisturbed s o i l blacks. Symp. Hannaversch Muden. Lysimeters. 49:139-145.  RICHARDS, L . A . 1931. Capillary conduction of l i q u i d s through porous mediums. Physics. (1):318-333. . 1949. Methods of measuring s o i l moisture tension. Soil S c i . 68:95-112.  , O.R.. NEAL and M.B. RUSSELL. 1939. Observations on moisture conditions in lysimeters; II. Soil S c i . Soc. Amer. Proc. 4:55-59. , and G. OGATA. 1958. Thermocouple for vapor pressure measurements i n b i o l o g i c a l and s o i l systems at high humid.ity. Science. 128:1089-1090. ROSE, C U . , U.R. STERN and J . E . DRUMMOiMD. 1965. Determination of hydraulic conductivity as a function of depth and water content for s o i l in s i t u . Aust. Oour. S o i l Res. 3:1-9. STREBEL, 0. 1970. Messung der bodenwasserspannumg mit Hg-manometertensiomern bei lufttemperaturen unter 0 ° C. _eits c h r i f t fur Pflanzenernahrung und Bodenkunde. 126(2): 111-116. , U.R. GIESEL, M. REftlGER and S. LORCH. 1970. Automatische registrierung der bodenwasserspannung im gelande mit druckauf nehmertensiometer. _ e i t s c h r i f t fiir Pf lanzenernahrung und Bodenkunde. 126 (1):15-32. VAN BAVEL, C.H.M., G.B. STIRK and H.J. BRUST. 1968. Hydraulic properties of a clay loam and the f i e l d measurement of water uptake by roots. I - III. S o i l S c i . Soc. Amer. Proc. 32:310-326. UALLIHAM, E . F . 1940. Soc. Agron.  An improvement in lysimeter design. 32:395-404.  J. Amer.  UATSON, K.K. 1965. Some operating characteristics of a rapid response tensiometer system. Uater Resource Res. 1(4):577586.  Chapter II BLACK, T.A.., U.R. GARDNER and C.B. TANNER. 1970. Uater storage and drainage under a row crap an a sandy s o i l . Agron. Jour. 62:48-51. , and H.G. McNAUGHTON. 1971. Average Bowen ratio methods of calculating evapotranspiration applied to a Douglas f i r forest. Boundary-Layer Meteor. 2:: i n press RAUITZ, E .  1969. Installation and f i e l d c a l i b r a t i o n of neutronscatter equipment for hydrologic research in heterogeneous and stony s a i l s . Uater Resource Res. 5:519-523.  REINHART,  K.G. 1961. The problem of stones i n soil-moisture measurement. S o i l S c i . Soc. Amer. Proc. 25:268-270.  ROSE,  W.R. STERN and J . E . DRUMMOND. 1965. Determination of hydraulic conductivity as a function of depth and water content for s o i l i n s i t u . Aust. Jour. S o i l Res. 3:1-9.  C.UJ.,  VAN BAVEL, C.H.M., P.R. NIXON and V . L . HAUSER. 1963. S o i l moisture measurement with the neutron method. U.S.D.A. ARS 41-70. WILLIIMGTON, R.P. 1969. and skidroads coarse g l a c i a l M.Sc. Thesis.  Some effects of slashburning, clearcutting on the physical-hydrologic properties of s o i l s i n coastal B r i t i s h Columbia. Unpub. University of B r i t i s h Columbia. 149 pp.  APPENDIX  Soil Frofile  I  Description  and Photographic D e s c r i p t i o n  of Study  Site  SOIL. PROFILE DESCRIPTION Capilano Gravelly Sandy Loam  coniferous and deciduous debris i n t e r mixed with a dense moss cover 2 - 1 0 cm. of f e l t y , p a r t i a l l y decomposed debris with moderate levels of fungal hyphae 2-5  Ae  0-5  cm.  Bfh  5 - 30 cm.  cm. of granular,  dark humus  10 YR k/Z dark greyish brown, sandy loam weak subangular blocky, non-sticky, nonp l a s t i c , f r i a b l e , many roots with a gradual lower boundary 10 YR k/U dark yellowish brown, sandy loam, weak subangular blocky, non-sticky, nonp l a s t i c , f r i a b l e , many roots with a gradual lower boundary  Bf  30 - 60 cm.  5 YR k/B yellowish red, loamy sand, weak subangular blocky, granular, non-sticky, non-plastic, f r i a b l e , many roots with a d i s t i n c t lower boundary  BC  60 - 90 cm.  10 YR 5/B l i g h t brownish grey, loamy sand, lenses of well sorted sand, single grain, non-sticky, non-plastic, f r i a b l e , few;roots with a d i s t i n c t lower boundary  C  90 cm.+  10 YR 6/6 yellowish brown, gravelly sand, structureless, massive, Whatcom glaciomarine, no roots  Aerial photograph of study area showing: (A)  Instrument shed  (B)  Water balance study p l o t , and  (C)  Bowen r a t i o machine.  Location of hydraulic lines (A) leading t D tensiometer cups and the rain gauge (B) r e l a t i v e to a 4.1 in. D.B.H. plantation Douglas f i r  Relative locations of tensiometer cups (foreground), instrument box and Bowen r a t i o machine support tower.  Location of instrument shed uithin the Douglas f i r plantation.  Rooting zone of Capilano gravelly sandy loam.  -Mt-  APPEIVDIX I I  Photographic Description of F i e l d  Instrumentation  Close-up of rain gauge and the tee-joints and the de-airing caps of the tensiometerpressure transducer system hydraulic l i n e s .  Inside of pressure trsnsducer box shouin (A) Pressure transducers (B) Thermostat (C) Heating element  Instrument box for housing power supply and thermoregulator for tensiometer-pressure  transducer syste  I s o l a t e d column of s o i l used f o r f i e l d of  determination  h y d r a u l i c c o n d u c t i v i t y showing: (A)  Neutron moisture meter access  (B)  H y d r a u l i c l i n e s f o r tensiometer-pressure transducer system.  tube  Neutron moisture meter (A)  i n s t a l l e d on access tube of s o i l column for detection of mater content by  (B)  scalar-ratementar i t y experiment.  in hydraulic conductiv-  Inside the instrument shed showing most of the data pickup equipment including: (A)  Bowen r a t i o trace  (B)  Soil water energy status trace  Close-up of instrument shed.  APPENDIX I I I  Neutron Moisture Meter C a l i b r a t i o n  Curve  V O L U M E T R I C  W A T E R  C O N T E N T ,  Q  (CM^CM'^  APPENDIX IV  Complete Record of Hydraulic Head and Matric Suction Data for Five S o i l  Depths  DATE  J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J  7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  OOOO 30 100 130 200 230 300 330 4CG 430 500 530 6C0 630 700 73G 8C0 830 900 930 1000 1030 1100 1130 12 0 0 1230 1300 1330 140C 1430 1500 1530 16C0 1630 1700 1 730 1800 1830 19C0 1930 2000 2030 21C0 2130 2200 223G 2300 2330  110.35 110 .35 111.85 113.35 113.35 112.60 111.85 113.35 112.60 111.10 108.84 108 .84 109.59 110.35 112.60 111.85 1 1 1 . 10 1 1 1 . 10 114.10 114.86 114.86 115 .61 114.10 114,86 113.35 114.10 112.60 111.85 112.60 112.60 1 1 4 . 10 114.10 114.86 117.11 117 .86 120.12 120.12 1 2 0 . 12 120.12 119.37 119.37  -110.68 -108.23 -111 .50 -112.31 -111.50 -110.68 -111.50 -112.31 -110.68 -110.68 -110.68 -108.23 -110.68 - 110.68 -110.68 -111 .50 -111.50 -113.13 -113.13 -114.76 -114.76 -115.58 -113.95 -113.95 -113.13 -111 .50 -110.68 -109.86 -110.68 -109.05 -110.68 -109.05 -110.63 -111.50 -111.50 -113.13 -113.95 -113.95 -113.13 -113.13 -112.31 -110.68 -110.68 -111.50 -113.95 -113.95 -113.95 -114.3 6  - 1 2 8 .10 -131.45 -130.61 -128.93 -128 .10 -128.10 -128.93 -128.93 - 1 2 8 . 10 -126.42 -128.10 -130.61 -128 .93 -128.10 -127 .26 -131.45 - 1 2 8 . 10 - 1 2 9 .77 -130.61 -132.28 - 1 3 2 .28 -132.28 -132.28 -131.45 -128.10 - 1 2 8 .9 3 -128.10 - 1 2 8 .10 -125.59 -12 3.91 -125.59 -125.59 -128.10 -128.10 -128 .93 -130.61 -131.45 -131.45 - 1 2 9 .77 -130.61 -129.7 7 - 1 2 8 .9 3 -128.10 -128.93 -130.61 -130.61 -130.61 - 1 3 1 .45  -130.2 3 - 130.23 - 1 3 1 .03 -131.03 -131. C3 -131.83 -131.03 - 1 3 1 . C3 -130.23 -130.23 -130.23 -127.84 -130.23 - 1 3 1 . 83 - 1 3 0 . 23 -131.03 -130.23 - 1 3 1 . 83 -133.42 -134.22 -133.42 -135.02 - 1 3 3 .42 -131.83 -131.8 3 -131.03 -129.44 - 1 2 9 . 44 -129.44 -131.03 -130.23  119 . 37 117.86 117.86 1 2 0 .87 120.87 120.87 120.87  - 13 1. C 3 -131.03 -130.23 - 1 3 1 . 03 -131.83 -132.63 -131.83 -131.83 -131.03 -130.23 -129.44 -129.44 -131.03 - 1 3 1 . 83 -131.83 -131.83 - 1 3 1 . C3  - 1 2 5". 5 9 -124.76 -12 5.59 -125.59 -121.43 -1.25.59 -123.09 -124.76 -125.59 -124.76 -12 6.43 -125.59 -127.26 -124.76 -126.43 -123.93 -125.59 -119.76 -118.93 - 1 1 9 .76 -118.9.3 - 119.76 -119.76 -118.93 -125.59 -12 5.59 -124.76 -125.59 -127.26 - 1 2 8 .92 -12 7.26 -125.59 - 1 2 7 .26 -130.59 -125.59 -125.59 - 1 2 3 .93 -123.93 -124.76 -125.59 -127.26 -127.2 6 -129.76 -127.26 -128.09 -125.59 -126.43 -124.76  DATE  J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J  8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  OOOO 30 IOC 130 200 230 300 330 400 43 0 500 530 6G0 630 700 730 800 830 9G0 93 0 1000 103 0 1100 1130 1200 12 30 1300 1330 1400 1430 15G0 1530 1600 1630 1700 1 730 1800 1830 1900 1930 2000 2030 2100 2130 2200 22 30 2300 2330  120.87 1 2 0 .87 121.62 121.62 121.25 120.87 120.87 1 2 0 . 12  -114.27 -114.19 -113.95 -113.95 -113.95 -114.76 -113,95 -113795 -112.31 -111.50 - 109.05 -110.63 -110.68 -112.31 -113.95 -114.76 -115.58 -115.58 -115.58 -116.40 -116.40 -116.40 -115.58 -114.76 -117.21 -114.76 -116.40 - 1 1 7 . 21 -117.46 -118.03 - 1 1 8 . 85 -118.03 -118.85 -119.66 -119.66 -119.66 -120.48 -119.66 -118.03 -118.03 -118.G3 -118.03 -119.66 -122.11 - 1 2 2 .11 - 1 2 2 .11 - 1 2 1 .30 -121.30  •  1 1 9 .37 116.36 115.61 117 .86 117.86 120.12 120.87 121.62 121.62 121.62 121.62 121.62 121.62 1 2 0 .87 120.87 120.12 12 0.87 120.87 121.62 12 3 . 1 2 123.12 123.12 125.38 125.38 126.13 127.63 127.63 128.39 129.14 129.89 129.14 129.89 130.64 130 .64 131.39 133.65 134.40 134.40 133.65 13 3 . 6 5  9 0 CM DEPTH -132.28 - 129 . 7 7 -132.28 -132.28 -130.61 -130.61 -132.28 -128 .93 - 1 2 8 . 10 -126.42 -128.10 -128.10 - 1 2 8 .9 3 -128.93 -130.61 -132.28 -136.47 -136.47 -136.47 -137.31 -136.4 7 -133.96 -132.28 -131.45 -132.28 -131.45 -132.28 -133.12 -133.12 -132.28 -132.28 -133.12 -132.28 -133.96 -134.38 -134.79 -133.9 6 - 1 3 3 .96 -133.12 -133.12 -133.12 -133.12 -134.79 -136.47 - 1 3 5 .63 -135.63 -134.79 -133.96  12 0 CM DEPTH -131.83 -131.83 -131.83 - 1 3 1 . 83 -130. 23 - 131.83 -13 0.23 -131.03 -129.44 -127.04 - 1 2 8. 6 4 - 1 2 9. 4 4 -130.23 -130.23 -131.C3 -131.8 3 -132.63 -133.42 - 134.22 -135.02 -138.21 - 1 3 2 . 63 -132.6 3 -131.83 - 131.83 -131.83 -131.83 -135.02 -135.C2 -134.22 -134.22 -135.C2 -134.22 -135.82 -135.82 -135.8 2 -134.22 -133.42 -134.22 - 1 3 3 .42 -133.42 - 132.63 -135.02 -136.61 - 1 3 5 . 82 -135.82 -135.82 -135.02  -12 5.59 -12.5.59 -125.59 -125.59 -127.26 -128.09 -125.59 -132.26 -130.59 -132 .26 -132.26 -129.76 - 1 3 2 .2 6 -126.43 -125.59 -124.76 -121.43 -119.76 -118.93 -121.43 -118.93 -125.59 -125.59 -12 4.76 -125.59 -123.93 -126.43 -127.26 -126.43 -125.59 -125.59 -127.26 -126.43 -125.59 -126.43 -126.43 - 1 2 8 .92 -12 6.43 -126.43 -129.76 -128.92 -128.09 -129.76 -125.59 ~126.43 - 125.59 -126.43 -127.26  DATE  J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J  9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9  TIME (HOURS )  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  0000 30 100 130 200 230 3C0 330 400 430 5C0 530 600 63 0 700 730 80 0 830 900 930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 180 0 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  132.90 131.39 130 .64 129.89 128.39 1 28 .39 129.14 128.39 128.39 128 .76 129.14 129.89 130 .64 132.90 1 3 2 . 14 132.14 131.39 129.89  -120.48 - 119.66 -118.03 -119.66 -118.85 -116.40 -117.21 -117.21 -117.21 -118.03 -118.85 -118.03 -119.66 -120.48 -122.93 -122.93 -122.11 -121.30 -122.11 -122 .11 -122.11 -122.11 -121 .30 -120.48 -120.48 -122.93 -122 .11 -122,93 -122.11 -122.11 -122,93 - 1 2 2 .93 -122.93 -122.93 -123.75 -123.75 -12 2 .93 -123.75 -123.75 -123.75 -123.75 -123.75 - 1 2 3 .75 -124.57 -125.38 -124.57 -123.75 -123.75  -133.96 -133.12 -132.70 -132.23 -132.28 -131.45 -131.45 -131.45 -131.45 -131.86 -132.28 -133.12 -133.12 -133.96 -136,47 -135.63 -134.79 -136.47 -136.47 -135.63 -135.63 -135.63 -134.79 -133.96 -134.79 -135.63 -134.79 -136.47 -134.79 -134.79 -134.79 -135.63 -134.79 -134.79 -135.63 -136.47 -135.63 -136.47 -135.63 -134.79 -135.63 - 1 3 5 .63 -136.47 -137.31 -137.31 -136.47 -135.63 -135.63  - 1 3 5 .02 -133.4 2 -133.42 -132.63 -132. 6 3 -131.83 -131.8 3 -131.83 - 1 3 1.83 -131.83 - 1 3 2 .63 -133.42 -135.C2 -135.82 -136.61 -135.82 -135.02 -135.G2 - 1 3 5 . C2 -135.82 -135.02 -134. 22 -134.2 2 -134.22 -135.02  1 2 9 .89 129.14 129.14 129.14 129 . 8 9 129.89 129.89 130 .64 12 9.89 131.39 1 3 2 .90 132.90 132.90 1 3 2 .14 132.90 123.65 13 3 . 6 5 134.40 135.90 136.65 1 3 8 .9 1 138.91 139.66 139 .66 140.41 141.17 142.67 142.67 141.92 141.92  - 13 5 . G 2 -136.61 -135.02 - 134.22 -135.02 -135.82 -135.82 -134.22 -135.02 -134.2 2 -134.22 -134.22 -134.22 - 1 3 5 . C2 -134.22 -134.22 -134.22 -134.22 -134.22 -135.82 -135.C2 - 1 3 5 .02 -135.02  -127.26 -128.09 -128.09 - 1 2 8 .92 -129.76 -129.76 -130.59 - 1 3 0 .59 -130.59 -131.42 - 1 2 8 .92 -128.92 -127.26 - 1 2 8 .09 - 1 2 7.2 6 -126.43 -126.43 -126.43 -126.43 -126.43 -12 6.43 -127.26 -127.26 -127.26 -12 8.09 -126.43 - 1 2 5 .59 -127.26 -127.26 -127.26 -127.26 -129.76 -129.76 - 1 3 0 .59 -130.59 -130.59 -129.76 -130.59 -130.59 - 1 3 1 .42 -130.59 -130.59 - 131.42 - 1 3 0 .59 -129.76 - 130.59 -130.59 - 1 3 0 .59  DATE  J10 J 10 JIG J10 J 10 J 10 J10 J10 J 10 J10 J10 J 10 J10 J10 J10 J10 J10 JIG J 10 J10 JIG J 10 J10 J10 J 10 J10 J10 J10 J 10 J10 J 10 J10 J10 J10 J 10 J10 J10 J 10 J 10 J10 J 10 J 10 J10 J10 J 10 J10 J10 J 10  TIME (HOURS )  3 0 CM DEPTH  6 0 CM DEPTH  0 0 CO 30 100 130 2C0 230 300 33 0 400 430 5C0 530 600 630 700 730 800 83G 900 93 0 100 0 1030 1100 1130 1200 1230 1300 1330 1400 1430 150 0 1530 1600 1630 1700 1730 1 800 1830 1900 193 0 20G0 2030 2100 2130 2200 2230 2300 2330  141.92 141.92 141 .92 140.41 140.41 140.41 141.17 1 4 1 . 17 141.92 1 4 1 .92 141.17 141.17  -124.57 -124.57 -124.57 - 1 2 3 .75 -124.57 -124.57 -124.57 -124.57 -125.38 -125.38 -126.20 - 1 2 5.38 -124.57 - 1 2 5 .38 -125.38 -127.02 -125.38 -125.38 -126.20 -125.38 -124.57 -126.20 -124.57 -126.20 -126.20 -127.02 -125.38 -127.02 -127.02 -12 7.02 -126.20 -127.02 -127.02 -127.02 -128.65 -129.47 - 1 3 0 .28 -129.47 - 1 2 9 . 47 - 1 3 0 .28 -129.47 -130.28 - 1 3 1 .10 - 1 3 1 .92 - 1 3 1 .10 - 1 3 1 .92 -131.92 -131.10  1 4 1 .17 139.66 140.41 141.17 138 .91 139.66 140.41 138 .16 138.16 138.16 1 3 8 .16 138.16 138.91 139.66 138 .91 139.6 6 139.66 139 .66 138.91 14G.41 1 4 2 .67 144.17 144.92 147.93 1 4 8 .68 151.69 152.44 152 .44 152.44 1 5 3 . 19 153.94 155.45 156.20 156.20 155.45 156.20  9 0 CM DEPTH  1 2 0 CM DEPTH  -136.47 -13 5.02 -136.4 7 -.134. 2 2 - 137 . 3 1 - 1 3 5 . C2 -136.47 -134.22 -136.47 -13 5.82 -136.4 7 -135.02 -136.47 -135.C2 -137.31 -135.02 -136.47 -135.02 -136.47 - 1 3 4 . 22 -136.47 -136.61 -136.47 -135.82 -135.63 - 135.C2 -135.63 - 135.82 -136.47 -136.61 -137.31 - 1 3 5.82 -137.31 - 135.8 2 -137.31 -135.82 -138.14 - 1 3 5 . 82 -136.47 -134.22 -134.79 -134.22 -136.47 -135.82 -135.63 -134.22 -136.47 - 1 3 5.02 -136.47 -135.82 -135.63 -136.61 -136.47 -135.82 -136.47 -136.61 -136.4 7 -135.82 -136.47 -135.82 -136.47 - 1 3 5 .02 -136.4 7 -136.61 -137 .31 -135.82 -136.47 -136.6 1 -138.14 -136.61 -137.31 -138.2 1 -138.98 -137.4 1 -138.14 -139.01 -138.9 8 -138.21 -139.82 -137.41 -138 .98 -1.37.4 1 -139.8 2 -139.01 -140.66 -139.Cl -141.49 -139.01 -141.49 -139.01 -141.49 - 138. 21 -141.49 138.21 -140.66 -137.41  -130.59 -130.5 9 -131.42 -131.42 -131.42 -131.42 - 131.42 - 1 3 1 .42 -132.26 -130.59 -130.59 -130.59 -131.42 -129.76 - 1 2 9 .76 -129.76 -129.76 - 1 2 9 .76 -130.59 -129.76 -130.59 -129.76 -130.59 -132.26 -131.42 -129.76 -132.26 - 1 3 0 .59 -133.09 -132.26 - 1 2 9 .76 -131.42 -131.42 - 1 3 1 .42 - 1 3 2 .26 -129.76 -131.42 -129.76 -130.59 -130.59 -131.42 -130.5 9 -130.59 -129.76 -130.59 -130.59 -128.92 -130.59  DATE  J l l J11 J l l Jll J l l J l l J l l Jll J l l Jll J11 J l l J l l J l l J l l J l l J l l J l l J l l Jll J l l J l l Jll J l l J11 J l l J l l J l l J l l J l l J l l J l l Jll J l l J l l J l l J l l J l l J l l J l l J l l J l l J l l J l l J11 J l l J l l J l l  TIME { HO UR S ) 0000 30 100 130 2C0 230 300 330 400 430 500 530 600 630 700 730 8C0 830 900 930 10C0 1030 1100 1130 1200 1230 13C0 1330 1400 143 0 150 0 1530 1600 1630 1700 173 0 18C0 1830 1900 193 0 20G0 2030 2100 2130 2200 2230 2300 2330  3 0 CM DEPTH  6 0 CM DEPTH  15 3 . 9 4 153.94 153.19 15 2 . 4 4 152.44 152.44 152.44 152.44 152.44 152.44 152.44 152.44 15 3 . 1 9 153.19 152.44 152.44 153.19 153.19 15 2 . 4 4 1 5 3 . 19 152.44 152.44 153.19 151.69 151.69 15 0 . 9 4 150.94 150.94 150.94 152.44 153.94 155.45 153.19 153.94 155.45 155 .45 156.95 158.45 160.71 162.21 164.47 164.47 165.22 166.72 167.47 167.47 167.47 168.23  - 1 3 1 .10 -130.28 -129.47 -129.47 -129.47 -129.47 -129.47 - 1 3 0 .28 - 1 2 9 . 47 -130.28 -129.47 -130.28 - 1 3 0 .28 -130.28 -130.28 - 1 3 1 .10 - 1 3 1 .10 -132.73 -131.92 -132.73 -131.92 -131.92 -132.73 -131.92 -132.73 -131.10 - 1 3 1 .10 -131.10 - 1 3 1 . 10 -133.55 -133.55 -135.18 -131.92 -132.33 -132.73 -132.73 - 1 3 3 .55 -134.37 -136.00 -136.82 -136.82 - 1 3 6 . 82 -136.82 -13 7.63 -136.82 -136.82 -135.18 -136.82  90 CH DEPTH -140.66 -139.82 -139.82 -137.31 -138 .14 -138.98 -138 .14 -137 . 31 - 1 3 8 .1 4 -138.14 -138 .14 -138.98 -138.98 -138.98 -139.8 2 - 1 3 9 .8 2 -139 , 8 2 -140.66 -140.66 -141.49 -140.6 6 -140.6 6 -140.66 -140.66 -139.82 -140.66 -133.98 -139.82 -141.49 -141.49 -141.49 -142.33 -139.82 -139.82 -140.66 -140.66 -139.82 -141.49 -143.17 -144.84 -144.84 -144.84 -144.84 -144.84 -144.00, -144.00 -144.84 -144.00  12 0 CM DEPTH -137.4 1 -136.61 -134.22 - 135.C2 -135.02 -134.22 -134.2 2 -135.82 -135.02 -135.82 -135.82 - 1 3 6 . 61 -13 7.41 -137.4 1 - 1 3 7. 4 1 -138.21 -139.80 -138.21 -139.01 - 140.60 -139.80 - 1 3 9 . 80 -139.Cl -139.01 - 1 3 8 . 21 - 137. 41 -13 8.21 -138.21 -137.4 1 -138.21 -139.80 - 1 3 8 . 21 -137.41 -137.4 1 -138.21 - 1 3 9 . 01 -138.21 -13 8.21 -139.01 -139.01 -139.80 - 1 3 9 . 80 -139.80 -139.80 -139.80 -139.80 -139.80 - 1 3 9. 8 0  -131.42 - 1 3 2 .2 6 -131,42 -133.92 -133.92 - 1 3 3 .09 -133.92 -133.09 -133.09 -133.92 -133.09 - 1 3 3 .09 -132.26 -131.42 -131.42 -130.59 -129.76 -130.59 -128.09 -128.09 -128 .09 -128.92 -127.26 - 1 2 9 .76 -129.76 -130.59 -131.42 -131.42 -131.42 -130.59 - 1 3 0 .59 -132.26 -133.09 -133.09 - 1 3 3 .09 -133.09 -133.92 -132.26 -131.42 -130.59 - 1 2 9 .76 -130.59 -130.59 -132.26 -130.59 -130.59 -130.59 -129.76  DATE  J12 J 12 J 12 J12 J12 J 12 J12 J12 J 12 J12 J12 J 12 J 12 J12 J12 J 12 J12 J12 J 12 J12 J12 J 12 J12 J12 J12 J 12 J12 J12 J 12 J12 J 12 J 12 J12 J12 J12 J 12 J12 J12 J 12 J12 J12 J 12 J12 J12 J12 J 12 J12 J12  TIME (HOURS) OOGO 30 100 130 2CG 230 300 330 400 430 500 530 600 630 700 730 800 83 0 900 930 1000 1030 1100 1130 12C0 1230 1300 133 0 1400 1430 1500 1530 160 0 1630 1 700 1730 1800 1830 1900 1930 ' 2000 2030 2100 2130 2200 2230 2300 2330  3 0 CM DEPTH  6 0 CM DEPTH  165 .22 165.97 166.72 1 6 7 .47 165.97 165.97 1 6 5 .97 165.97 166.72 165.97 1 6 5 .97 165.97 166.72 166 .72 166.72 165.97 165 .22 165.97 165.97 162.96 162.96 163.72 163.72 16 3.7 2 163.72 163.72 1 6 1 .46 160.71 160.71 161.46 162.96 162.96 162.96 1 6 5 .97 167.47 168.23 170.48 170.48 171.23 173.49 176.49 177.25 181.00 1 8 1 .00 181.00 181.76 1 8 1 .76 181.00  -136.82 -136.00 - 136.GO -136.00 -136.00 -136.00 -135.18 -136.00 -136.82 - 1 3 5 . 18 - 1 3 6 .82 -13 7.63 -135.18 -136.00 -136.82 - 136.82 - 1 3 6 .00 -136.82 -137.63 -137.63 -137.63 -139.27 -140.08 -139.27 -137.63 -136.82 -136.00 -137.63 -136.00 - 1 3 6 .00 -136.82 -137.63 -138.45 -138.45 -140.08 -140.90 -140.08 -140.08 -140.90 -140 .08 -143.35 -143.35 -143.35 - 1 4 3 .35 -142.54 -143.3 5 -143.35 -143.35  9 0 CM DEPTH -144.00 -143.17 -143 . 17 -142.33 -142.33 -142.33 -142.33 -144.00 -144.00 -143.17 -141.49 -144.00 -142.33 - 1 4 3 . 17 -144.00 - 1 4 3 . 17 -143.17 -144.84 -144.84 -144.8 4 -144.00 -146.52 -145.68 -144.00 -142.33 -143.17 -142.33 -142.33 -142.33 -142.33 -142.33 -142.33 - 1 4 3 .17 -143.17 -145.68 -146.52 -145.68 -145.68 -146.5 2 - 1 4 8 .19 - 147 . 3 5 -148.19 -148 .19 -148.19 -148.19 -148.19 -148.19 - 1 4 8 . 19  1 2 0 CM DEPTH -139.80 -139.01 - 1 3 9 . 01 -139.01 -139.Gl -139.01 -139.Cl -138.21 -138.21 -139.01 -138.21 -13 9.80 -139. 80 -139.01 -13 9.01 -139.01 -139.0 1 - 1 3 9.80 -139.01 -139.80 -139.01 -140.60 -142.20 -139.80 -137.41 - 1 3 9 . 01 - 1 3 9 . 01 -139.80 -139.80 -139.8 0 -139.80 -140.60 -139.80 -141.40 -140.60 -140. 6 0 -140.60 -140.60 -141.40 -142.20 -142.99 -142.99 -142.99 -144.59 -142.20 -143.79 -140.60 -140.60  -131.42 -132 .26 -133.09 -133.92 -132.26 - 1 3 2 .26 -133.09 - 1 3 3 .09 -133.09 -133.09 - 132.26 -131.42 -132.2 6 -132.26 - 1 3 3 .09 - 1 3 2 .26 -132.26 - 1 3 2 .26 - 1 3 2 .26 -131.42 -132.26 - 1 2 9 .76 -128.09 -127.26 - 1 2 6 .43 -133.92 -133.09 - 1 3 2 .2 6 -134.75 -133.92 -133.92 -133.09 -133.92 -133.09 - 1 3 3 .92 - 1 3 3 .92 -133.09 - 1 3 3 .09 -133.09 -133.09 -133.09 - 1 3 1 .42 -132.26 -132.26 -132.26 -131.42 -132.2 6 - 1 3 2 .26  DATE  J13 J13 J13 J13 J13 J13 J 13 J13 J 13 J13 J13 J13 J13 J13 J13 J 13 J13 J13 J13 J13 J13 J13 J 13 J13 J13 J 13 J 13 J13 J 13 J 13 J13 J13 J 13 J 13 J13 J 13 J13 J13 J 13 J 13 J13 J 13 J13 J13 J13 J 13 J13 J13  TIME (HOURS) OOOO 30 100 130 200 230 300 33 0 400 430 500 530 600 630 700 730 800 830 90 0 930 1000 103 0 1100 1130 1200 12 30 1300 133 0 140 0 1430 1500 1530 1600 1630 1700 1730 1800 1 830 1900 1930 2000 203 0 2100 2130 2 2 CO 2230 2 300 2330  3 0 CM DEPTH  6 0 CM DEPTH  180 .25 130.25 181.00 181 .00 179.50 180. 2 5 180.25 180 .25 181.00 181.76  -142.54 - 1 4 2 .54 -142.54 - 1 4 2 .54 -140.08 -140.08 -140.90 -140.90 -140.90 -140.90 -140.90 -140.90 -141.72 -142.54 -142.54 -143.35 -143.35 -144.17 -144.17 -145.80 -144.99 -145.80 -145.80 -145.80 -145.80 -145.80 -144.99 -144.99 - 1 4 4 .99 -144.99 -144.99 -144.99 -144.99 -146.62 - 1 4 5 .80 -146.62 -146.62 -147.44 -147.44 -147.44 -147.44 -148.25 -148.25 -149.07 -149.89 -149.07 -149.89 -149.89  182 .51 182.51 182.51 183.26 18 2 . 5 1 182.51 182.51 18 1 . 7 6 181.76 181.00 18 1 . 7 6 181.00 181.00 180.25 1 7 9 .50 178.75 177.25 1 7 6 .49 178.00 178.00 1 7 6 .49 177.25 178.00 180.25 179.50 182.51 183.26 18 2 . 5 1 187.02 187.77 189.27 190.02 193.03 196 .04 196.04 196.79 197.54 197 .54  9 0 CM DEPTH -147 .35 - 147 . 3 5 -147 .35 -146.52 -144.84 -145.68 -146.52 -146.52 -145.6 8 -145.68 - 1 4 5 .68 -146.52 -146.52 -146.52 -147 . 3 5 -148.19 -148.19 - 1 4 8 . 19 -148.19 -149.87 -149 .87 -150.70 -150.70 -151.54 -150.70 -149.87 -149.03 -149.03 -149.0 3 -148.19 -148 .19 -147 .35 -147.35 - 1 4 9 .0 3 -149 .03 -149.03 -149.8 7 -149.87 -149.87 -149.87 -150.70 -151.54 -150.70 -150.70 -152.38 -151.54 -150.70 -150.70  1 2 0 CM DEPTH - 1 3 9 . 80 -139.80 -139.80 - 139.0 1 -13 8.21 -139.01 -139. G l -139.Cl -139.0 1 -139.01 - 1 3 9 . 80 -139.01 - 1 3 9 . 80 - 140.60 -142.20 -142.99 -143.79 -143.79 -144.59 -143.79 -143.79 -145.39 - 1 4 6 . 18 - 1 4 6 . 18 -145.39 -144.59 -143. 79 -142.99 -144.5 9 -142.20 - 141.40 -141.40 -142.20 -140.60 -142.20 -142.20 - 140.60 - 142.20 - 1 4 2 .20 -142.20 -142.99 -142.99 -142.99 - 1 4 4 . 59 -145.39 -143.79 -143.79 -142.99  -133.09 -133.09 - 1 3 3 .09 -133.92 -135.59 -134.75 -135.59 -135.59 -134.75 -134.75 -134.75 -135.59 - 1 3 3 .92 -133.09 -132.26 - 1 3 2 .26 -131.42 -131.42 - 1 3 0 .59 -130.5 9 -129.76 -129.76 -129.76 -129.76 -130.59 - 1 3 1 .42 -130.5 9 -132.26 -133.09 -133.09 -132.26 - 1 3 2 .26 - 1 3 3 .09 -133.09 - 1 3 2 .26 - 1 3 3 .09 -133.09 -133.09 -133.09 -133.09 -133.09 -133.09 -133.92 - 1 3 3.92 -133.92 -134.75 -133.09 -133.09  CATE  J14 J14 J 14 J 14 J14 J14 J 14 J14 J14 J 14 J14 J14 J14 J 14 J14 J14 J 14 J14 J14 J 14 J14 J14 J 14 J 14 J14 J 14 J 14 J14 J14 J 14 J14 J 14 J 14 J14 J 14 J 14 J14 J 14 J14 J14 J14 J14 J 14 J14 J 14 J 14 J14 J14  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  OOOO 30 1G0 130 200 230 300 330 40 0 430 500 530 6C0 630 700 730 SCO 830 9G0 930 1000 103 0 HOG 1130 1200 1230 1300 1330 140 0 1430 1500 1530 1600 163 0 170 0 1730 1800 183 0 1900 1930 2000 2030 2100 2130 22CG 2230 2300 2330  196.79 196 .79 197.54 196.79 197 .54 197.54 197.54 197.54 196.79 197.54 197.54 198.29 198.29 199.04 197.54 197.54 197.54 196 .04 196.04 193.03 193.03 1 9 0 .78 190.78 190.02 189.27 189.27 189.27  -149.07 -149.07 -148.25 -148.25 -148.25 -148.25 -148.25 -148.25 -148.25 -148.25 -149.07 -148.25 -149.89 -150.70 -150.70 -149.89 -151.52 -149.89 -149.89 -149.07 -150.70 -150.70 - 1 5 1 .52 -151.52 -151.52 - 1 5 1 .52 -152.34 - 1 4 9 .89 - 1 5 2 .34 -151.52 -152.34 - 1 5 3 . 15 - 149.07 -153.15 - 1 5 3 .15 - 1 5 3 . 15 -156.42 -156.42 -156.42 -157.24 -158.87 -159.69 -159.69 -159.69 -160.51 -160.51 -159.69 -159.69  -150.70 -150.70 -150.70 -149.87 - 1 4 9 .87 -149.87 -149.87 - 1 4 9 .87 -149.87 -149.8 7 -149.87 -149.8 7 -149.87 -149.87 -149.87 -149.87 -150.70 -149.8 7 -149.87 -149.87 -150.70 -150.70 -151.54 -151.54 -150.70 -150.70 -150.70 -150.70 -150.70 -150.70 - 1 5 3 .21 -153.21 -153.21 -154.05 -153.21 -153.21 -154.89 -156.56 -155.73 - 1 5 7 .40 - 1 5 9 .07 -157.40 -158.24 -158.24 -159.0 7 -158 .24 - 1 5 8 .24 -158.24  -142.20 -142.20 -142.20 -142.20 -142.20 -142.99 -143.79 -142.99 - 142.20 -142.20 -142.20 -143.79 -142.99 -142.20 -142.20 -142.20 -142.99  1 8 9 .27 188.52 189.27 189.27 190.02 189.27 1 9 0 .78 193.78 193.78 197.54 198.29 199.80 203.55 2 0 5 .06 206.56 208.06 211.07 211.82 211.07 211.07 211.82  - 142.20 -142.99 -142.99 -144.59 -144.59 -144.5 9 -143.79 -143.79 -143.79 -143.79 - 1 4 4 . 59 -144.59 -144.59 -143.79 -145.39 -142.99 -142.99 -146.18 -146.18 -146.98 - 146.18 -146.98 -147.78 -147.7 8 -148.58 -148.58 - 1 4 8 . 58 -150.17 - 1 4 8 . 58 -147.78 - 1 4 8.58  -133.09 -133.09 -133.09 -133.09 -133.09 -133.09 -133.09 -133.09 -133.09 -133.92 -133.92 -133.09 -133.09 -133.09 -133.09 -133.09 -.133 . 0 9 -133.09 -132.26 - 1 3 2 .26 -133.09 -133.09 -133.92 -133.09 -133.09 - 1 3 2 .2 6 - 1 3 3 .09 -132.26 -133.09 - 1 3 3 .09 -133.09 - 1 3 3 .92 -139.75 -141.42 -141.42 -143.08 -143.08 -143.08 -143.92 -143.08 - 144.75 -144.75 -146.41 -147.25 -147.25 -146.41 -145.58 -146.41  DATE  J15 J15 J15 J 15 J15 J 15 J15 J15 J15 J 15 J15 J15 J15 J15 J15 J15 J15 J15 J15 J 15 J15 J15 J 15 J15 J15 J 15 J 15 J15 J15 J 15 J15 J15 J 15 J 15 J15 J 15 J 15 J15 J15 J15 J15 J15 J15 J15 J15 J15 J 15 J15  TIME (HOURS)  3 0 CM DEPTH  0000 30 ICO 130 200 230 300 330 400 430 500 530 6G0 630 700 730 800 83 0 900 930 1000 1030 1100 1130 1200 1230 1300 133 0 1400 1430 1 500 1530 160 0 1630 1700 173 0 1800 1 83 0 1900 1930 2000 2 03 0 2100 2130 2200 2230 2300 2 330  -211.82 -212.57 -212.57 -213.33 -213.33 -212.57 -212.57 -212.57 -212.57 - 2 1 2 . 57 -212.57 -214.08 - 2 1 4 . 83 -214.83 - 2 1 5 .58 -214.83 -213.33 -213.33 -212.57 -212.57 -211.82 -209.57 - 2 1 0 . 32 -207.31 -207.31 -207.31 -206.56 - 2 0 6 .56 -205.06 -204.31 -204.31 -205.06 - 2 0 3 . 55 -204.31 - 2 0 5 .06 -205.06 -208.06 - 2 1 0 .32 -212.57 -215.58 -218.59 -220.09 - 2 2 3 . 10 -226.10 - 2 2 9 .86 - 2 3 0 . 61 -233.62 -233.6 2  6 0 CM DEPTH -159.69 -158.87 -159.69 -159.69 -158.87 -156.42 -156.42 -156.42 -156.42 -155.60 -157.24 -158.05 -158.87 -159.69 -159.69 - 1 6 1 .32 -160.51 -160.51 -160.51 -162.14 - 1 6 1 .32 - 1 6 2 .14 - 1 6 1 .32 -161.32 -160.51 -160.51 -161.32 - 1 6 2 .14 -161.32 -162.14 -162.14 - 1 6 2 .96 -162.96 -162.96 - 1 6 2 .14 - 1 6 2 .96 - 163.77 -162.96 -164.59 -165.41 -167.86 -168.67 -169.49 -171.12 - 1 7 0 .31 -171.12 - 1 7 1 . 12 -171.12  9 0 CM DEPTH - 1 5 8 .24 - 1 5 7 .40 -157 .40 - 1 5 6 . 56 -156 .56 -155 .73 -154 . 89 - 1 5 4 .89 -154.05 -154 .05 - 1 5 4 .89 -155 .73 -155 .73 - 1 5 6 .56 - 1 5 6 .56 - 1 5 7 .40 - 1 5 6 . 56 - 1 5 7 . 40 - 1 5 8 .24 -158 .24 - 1 5 9 .07 - 1 5 8 .24 -158 .24 - 1 5 8 .24 - 1 5 7 .40 -157 .40 - 1 5 8 .24 -157 .40 - 1 5 8 .24 - 1 5 7 . 40 - 1 5 9 .07 - 1 5 7 .40 -157 .40 - 1 5 9 .07 - 1 5 8 .24 -158 .24 - 1 6 1 .59 - 1 5 9 .07 - 1 6 1 .59 - 1 5 9 .9 1 - 1 6 1 .59 - 1 6 2 .42 - 1 6 4 .10 - 1 6 4 .94 -164.94 - 1 6 4 .94 - 1 6 4 .94 - 1 6 4 .94  1 2 0 CM DEPTH -148.58 - 147.7 8 -147.78 -144.59 -143.79 -142.20 - 1 4 2 . 20 - 1 4 2 . 20 -142.20 -142.20 -142.20 - 145.3 9 -145.39 -145.3 9 -145.39 -146.98 -146.98 - 147.78 -148.58 -147.78 -149.38 -148.5 8 -148.58 -147.78 -148.58 -148.58 - 1 4 8 . 58 -147.78 - 1 4 6 . 18 - 1 4 8 . 58 -147.78 -147.78 -146.98 -145.39 -146.18 - 1 4 6 . 18 - 1 4 6 . 18 -146.98 -146.98 -147.78 - 146.98 -148.58 -149.38 -148.58 -149.3 8 -150.17 - 1 4 9 . 38 -150.17  1 5 0 CM DEPTH -144.75 -143.92 -143.08 -143.08 -143.08 -141.42 -140.58 -141.42 -140.58 -140.58 -141.42 -141.42 -141.42 -142.25 -141.42 -141.42 -143.08 - 141.42 - 1 4 2 .2 5 -143.08 -143.08 -143.08 -141.42 -143.08 -142.25 -142.25 -143.08 -142.25 -140.58 -141.42 -142.25 -141.42 -141.42 -141.42 -139.75 -141.42 -141.42 -141.42 -143.08 -143.08 -142.25 -146.41 -146.41 -146.41 - 147.25 -148.08 -146.41 -145.58  DATE  J 16 J16 J16 J 16 J16 J16 J 16 J 16 J16 J16 J 16 J16 J 16 J 16  J16  J16 J 16 J 16 J16 J 16 J 16 J16 J16 J 16 J16 J16 J 16 J 16 J16 J 16 J 16 J16 J 16 J 16 J16 J16 J16 J 16 J16 J 16 J 16 J16 J 16 J 16 J16 J16 J 16 J 16  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  OOGO 30 ICO 130 200 230 300 330 400 43 0 500 530 60 0 630 700 7 30 800 830 900 930  -234.37 -234.37 -234.37 - 2 3 5 . 88 -237.38 -238 .13 - 2 4 0 . 39 -241.14 -241.14 -241.14 -241.89 -241.89 -241.89 -241.89 -242.64 -242.64 - 2 4 1 . 89 -241.14 -241.14 -241.14 -244.15 -245.65 -245.65 - 2 4 3 . 39  -171.12 -171.12 -170.31 -170.31 -171.12 - 1 7 1 .12 -171.12 -171.12 -171.12 -171.94 -172.76 -172.76 - 1 7 2 .76 -171.94 - 1 7 1 .94 -171.94 -171.94 -171.94 - 1 7 2 .76 - 1 7 3 .57 - 1 7 8.4 8 -179.29 -176.02 -178.48 -176.84 -176.84 -176.02 -176.02 -176.02 -176.02 -178.48 -176.84 -176.84 -177.66 -179.29 -180.93 -180.93 -180.11 -179.29 -179.29 -178.48 -180.93 -183.38 -180.93 -180.11 -180.93 -184.19 -185.83  -164.94 -164.94 -164.94 -164.94 -164.10 -164.94 -166.61 -165.7 7 -164.94 -164.94 -165.77 -165.77 -165.77 -165.77 -165.77 - 1 6 5 .77 -165.77 -164.94 -165.77 -169 .96 -169.96 -172.47 -167.45 -170.80 - 1 6 9 .96 -169.12 -.169. 12 -167.45 -168.28 -168.28 -169.96 - 1 6 9 .96 -169.12 -170.80 -170.80 - 1 7 2 .47 -173.31 -174.15 - 1 7 4 . 15 -169 .96 -170.80 -17 3.31 -174.98 -171.63 - 1 7 1 .63 -171.63 -174.98 -174.15  -150.17 - 1 5 0 . 17 -149.38 - 1 5 0 . 17 -150.17 -149.38 -150.17 - 1 4 9 . .38 -150.17 - 1 5 0 . 17 -150.17 -149.3 3 -148.58 -148.58 -148.58 -148.58 -147.78 -147.78 -147.78 -152.57 -151.77 -153.3 6 -153.36 -153.36 -153.36 -153.36 -150.17 -150.17 -14 9.38 -152.57 -154.96 - 1 5 0 . 17 -152.57 -153.36 -155.76 -153.36 -155.76 -156.55 -153.36 -150.17 - 1 5 1 . 77  1000  1030 1 ICO 1130 1200 1230 1300 1330 1400 143 0 1500 1530 16G0 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  -245.65 -243.39 - 2 4 1 . 89 -241.14 -242.64 -243.39 -244.90 - 2 4 4 .90 -244.90 - 2 4 6 . 40 -249.41 -250.16 - 2 5 0 . 91 -250.91 - 2 5 0 .16 -247.90 -256.92 -258.43 -260.68 - 2 5 7 . 68 -260.68 -262.19 -265.19 -265.19  - 154.96 -155.76 -153.36 - 153.36 -152.57 - 1 5 2 .57 -154.16  -144.75 -143.92 -146.41 -144.75 -145.58 -145.58 -146.41 -145.5 8 -145.58 -145.58 -146.41 -146.41 -143.92 -146.41 -145.58 -146.41 -143.92 -143.92 -143.08 -143.92 -143.92 -143.92 -142.25 - 1 4 5 .58 -143.92 -143.92 - 1 4 3 .08 -143.08 -143.08 - 1 4 3 .92 -143.92 -143.08 -143.08 - 1 4 3 .08 -146.41 -146.41 -145.58 -148.08 -147.25 - 1 4 7 .25 -147.25 -146.41 -147.25 -148.91 -148.91 -146.41 -148.08 -146.41  DATE  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  J 17 J17 J17 J17 J 17 J17 J 17 J 17 J17 J17 J17 J 17 J17 J17 J 17 J17 J17 . J 17 J17 J17 J17 J 17 J17 J 17 J 17 J 17 J17 J 17 J17 J17 J17 J 17 J17 J 17 J 17 J17 J17 J 17 J17 J17 J 17 J 17 J17 J 17 J 17 J17 J 17 J 17  000 0  265.19 2 6 5 . 19 2 6 5 .19 265.19 265.19 2 6 5 .94 268.20 267.45 268.95 268.95 268.95 268.95 270.45 271.21 270.4 5 2 7 1 .96 271.21 270.45 271.96 2 6 9 .70 270.45 268.95 2 6 5 . 19 265.19 263.69 2 6 5 .19 264.44 263.69 259.93 257.68 258.43 257.68 259 .93 260.68 260.68 2 6 3 .69 264.44 265.19 265.94 2 6 9 .70 271.21 271.96 273.46 277.97 278.72 2 79.47 279.47 280.23  -180.93 - 1 8 0 . 11 -180.11 -180.11 -179.29 -179.29 -180.11 -180.11 -180.11 -180.11 -180.93 - 1 8 0 . 93 -180.93 -184.19 -180.93 -185.01 -184.19 -180.93 -187.46 -181.74 -185.83 -187.46 -180.93 -181.74 - 1 8 0 . 11 -184.19 -183.38 -186.64 -180.11 - 1 8 0 .93 -181.74 -183.38 -183.38 -185.83 -187.46 -187.46 -188.28 -188.28 - 1 8 9 .09 -189.91 -189.91 - 193.18 -190.73 -195.63 -193.99 -194.81 -194.81 -194.81  -171.63 -169.96 -168.28 -169.96 - 1 6 9 . 12 - 1 6 9 .12 -169 .96 -169.96 -169.96 -170.80 -171.63 -169.96 -170.80 -172.47 -172.47 - 1 7 4 . 15 -174.15 -174.15 -173.31 -172.47 -173.31 -174.15 -169 .96 - 1 7 0 .80 -17 3.31 -174.15 -171.63 -174.15 -169.96 -170.80 -172.47 -171.63 -17 2.47 -173.31 - 1 7 4 . 15 -174.15 -174.98 -176.66 -174.98 -177.49 -178.33 - 1 7 9 . 17 -179.17 -182.52 -180.01 -180.84 -180.01 -180.84  -150.17 - 1 5 0 . 17 -150.17 -148.58 -148. 58 -150.17 - 149.38 -150.17 -150.97 -150.97 -151.77 - 1 5 1 . 77 -152.57 -154.96 - 1 5 3 . 36 -155.76 -154.96 -155.76 -153.36  30 100 130 200 230 "300 330 400 43 0 50 G 530 600 630 700 730 800 830 900 930 1000 1030 1100 1130 1200 12 30 1300 1330 1400 1430 150 0 1530 1600 1630 1700 1730 1 800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  - 153.36 -154.96 -154.96 -152.57 -153.36 -154.96 - 1 4 6 . 18 -3.50. 17 -154.96 -150.17 -.150. 17 - 1 5 0.17 - 1 5 1 . 77 -150.17 -153.36 -151.77 -153.36 -154.16 -154.96 -154.96 - 154.96 -154.96 -155.76 -154.96 -157.35 -156.55 -156.55 - 156.55 -157.35  -143.0 8 -142.25 -141.42 - 1 4 2 .25 - 1 4 2 .25 -143.08 -142.25 - 1 4 3 .0 8 -.143.08 -143.08 -143.08 -143.92 -146.41 -146.41 -146.41 -147.25 -147.25 -148.08 -148.91 -148.91 - 1 4 8 .0 8 -146.41 -147.25 -146.41 -144.75 -144.75 -14 3.08 - 1 4 3 .92 -142.25 -143.08 -143.08 -143.08 -143.92 -146.41 -146.41 -146.41 -148.08 -147.25 -148.91 -148.91 -149.75 -149.75 -150.58 - 1 5 1 .41 -151.41 -151.41 -150.58 - 1 5 0 .58  DATE  J18 J 18 J 18 J18 J 18 J 18 J18 J 18 J 18 J18 J18 J 18 J 18 J18 J18 J 18 J18 J 18 J 18 J18 J18 J 18 J 18 J18 J 18 J 18 J18 J18 J 18 J18 J18 J 18 J 18 J18 J18 J 18 J18 J18 J 18 J18 J18 J 18 J 18 J18 J 18 J18 J18 J18  TIME (HOURS)  3 0 CM DEPTH  OOOO 30 100 130 2C0 230 300 330 400 430 500 530 60 0 630 700 730 800 830 900 930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 22GG 2230 2300 233 0  2 8 0 .98 281.73 280.23 280 .23 280.23 280.23 279.47 280.98 280.98 280.98 281 .73 283.23 283.23 2 8 3 .23 283.98 283.98 283.23 282.48 280.93 280.23 280.23 279.47 278.72 278 .72 2 7 7.97 274.21 27 2 .71 271.21 268.20 270.45 2 6 5 .19 2 6 5 . 19 265.94 2 6 6 .70 267.45 270.45 27 1 . 2 1 271.96 273.46 276.47 2 7 7 .97 279.47 283.23 2 8 6 .99 288.49 293.00 2 9 3 .76 294.51  6 0 CM DEPTH -194.81 -191.54 -190.73 -190.73 -189.91 -189.91 -189.91 -189.91 -189.91 - 1 9 2 .36 -189.91 -192.36 - 1 9 3 . 18 -193.99 -193.99 - 194.81 -193.99 - 1 9 3 . 18 -194.81 - 1 9 4 .81 -195.63 -194.81 - 1 9 5 . 63 -195.63 -193.99 -194.81 -193.99 -194.81 -195.63 -193.99 -194.81 -194.81 - 192.36 -195.63 -196.45 - 196.45 -198.08 - 2 0 2 .16 -200.53 - 2 0 2 .16 -202.98 -202.98 -205.43 -207.06 -209.51 -210.33 -208.70 -208.70  9 0 CM DEPTH  12 0 CM DEPTH  -180 .01 -173.33 -175.82 -175.82 -176.66 -176.66 -174.98 -176.66 -177.49 -175.82 -176.66 -177.49 -176.66 -177.49 -178.33 -178.33 -175.82 -176.66 -180.01 -180.01 - 1 8 0 .84 -180.01 -180.84 -180.84 -178.33 -179.17 -178.33 -176.66 -178.33 -176.66 -176.66 -180.01 -178.33 -179.17 - 1 8 0 .84 -181.68 -180.84 -181.68 -182.52 -181.68 -184.19 -184.19 -186.70 -189.22 -189.22 -189.22 - 1 8 9 .22 -188.38  -154.96 -154.16 -153.36 -153.36 - 1 5 2 .57 -152.57 -1.53. 3 6 -152.57 -152.57 -152.57 -151.77 -152.57 -153.36 -153.36 -153.36 -153.36 - 1 5 4 . 16 -154.16 -154.96 - 1 5 5 . 76 -156.55 -154.96 - 1 5 8 . 15 -156.55 - 1 5 5 .76 -155.76 - 1 5 4 . 96 -15 4.16 -153.36 - 154.16 -153.36 -153.36 -153.36 - 1 5 4 . 16 - 1 5 2 .57 -153.36 -1.54. 16 -155.76 -153.36 -154.96 -154.96 - 1 5 5 .76 -155.76 -157.35 -157.35 -156.55 -156.55 -156.55  -148.91 - 1 4 8 .91 -147.25 -146.41 -146.41 -146.41 -146.41 -146.41 - 1 4 6 .41 -145.58 -144.75 -146.41. -146.41 -145.58 -146.41 -146.41 -146.41 -146.41 - 1 4 7 .25 -147.25 - 147.25 -147.25 -148.08 -148.08 -145.58 -145.58 -143.92 -143.92 - 1 4 3 .92 -143.08 -143.08 - 1 4 3 .0 8 -143.08 -143.08 - 1 4 3 .92 -143.08 -144.75 -146.41 -144.75 -146.41 -147.25 - 1 4 8 .91 -149.75 -150.58 - 1 5 0 .58 -150.58 -150.58 -149.75  DATE  J19 J19 J 19 J19 J19 J 19 J 19 J19 J 19 J 19 J19 J19 J 19 J19 J19 J 19 J 19 J19 J 19 J19 J19 J19 J19 J19 J19 J 19 J 19 J19 J 19 J19 J19 J19 J 19 J19 J19 J 19 J 19 J19 J 19 J 19 J19 J19 J 19 J19 J19 J 19 J 19 J19  TIME (HOURS)  3 0 CM DEPTH  OGOO 30 100 130 200 230 300 33 0 400 430 500 530 600 630 700 730 800 830 900 930 1000 1030 1100 1130 1200 1230 1300 133 0 1400 1430 1500 1530 1600 1630 1700 1730 1800 183 0 190 0 1930 2000 203 0 2100 2130 2200 2230 2300 2330  296.76 298.27 297.51 298.27 301.27 301.27 302.02 3 0 2 .78 303.53 303.53 3 0 4 .28 305.03 30.5. 7 8 3 05.78 306 .53 305.78 305.78 304.28 302.78 302.78 302.02 301.27 302.02 301.27 2 9 9 .02 296.76 296.01 2 9 5 .26 2 94.51 296.76 298.27 298.27 301.27 301.27 302.02 302.78 302.78 305 .03 305.78 308.04 309.54 3.11 . 0 4 311.80 314.80 316 .31 316.31 316.31 3 1 7 .06  6 0 CM DEPTH -209.51 -210.33 -208.70 -209.51 -210.33 -209.51 -211.15 -211.15 - 2 1 1 .15 -211.15 -211.96 -211.96 -211.96 -211.96 - 2 1 1 .15 -211.15 -211.15 - 2 1 1 .15 -210.33 -211.15 -211.96 -211.96 -211.96 -211.96 - 2 1 2 . 13 -213.60 - 2 1 3 . 60 -213.60 -214.42 -216.05 -216.87 -218.50 -217.68 -220.95 -221.77 -222.58 -223.40 -222.58 -22 5.85 -226.67 -227.48 -227.48 -228.30 -228.30 -228.30 -228.30 -228.30 -228.30  9 0 CM DEPTH  1 2 0 CM DEPTH  -188.38 -189.22 -188.38 -189.22 -189.22 -189.22 -189.22 -190.05 -190.05 -190 .05 -190.0 5 -190.05 -190.05 -190.05 -189.22 -190.05 -190.05 -190.05 -190.05 -190.05 -190.05 - 1 9 0 .89 -191.73 -190.89 -192.56 -192.56 -193.40 -192.56 -193.40 -196.75 -195.08 -197.59 -198.43 -198.43 -199.26 -200.10 -200.94 -200.94 -200.94 -203.45 -204.29 -203.45 -203.45 -203.45 -202.61 -201.77 -202.61 -202.61  -157.35 -158.15 - 1 5 8.15 -158.15 -157.35 -15 7.35 - 1 5 6 . 55 - 1 5 6 . 55 -15 7.35 -157.35 - 157.35 -158.15 -158.95 -158.15 -158.15 - 1 5 5 .76 -155.76 -155.76 -155.76 -156.55 -157.35 -156.55 - 1 5 8 . 15 -158.15 -157.35 - 1 5 8 . 15 - 1 5 8 . 95 - 1 5 9 . 74 -158.95 -160.54 -161.3 4 - 160.54 -161.34 -162.93 -162.93 -162.93 -162.93 - 1 6 3 . 73 -162.93 -163.73 -163. 7 3 -164.53 -162.93 -162.93 -163.73 - 1 6 2 . 14 -162.14 - 1 6 1 . 34  -150.58 -150.5 8 -149.75 -150.58 -149.75 -149.75 -150.5 8 -150.58 -150.58 -150.58 -150.58 -151.41 -151.41 -150.5 8 - 149.75 -149.75 -1.49.75 -149.75 - 1 4 8 .91 -148.91 -149.75 -149.75 -148.91 -149.75 -149.75 - 1 4 8 .91 -148.08 -148.08 -148.91 -148.91 -148.91 -150.58 - 1 5 0 .58 -151.41 -152.24 - 1 5 2 .24 -153.08 -151.41 - 1 5 2 .24 - 1 5 2 .24 -153.91 -152.24 -154.74 -152.24 -152.24 -151.41 -151.41 -150.58  DATE  J20 J20 J20 J20 J20 J20 J 2G J20 J20 J20 J20 J20 J 20 J20 J20 J20 J20 J20 J20 J20 J 20 J20 J20 J20 J20 J20 J20 J 20 J20 J20 J20 J20 J 2G J20 J20 J20 J20 J20 J20 J20 J20 J20 J20 J20 J20 J20 J20 J20  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  0000 3 0 ICC 130 200 230 30 0 330 400 43 0 500 530 6C0 630 700 730 800 830 900 93 0 1000 1030 1 1 CO  317.81 3 1 8 .56 318.56 318.56 318.56 3 2 0 .82 321.57 322.32 323.07 323.07 323.82 324.57 324.57 324.57 324.57 323.82 323.82 323.82 3 23.8 2 32 3.07 323.82 323.82 323.82 323.82 323.82 323.07 323.07 3 2 2.32 322.32 321.57 321.57 3 23.07 323.82 3 24.57 325 .33 324.57 326.83 3 28.3 3 3 2 9 .84 3 3 3.59 337.35 3 3 8 .86 340.36 340.36 341.11 340 . 36 343.37 34 4.12  -228.30 -228.30 -227.48 -227.48 -228.30 -228.30 -229.12 -228.30 -229.12 -229.12 -229.12 -229.94 -229.94 -230.75 -230.75 -229.94 -229.94 - 2 3 0 . 75 -231.57 -230.75 -230.75 - 2 3 1 .57 - 2 3 2 .39 -232 .39 - 2 3 2 .39 - 2 3 2 .39 -234.02 -234.84 -233.20 -232.39 - 2 3 4 . 84 -234.84 -236.47 -238.10 -237.29 -237.29 -238.10 -241.37 - 2 4 2 .19 - 2 4 3 .82 - 2 4 5 . 45 -246.27 - 2 4 8 .72 -248.72 -247.91 - 2 4 7 .09 -247.09 -246,27  -201.77 -201.77 -201.77 -200.94 -200.94 -201.77 -202.61 -201.77 -201.77 -203.4 5 -202.61 -203.45 -203.45 -205.12 - 2 0 4 .29 -203.45 -203.45 -204.29 -204.29 -205.12 -206.80 -205.96 -206.80 -206.80 -207.22 -207.22 -206.80 -207.64 -206 .80 -205.96 -206.80 -207.64 -207.64 -209.31 -210.15 -209.31 -210.98 -211.82 -213.50 -215.17 -215.17 -216.84 -217.68 -216.84 -216.84 -216.01 -216.01 -216.01  -161.34 -161.34 -161.34 - 1 6 2 . 14 -161.34 - 1 6 2 . 14 -160.54 -161.34 -162.14 -.162.14 -162.93 -162.93 -162.93 -162.93 - 1 6 2 . 14 -162.93 -163 .73 -163.73 -163.73 -162.93 -163,73  1130 1200 1230 1300 1330 1400 143 0 1500 1530 16CG 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  - 164.53 -165.33 -164.53 -163.7 3 - 163.33 -163.73 - 1 6 2 . 9 3' -161.34 -162.14 -162.93 - 1 6 2 . 14 -162.9 3 -162.93 - 163.7 3 -163.73 -163.73 -163.73 -163.73 -166.12 -166.92 -166.12 - 1 6 6 .9 2 -168.52 - 166.92 -166.12 - 1 6 6 . 12 -166.12  -149.75 -149.75 -149.75 -149.75 -150.58 -150.58 -149.75 -150.58 -150.58 -150.58 -150.5 8 -150.58 -1.50.58 - 1 5 1 .41 -150.5 8 -151.41 - 1 5 0 .58 -151.41 -151.41 - 1 5 1 .41 -150.58 -151.41 -152.24 - 1 5 2 .24 -150.58 -150.41 -149.75 -150.58 -149.75 -148.91 -149.75 -148.91 -148.91 -151.41 -149.75 - 150.58 -148.91 -151.41 -152.24 -152.24 -154.74 -155.58 -155.58 -1.54.74 -155.58 -153.08 -153.91 -153.08  DATE  J21 J21 J2L J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J 21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21 J21  TIME (HOURS )  30 CM DEPTH  6 0 CM DEPTH  90 CM DEPTH  1 2 0 CM DEPTH  OOGO 30 100 130 200 230 300 330 400 430 500 530 600 630 700 730 8C0 830 900 93 0 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 18C0 1830 1900 1930 2000 2030 2100 2130 2200 22 30 23G0 2330  344.12 345.6 2 347 .13 347.13 347.88 3 4 7 .88 347.88 347.88 347.88 347.88 348.63 348.63 3 5 0 .88 351.64 352.39 353.14 353.14  -247.09 -246.27 -247.09 -248.72 -247.91 -249.54 -248.72 -249.54 -248.72 - 2 4 9 .54 -249.54 -250.36 - 2 5 1 .17 -251.99 -252.81 -252.81 -252.81 -252.81 -252.81 -252.81 -253.62 -254.44 - 2 5 5 .26 -256.07 -256.89 -256.89 -256.89 -257.71 -258.52 - 2 5 7 .71 -258.52 -256.07 -256.07 -256.07 -256.07 -259.34 -260.97 -260.97 -261.79 -261.79 -261.79 -261.79 -261.79 -262 .61 -262.61 -263.42 - 2 6 3 .42 -262.61  -216.01 -216.01 -216.01 -216.01 -216.01 -216 .01 -216.01 -216.01 -216.01 -216.01 -216.01 -216.84 -216.84 -218.52 -217.68 -218.52 -217.68 -217.6 8 -218.52 -220.19 -220.19 -221.03 -2 2 2 . 7 1 -222.71 -223.54 -222.71 -223.54 -222.71 -223.54 -223.54 -222.71 -221.03 -221.03 -2 21 . 8 7 -222.71 -224.38 -224.38 -224.38 -224.38 -224.38 -226.05 -224.38 -225.22 -224.38 -225.22 -224.38 -224.38 -224.38  -166.12 -165.33 -165. 33 -165.33 -165.33 - 1 6 5 . 33 -164.53 -164.53 -163.73 -164.53 -163.7 3 -164. 53 - 1 6 4 . 53 -165.3 3 -166.12 - 166.92 -166.92 -166.12 -165.33 -166.92 -166.92 -168. 52 -169.31 -169.31 -169.31 - 1 7 0 . 11 -170.11 -170.11 -170.9 1 -170.91 -169.31 -170.11 -169.31 -169.31 - 1 7 0 . 11 - 1 7 0 . 91 -170.91 -170.91 -170.91 -170.91 -171.71 -170.91 -170.91 -170.9 1 -170.11 -170.91 -171.71 - 1 7 0 . 11  35 3.89 353.89 355.39 355.39 355.39 356.90 358.40 358.40 359.15 358.40 359.15 360.66 3 5 9 .90 359.90 356.90 3 5 6 .90 356.90 356.15 356.90 359.15 360.66 360.66 3 6 0 .66 360.6 6 36 0.66 3 6 0 .66 361.41 361.41 362.16 362.16 362.91  -154.74 -152.24 -152.24 - 1 5 2 .24 -152.24 -151.41 -152.24 -151.41 -151.41 -151.41 - 1 5 1 .41 -151.41 -152.24 -152.24 - 1 5 2 .24 -153.08 -153.08 -153.08 -153.08 -154.74 -154.74 -154.74 -156.41 -157.24 -157.24 -158.07 -156.41 -157.24 -157.24 - 157.24 -155.58 -154.74 -154.74 -154.74 - 1 5 5 .58 -155.58 -157.24 -156.41 -156.41 -157.24 - 1 5 8 .07 -156.41 -157.24 -156.41 -156.41 -157.24 -156.41 -156.41  DATE  J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J 22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22 J22  TIME (HOURS) 0000 30 100 130 2C0 230 300 330 400 4 30 5 00 530 600 630 700 730 800 830 900 930 1000 .10 3 0 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2 330  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  12 0 CM DEPTH  3 6 2.9,1 362.91 362.16 3 6 2 .91 362.16 362.91 36 2.91 363.66 362.91  - 2 6 3 .42 -262.61 -262.61 -262.61 -261 .79 -262.61 -262.61 - 2 6 2 .61 -262.61 -263.42 -263.42 -265.88 -265.06 -265.88 -266.69 -267.51 -268.33 - 2 6 8 .33 -269.14 - 2 6 9 . 14 -269.14 -268.33 -269.14 -268.33 -268.33 -268.33 -268.33 -268.33 -265.88 -266.69 -268.33 -269.14 -269.96 - 2 6 9 .96 -270.78 -270.78 -271.59 -274.04 -277.31 - 2 7 8 .94 -278.94 -282.21 -283.85 -286.30 -285.48 - 2 8 7 . 11 -287.11 -286.30  -223.54 -222.71 -223.54 -222.71 -221.03 -221.87 -222.71 -222.71 -222.71 - 2 2 3 .54 -223.54 -223.54 -223.54 -223.54 -223.54 -224.38 -225.2 2 -225.22 -225.22 - 2 2 5 .22 - 2 2 6 .0 5 -225.22 -225.22 -224.38 -225.22 -225.22 -225.22 -225.22 -224.38 - 2 26 .0 5 -226.89 -226.89 -227.73 -228.57 -228.57 -230.24 -231.91 -232.75 -234.43 -235.26 -2 3 6 . 1 0 -236.94 -236.9 4 -239 .45 -240.29 -240.29 -240.29 -240.29  -170.11 -168.52 - 1 6 8 . 52 -168.52 -166.92 -167.72 -168.52 -168.5 2 -168.5 2 -169. 31 -168.52 -169.31 - 1 6 9 . 31 -16 9.31 -169 .31 - 1 7 0 . 11 - 170.91 -170.91 -170.91 - 170.91 -170.91 -170.11 -170.11 -169.31 -169.31 -169.31 - 1 6 9 . .31 -168.52 -168.52 - 1 6 8.5 2 -169.31 -169.31 -169.31 -168.52 -169.31 -169.31 -170.91 -170.91 -171.71 -170. 91 -171.71 -172.50 -176.49 -176.49 -175.69 -174.10 -174.9 0 -170.91  3 6 3 .66 364.41 365.17 365.92 3 6 6 .67 367.42 368.92 3 6 8 .92 369.68 370.43 370.4 3 370.43 369.68 369.68 368 .92 369.68 368.17 3 6 5 .92 366.67 3 6 5 . 17 364.41 365.17 365.92 365.17 3 6 5 .17 36 5.17 365.92 3 6 6 .67 368.17 367.42 368.92 370.43 371.18 372.68 3 7 6 .44 377.94 378.70 3 7 7 .94 378.70  -154.74 -153.91 -153.08 -153.08 -153.91 - 1 5 2 .24 -153.08 - 1 5 3 .08 -153.91 -153.91 -153.91 -154.74 -154.74 -154.74 -154.74 -155.5 8 -156.41 - 1 5 7 .24 -155.58 -157.24 -157.24 -154.74 -154.74 -152.24 - 1 5 3 .91 -153.08 -152.24 - 1 5 0 .58 -151.41 -151.41 -152.24 -152.24 - 1 5 2 .24 - 151.41 - 1 5 2 .24 - 1 5 2 .24 -154.74 -153.08 -155.58 -155.58 -158.07 -158.07 -158.07 -158.07 - 1 5 8 .91 -159.74 -158.07 -157.24  DATE  J23 J23 J23 J23 J2 3 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J23 J 23 J23 J23 J23 J23 J23 J23 J2 3 J23 J23 J23 J23  TIME (HOURS)  3 0 CM . DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  0000 30 100 130 200 230 300 33 0 400 430 500 530 600 630 700 730 800 830 9GC 930 1000 1030 1100 1130 1200 1230 1300 1330 140 0 1430 1500 1530 1600 1630 1700 1730 1800 1330 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  •378.70 377.94 •378.70 •378. 70 3 7 8 .70 380.20 380.95 380.20 381.70 382.45 383.96 383.21 383.21 •383.96 383.96 383.96 383.96 384.71 384.71 3 83.96 383.96 382.45 383.21 383.21 380.20 379.45 378.70 378.70 3 78.70 377.94 3 7 7 .94 378.70 378.70 378.70  -286.30 -2 8 7 . 1 1 -287.11 -287.11 -287.11 -287.93 -288.75 -287.93 -290.38 -292.01 -292.83 - 2 9 2 .83 -292.83 -292.83 - 2 9 3 .65 -293.65 -294.46 -294.46 -2 9 4 . 4 6 -295.28 -294.46 -2 9 3 . 6 5 -295.28 -295.28 -294.46 -2 9 4 . 4 6 -294.46 -295.28 -294.46 -294.46 -294.46 -2 9 4 . 4 6 -294.46 - 2 9 5 .28 - 2 9 5 .28 -295.28 -294.46 -294.46 -293.65 - 2 9 6 . 10 -296.10 - 3 0 1 .00 -303.45 -305.90 - 3 0 9 .17 -310.80 -314.88 -313.25  -2 3 8 . 6 1 -238.61 -239.45 - 2 3 8 .61 -238.61 -239.45 -240.29 -239.45 -240.29 -240.29 -241.12 -241.12 -241.12 -241.12 -242.80 -241.96 -242.80 -242.80 -242.80 -245.31 -243.64 -242.80 -245.31 -2 4 5 . 3 1 -243.64 -244.47 -2 4 3 . 6 4 -243.6 4 -243.64 -243.64 - 2 4 3 .64 -244.47 -243.64 -243.64 -2 4 3 . 6 4 -243.64 -244.47 -243.64 -244.47 -251.17 -251.17 - 2 5 6 . 19 -257.03 - 2 5 7 .87 -258.71 -259.54 -262.06 -261.22  -170.91 -170.91 -170.11 -170.11 -170.91 -170.91 -170. 91 - 1 7 0 . 91 -170.91 - 1 7 1 . 71 -171.71 -171.71 -170.91 -171.71 -172.50 -172.50 -174. 90 -172.50 -174.10 -176.49 -176.49 - 176.49 -177.29 -177.2 9 -176.49 -177.29 -175. 69 -172.50 -172.50 - 1 7 1 . 71 -171.71 -172.50 -172.50 -172.50 -171.71 -171.71 -172.50 -172.50 -170.91 -170.11 -170.91 -175.69 -176.49 -177.29 -178.09 -177.29 -178.09 -178.09  3 7 7 .94 378.70 378.70 3 7 8 .70 379.45 379.45 379.45 378.70 379.45 379.45 379.45 378.70 379.45 3 7 9 .45  -.156.41 -154.74 -154.74 -153.91 -153.08 - 1 5 3 .0 8 -153.08 -153.08 -153.91 -155.58 -154.74 -154.74 - 1 5 5 .58 -155.58 -156.41 -154.74 -158.07 -156.41 -157.24 -157.24 -157.24 -156.41 -156.41 -157.24 -154.74 -153.91 - 1 5 2 .24 -152.24 - 1 5 1 .41 -151.41 -151.41 -151.41 -152.24 -152.24 -151.41 - 1 5 1 .41 -152.2 4 -152.24 - 1 5 2 .24 - 1 5 2 .24 -152.24 -153.08 -153.0 8 -153.91 -156.41 -156.41 -158.91 -157.24  DATE  J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J24 J 24 J24 J24 J24 J24 J24 J24 J24  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CH DEPTH  1 2 0 CM DEPTH  0000 30 ICG 130 200 230 300 330 400 430 500 53 0 6C0 630 700 730 300 830 900 93 0 1000 1030 1 1 CO 1130 1200 1230 1300 1330 1400 1430 1500 153 0 16CQ 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  379.45 380.20 381.70 380.95 380.95 380.9 5 380.95 380.95 3 8 0 .9 5 381.70 380.95 380 .95 380.95 381.70 380.95 380.9 5 380.95 381.70 380 .95 380.95 3 81.70 38 1 .70 382.45 382.45 382.45 38 2.45 381.70 382.45 382.45 382.45 3 81.70 383.21 383.21 383.21 383.21 38 3.96 388.47 3 89.97 391.47 3 92.98 392.98 394.48 399.74 401.25 403.50 402.00 403.50 402.00  -319.79 -318.97 -321.42 -323.05 -323.05 -323.05 -325.50 -325.50 -325.50 -326.32 -326.32 -326.32 -326.32 -326.32 -326.32 - 3 2 6 .32 -327.14 -327.14 -327.14 -327.14 - 3 2 7 . 14 -327.95 -328.77 -328.77 - 3 3 1 .22 - 3 3 1 .22 -331.22 -331.22 - 3 3 1 .22 -332.85 -333.67 -335.30 -336.94 -33 8.57 -337.76 - 3 4 1 .84 -342.66 -342.66 -343.47 -345.92 -347.56 -347.56 -350.01 -350.01 - 3 5 1 .64 -350.82 -351.64 -350.82  -262.06 -262.89 -264.57 -264.57 -266.24 -266.24 -266.24 -266.24 -267 .92 -268.75 -268.75 -269.59 -269.59 -270.43 -2 69 .59 -269.59 -269.59 -270.43 -270.43 -272 .94 -272.94 -273.78 -273.78 -273.78 -274.61 -274.61 -273.78 -275.45 -275.45 -277.13 -277.13 - 2 7 7 .9 6 -278.80 -280.47 -281.31 -282. . 9 9 -282.99 -284.66 -288 .85 -289.68 -290.52 -290.52 -293.03 -291.36 -291.36 -291.36 -290.52 -290.52  -178.09 -178.09 -178.88 -178.88 -.178. 88 -178.88 -178.88 - 1 7 8 . 88 -178.09 -178.09 -178.88 - 178.88 -178.09 -178.09 - 1 7 8 . 88 -178.09 -178.88 -178.09 -178.88 -178.88 -178.88 - 1 7 8. 8 8 -178.88 -179.68 - 179.68 - 180.48 -179.68 -182.07 -181.28 -181.28 -182.07 -182.07 -.181.28 -181.28 -182.07 -182.07 -182.87 -182.07 -182.07 -182.07 -183.67 - 184.4 7 -186.06 - I 84.47 -182.87 -179.68 -180.48 -178.88  -158.07 -158.91 -158.91 - 1 5 8 .91 -158.91 -158.91 -159.74 -157.24 -158.07 -157.24 -158.07 -157.24 -158.07 - 1 5 8 .07 -154.74 -156.41 -156.41. -153.91. -154.74 -157.24 -155.58 -158.07 -159.74 - 1 5 9 .74 -159.74 -161.41 -163.07 -162.24 -163.07 - 1 6 1 .41 -160.57 -163.07 -163.07 -164.74 -164.74 -163.90 -162.24 -163.07 -163.07 -163.0 7 -161.41 -161.41 - 1 6 3 .07 - 1 6 1 .41 -160.57 -158.91 -159.74 -158.91  DATE  J25 J25 J2 5 J25 J25 J25 J25 J25 J25 J25 J25 J25 J2 5 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J 25 J 25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25 J25  TIME {HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  OOGO 30 100 130 200 230 300 330 400 430 500 530 600 63 0 700 730 800 830 900 930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 1900 1930 20G0 2030 2100 2130 2200 2230 2300 2330  402.00 402.00 4 0 5 .76 406.51 406.51 4 0 7 .26 408.01 408.76 411.02 411.77 414.78 415.53 4 1 7 .0 3 420.79 421.54 422.29 423.04 4 24.55 4 26.05 4 2 9 .8 1 432.06 -57.73 -53.97 -55.47 -6 2.24 -67.50 -71.26 -52.47 -50.21 -48.71 -50.21 -51.72 -53.22 -50.21 -47.96 -51.72 -53.97 -59.23 -59.98 -59.98 -55.47 -56.23 - 5 9 .98 -60.74 -51.72 - 5 3 .97 -56.23 -51.72  -350.82 -350.01 - 3 5 1 .64 -352.46 -352.46 -354.09 -358.18 -358.99 -358.99 -359.81 -359.81 -360.63 -361.44 -363.89 -363.89 -363.89 -365.53 -367.98 - 3 6 7 . 98 -373.70 -376.15 - 3 7 6 . 15 -375.33 -375.33 -3 7 5 . 3 3 -375.33 -375.33 -373.70 -374.51 -375.33 -375.33 -374.51 -376.15 -376.15 -375.33 -376.96 -376.96 -378.60 -376.96 -377.78 -378.60 -377.78 -380.23 -3 8 0 . 2 3 -3 7 7 . 7 8 -376.96 -376.96 -377.78  -290.52 -290.52 -290.52 -291.36 -290.52 -291.36 -291.36 -292.20 -292 .20 - 2 9 3 .03 -292.20 -293.87 -295.54 -295.54 -295.54 -295.54 -291.36 -291.36 -282 .99 - 2 7 3 .80 -276.29 -274.61 -273.78 -266.24 -262 .06 -260.38 -258.71 -258.71 -2 5 7 . 0 3 -257.03 -257.03 -257.03 -257.03 -257.03 -257.03 -258.71 -257.87 -259.54 - 2 5 8 .71 -258 .71 -257.87 -258.71 -260.38 -258.71 -258.71 -258 .71 -258.71 -258.71  -178.88 - 1 7 8 . 88 - 1 7 8 . 88 -179.68 -178.88 -181.28 -181.28 -186.06 -183.67 -183.67 -183.67 -186.06 -185.26 -186.06 -186.06 - 1 8 6 . 86 -190.05 -191.64 -192.44 -194.83 -195.63 -196.43 - 196.43 -194.83 -194.04 - 1 9 4 . 83 - 194.04 -194.04 -193.24 - 194.04 -193.24 -192.44 - 1 9 4 . 04 -193.24 -194.83 -196.43 - 194.83 -198.02 -195.63 -197.23 -195 .63 -196. 43 - 197.23 -195.63 -195. 63 - 194.83 -194.83 -194.83  - 1 5 8 .07 -157.24 -158.91 -158.91 -158.91 -158.91 -160.57 - 1 5 9 .74 -161.41 -161.41 -163.07 -163.90 -165.57 -165.57 -165.57 -165.57 -166.40 - 1 6 7 .24 -168.07 -168.90 - 1 6 8 .90 -168.90 -171.40 -168.90 -167.24 -168.07 -166.40 - 1 6 8 .07 -168.07 -167.24 - 1 6 8 .07 -167.24 -168.07 - 1 6 8 .07 -169.73 -169.73 -168.90 - 1 6 8 .90 -168.90 -174.73 -171.40 -173.07 -173.90 - 1 7 1 .40 -168.07 -168.07 -168.07 - 1 6 8 .07  DATE  J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26 J26  TIME (HOURS) OOOO 30 100 130 200 2 30 300 330 400 430 5 00 530 600 630 700 730 . 800 830 900 930 1000 1030 1100 1130 1200 1230 1300 133 0 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  30 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  12 0 CM DEPTH  1 5 0 CM DEPTH  -71.26 -52.47 -47.21 -48 .71 -54.72 -62.24 - 6 2 .24 -47.21 -53.22 -5 3.22 - 4 5 .70 -45.70 -47.21 -42.70 -45.70 -48.71 -5 0 .96 -58.48 - 6 4 . 49 -65.25 -53.22 - 5 9 . 98 -60.74 -55.47 -62.24 -67.50 - 6 5 .25 -67.50 -72.76 -75.02 - 7 5 .77 -75.7 7 -75.77 -77.27 -77.2 7 -75.7 7 - 7 8 .78 -78.78 - 8 1 . 78 -84.04 -8 3 . 2 9 -84.04 -83.29 - 8 7 .80 -89.30 -90.80 -90 .05 -84.79  -377.78 -376.96 -376.96 -376.96 -376.15 - 3 7 6 . 15 -376.15 -376.15 -376.15 -376.15 - 3 7 5 .33 -375.33 -375.33 -373.70 -375.33 -375.33 -375.33 -375.33 -376.15 -375.33 - 3 7 2 .06 -361.44 - 3 51. 64 -335.30 -314.88 -279.76 - 2 4 1 .37 -198.08 -170.31 -146.62 - 1 3 0 .28 -118.85 - 114.76 -113.13 -108.23 -105.78 -105.78 -104.96 -104.96 -106.60 -104.96 -103.33 - 1 0 2 . 51 -108.23 -107.41 -108.23 -10 7.41 -104.96  -258 .71 -258.71 -257.87 -257.03 -257.0 3 -2 5 7 . 0 3 -257.03 -257 .03 -257.03 -2 5 7 . 0 3 -256.19 -255.36 -253.68 -253.68 -253.68 -249.50 -247 .82 -241.96 -238.61 - 2 2 8 .57 -217.68 -211.82 -203.45 -191.73 -182.52 -165.77 -149.03 -141.49 -136.47 -132.28 -130.61 -127.26 -127.26 -125.59 -126.42 -123.91 -123.91 -123.07 -124.75 -128.10 -125.59 -124.75 -123.91 -129.77 -130.61 -129.77 -128 .93 -126.42  -194.83 -194.83 -194. 83 -193.24 -193.24 -190.05 -190.85 -190.85 -186.86 -187.66 -187.66 - 1 8 6 .86 - 1 8 8 . 45 - 186.86 -18 7.66 -187.66 -192.44 -194.04 -1.95.63 -197.23 -198.02 -202 .81 -206.00 -202.81 -202.81 -209.19 -209.19 -209.19 -206.00 -201.21 -198.02 -195.63 - 1 9 4 . 83 -194.83 -196.43 -190.85 -190.C5 -189.25 -191.64 -193.24 -190.05 -187.66 -188.45 - 191.64 -188.45 -190.05 - 186.86 -182.87  - 168.07 - 1 6 7 .24 -166.40 -166.40 -166.40 -166.40 -164.74 -164.74 -163.90 -164.74 -165.57 -164.74 -164.74 -163.07 - 1 6 4 .74 -163.90 -168.07 -168.07 - 1 7 1 .40 -174.73 -175.56 -175.56 -178.06 -179,73 - 1 7 8 .06 -179.73 -183.06 -.181.39 - 1 7 8 .90 -175.56 - 175.56 -173.90 -173.07 -168.90 - 1 7 1 .40 -166.40 -166.40 -165.57 - 1 6 8 .07 -169.73 -166.40 -165.5 7 -168.90 -169.73 - 1 6 8 .07 -169.73 -168.90 -166.40  DATE  J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J 27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27 J27  TIME (HOURS)  3 0 CM DEPTH  OOOO 30 100 130 200 230 300 33 0 400 430 500 530 60 0 630 700 730 800 83 0 900 930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 19GC 1930 2000 2030 2100 2130 2200 2230 2300 2 33 0  -84.79 -84.04 -86.29 -88.55 -88.55 - 7 6 . 52 -46.4 5 - 5 1 .7 2 -50.96 -57.73 - 5 9 .98 -64.49 - 6 6 . GO -69.76 - 6 9 .00 -68.25 -72.76 -72.76 -72.76 -74.27 -75.02 -75.77 -75.77 -76.52 -77.27 -77.27 -78.02 - 7 8 .78 -78.02 -77.27 - 8 0 .28 -80.28 -81.03 -82.53 -84.79 -86.29 -87.04 -85.54 -87.04 -84.79 - 8 8 .55 -90.05 -90.80 -90.80 - 9 0 .80 -90.80 - 8 9 . 30 -89.30  6 0 CM DEPTH -104.14 -101.69 -104.96 -103.33 -103.33 -103.33 - 104.14 -105.78 -100.88 -102.51 -102.51 -102.51 -100.88 -99.24 -97.61 -95.98 -97.61 -96.79 -97.61 -96.79 -97.61 - 9 5 .16 - 9 5 . 16 -95.98 -95.16 -94.34 - 9 1 . 89 -95.16 -92.71 -93.53 -93.53 -94.34 - 92 . 7 1 -95.16 -97.61 -99.24 -100.06 -99.24 -99.24 -97.61 -100 .06 -100.83 -102.51 -100.88 -101.69 -101.29 -99.24 -100.06  90 CH DEPTH - 1 2 6 .42 - 1 2 6 .42 - 1 2 6 .42 - 1 2 4 .75 - 1 2 5 . 59 -124 .75 -125.59 -127 .26 - 1 2 4 .75 - 1 2 5 . 59 - 1 2 6 .42 - 1 2 6 .42 - 1 2 5 . 59 - 1 2 5 .59 - 1 2 4 .75 - 1 2 3 .07 - 1 2 3 .07 - 1 2 2 .24 -122 .24 - 1 2 0 . 56 - 1 2 2 .24 - 1 2 1 .40 - 1 2 2 .24 - 1 2 2 .24 - 1 1 9 .72 -120 . 56 -118 . 89 -118 .05 -117 .21 - 1 1 8 .05 - 117 . 2 1 - 1 1 9 .72 - 1 1 6 .38 - 1 1 8 .89 - 1 2 0 .56 - 1 2 3 .07 - 1 2 2 .24 - 1 2 3 .07 -122 .24 - 1 2 1 .40 -123.07 - 1 2 3 .07 - 1 2 3 .91 - 1 2 3 .07 - 1 2 4 .75 - 1 2 3 .91 - 1 2 3 .07 - 1 2 1 .40  1 2 0 CM DEPTH  1 5 0 CM DEPTH  -182.87 -182.87 -178.88 -176.49 -178.09 -174.90 -174.90 -173.30 -.1.71 . 7 1 -171.71 -170.91 -172.50 -170.91 -170.11 -169.31 -166.92 -168.52 -169.31 -167.72 -166.12 -166.12 -.164.53 -164.53 -166.92 -162.14 -162.93 - 1 6 0 . 54 -160.5 4 -156.55 -.156. 5 5 -154.96 -154.96 -147.78 -156.55 -154.96 -156.55 - 1 5 4 . .96 -155.76 -152.57 - 1 5 0. 9 7 - 1 5 4 . 16 -153.36 -151.77 -152.57 -150.97 -150.17 - 1 4 7 . 78 -147.7 8  -166.40 -165.57 - 1 6 3 .07 -161.41 -163.07 -163.07 -163.07 -161.41 - 1 6 2 .24 - 1 6 2 .24 -161.41 -163.90 - 1 6 2 .24 -163.90 - 163.07 -161.41 -163.07 -163.90 -163.07 -163.07 -162.24 -162.24 - 1 6 0 .57 -163.90 -160.57 - 1 6 0 .57 -158.91 -159.74 -157.24 -158.07 -158.07 -158.07 -155.58 -158.91 -158.91 -161.41 -159.74 -160.57 -159.74 -159.74 -161.41 -159.74 - 1 6 0 .57 -160.57 - 159.74 -159.74 -158.91 -155.58  DATE  J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28 J28  TIME (HOURS)  30 CM DEPTH  6 0 CM DEPTH  OOOO 0030 0100 0130 0200 0230 0300 0330 0400 0430 0500 0530 0600 0630 0700 0730 0800 0830 0900 0930 1000 1030  -86.29 -86.29 -86.29 -84.79 -84.79 -84.04 - 8 4 . 79 -84.04 - 8 5 .54 -86.29 -87.04 - 8 7 .80 -87.80 - 8 7 . 80 -90.80 -90 .05 - 9 1 . 55 -90.05 -9 3 . 8 1 -93.06 -93.81 -95.31 -96.06 - 9 6 . 06 -96.06 -95.31 - 9 6 . 06 -96.06 -95.31 -93.81 -93.81 -95.31 -95.31 -96. 06 -95.31 -97.57 - 9 6 . 06 -96.82 - 9 7 .57 -98.32 -98.32 - 9 9 .8 2 -99.82 -101.33 -102.8 3 -102.83 - 1 0 2 . 33 - 102.83  -96.79 -97.61 -97.61 - 9 5 . 16 - 9 5 .16 -94.34 -95,16 -94.34 -96.79 -97.61 -96.79 -97.61 -97.61 -97.61 -100.88 -99.24 -ICC.06 - 100.06 -104.96 -104.96 -104.14 -104.14 -105.78 -106.60 -105.78 - 1 0 3 .33 -103.33 -104.14 -102.51 -100.88 -100.06 -102.51 -103.33 -102.51 -100.88 -103.33 -103.33 -103.33 -104.14 -104.14 -105.78 -105.78 -106.60 -109.05  1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 18CG 1830 1900 193 0 2000 2030 2100 2130 2200 2230 2300 2330  -108.23 -108.23 -107.41 -107.41  9 0 CM DEPTH - 1 2 0 . 56 - 1 2 0 .56 -120 .56 - 1 1 7 .21 - 1 17 .2.1 - 1 1 6 .38 - 1 1 7 .21 - 1 1 6 .38 -118 .05 -118 .05 -118.89 - 1 1 8 .89 -119 .72 -120 .56 - 1 2 3 .07 - 1 2 3 .07 - 1 2 2 .24 - 1 2 3 .91 - 1 2 6 .42 - 1 2 5 . 59 - 1 2 6 . 42 - 1 2 6 .42 - 1 2 6 .42 - 1 2 9 .77 - 1 2 8 . 10 - 1 2 4 .75 -124 .75 -124 .75 - 1 2 4 .7 5 - 1 2 3 .91 - 1 2 3 .91 - 1 2 3 .91 - 1 2 5 . 59 - 1 2 3 .07 - 1 2 4 .75 - 1 2 4 .7 5 -125 .59 -124 . 75 -124.75 -124 .75 - 1 2 5 . 59 - 1 2 5 . 59 - 1 2 7 .26 -128 .10 -128 .93 - 1 2 8 . 10 -128 .93 - 1 2 7 .26  1 2 0 CM DEPTH -143.79 -143.79 -142.20 -142.20 -139.8 0 -139.01 -139.01 -138.21 -139.01 -139.01 -139.01 - 139.Cl -139.80 -139.80 - 1 4 2 . 20 - 1 4 2 . 20 -140.60 -142.99 -145.39 -143.79 -144.59 -143.79 -145.39 -146.18 - 143.79 -142.20 -142.20 -139. 80 -139.01 -139.80 - 1 3 9 . 01 - 1.38. 2 1 -139.80 -137.4 1 -139.01 -139.01 -139.80 - 1 3 8 . 21 -139.Cl -139.01 -139.80 - 140.6G -140.60 -142.20 -141.40 - 142.99 -142.20 . - 1 3 9 . 01  1 5 0 CM DEPTH - 1 5 2 .24 -153.08 -151.41 - 1 5 1 .41 -149.75 -149.75 -149.75 -149.75 -148.91 - 1 4 8 .91 -149.75 -148.91 - 1 4 9 .75 - 1 5 0 .58 -152.24 -153.08 -151.41 -153.91 - 154.74 - 1 5 2 .24 -153.91 -153.91 -153.08 -153.91 -152.24 -151.41 - 1 5 0 .58 -148.91 -148.91 -148.91 -148.91 -148.91 -148.91 -146.41 -148.08 - 146.41 - 1 4 8 .91 -144.75 -148.08 - 1 4 8 .08 -148.08 -149.75 - 1 4 9 .75 - 1 5 0 .58 -149.75 - 149.75 - 1 5 0 .58 -148.08  DATE  J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J29 J2 9 J29 J 29 J29 J29 J29 J29 J29 J29  TIME (HOURS)  OOOO 0030 0100 0130 0200 0230 03C0 0330 0400 0430 0500 0530 0600 0630 0700 0 730  O8C0 0830 0900 0930 1OG0 1030 1100 113 0 1200 1230 13C0 1330 1400 1430 1500 1530 1600 1630 1700 1730 18G0 1830 1900 1930 2000 2030 2100 2130 2200 2230 23G0 2330  30  CM DEPTH 102.08 101.33 101.33 -99.82 101.33 -99.82 -99.82 101.33 101.33 100 .57 -99.82 -99.82 101.33 102.08 102.83 102.83 102.08 105.84• 105.84 108 .09 108.84 110.35 110 .35 110.35 114.10 113.35 111.10 108.09 113.35 110.35 112.60 113.35 107.34 106.59 110.35 -70.51 -75.02 -71.2 6 -71.26 -71.26 -72.01 -69.76 - 6 9 .00 -70.51 -70.51 - 6 9 .76 -69.00 -69.00  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  -107.41 - 106.60 - 1 0 7.41 -105.78 -106.60 - 1 0 5 .78 -106.60 -107.41 -107.41 -105.78 -107.41  -126.42 -125.59 -126.42 -125.59 -125.59 -125.59 -125.59 -125.59 -126.42 -125.59 -125.59 -125.59 -125.59 -128.10 -130.61 -128.93 -131.45 -131.45 -133.12 -137.31 -138.98 -137.31 -139.82 -138.98 -141.49 -138.98 - 1 3 8 .98 -137.31 -139.82 -139.82 -141.49 -142.33 -141.49 -140.6 6 -147.35 -144.84 -141.49 -140.66 - 1 3 9 .82 - 1 3 9 .8 2 -138.98 -138.14 -133.96 -133.96 -133.96 -134.79 -132.28 -130.61  -139.01 - 1 3 9 . 80 -139.C1 -139.80 -139.80 -139.Cl -139.01 -139.80 - 1 3 9.0 1 -139.01 -138.21 - 1 3 8 . 21 -139.Cl -139.80 -140.60 -141.40 -141.40 -142.99 -144.59 -147.78 -148.58 -148.58 -14 8.58 -151.77 -148.58 -150.97 -150.17 -149.33 -154.16 -148.5 8 -151.77 -147.78 -151.77 -152.57 -160.54 -156.55 -152.57 -150.97 -154.16 -.150. 17 -148.58 -.150. 97 -147.78 -148.58 -147. 78 - 149. 3 8 -147.78 -144.59  - 105.78 -106.60 -109.05 -109.05 -108.23 -110.68 - 1 1 3 . 13 -113.95 - 1 1 5 .58 -117.21 -114.76 -118.85 -117.21 - 1 2 0.48 - 1 2 1 .30 - 1 2 1 .30 -117.21 -122.11 -119.66 -121.30 - 122.93 -120.48 - 1 2 1 .30 -124.57 -125.38 -122.11 -117.21 -116.40 -113.95 -113.95 - 109.05 -105.78 -106.60 -104.96 -104.14 -100.88 -98.43  -147.25 -146.41 -144.75 -147.25 -145.58 -144.75 -144.75 -144.75 -144.75 -143.92 -143.92 -145.58 -145.58 -147.2 5 -149.75 -148.91 -149.75 - 1 5 0 .5 8 -151.41 - 154.74 -156.41 -154.74 -155.58 -157.24 -158.07 -158.07 -157.24 -157.24 -159.74 -158.07 -159.74 -160.57 -158.07 -159.74 -163.07 -161.41 -158.07 - 1 5 8 .07 -156.41 - 157.24 -154.74 -155.58 -152.24 -154.74 -151.41 -153.91 -152.24 - 1 5 0 .58  DATE  J30 J30 J 30 J30 J30 J30 J30 J30 J30 J30 J30 J3G J30 J30 J30 J 30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30 J30  TIME (HOURS)  3 0 CM DEPTH  0000 0030 0100 0130 0200 0230 0300 0330 0400 0430 0500 0530 0600 0630 0700 0730 0000 0830 0900 0930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 17GG 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  -68.25 -66.75 -65.25 -66 .75 -67.50 -66.CO - 6 6 .00 -67.50 -68.25 -68.25 -68.25 - 7 0 . 51 -71.26 - 7 5 .02 -75.02 -7 3.51 - 7 7 .27 -76.52 -77.27 -78.02 -80 .23 -78.02 - 7 7 . 27 - 7 7 .27 -76.52 -77.27 -77.27 -76.52 - 7 6 . 52 -79.53 -82.53 -84.79 -87.04 -88 .55 -89.30 -90.80 -90 .80 -89.30 -90.05 -91.55 - 9 0 .80 - 9 1 . 55 -92.31 -91.55 -92.31 -93.06 -91.55 -90.80  6 0 CM DEPTH  9 0 CH DEPTH  - 9 5 .98 -128 .93 -95.16 -127.2 6 -94.34 -124.75 -123.91 -93.53 -93.53 -123.07 -122.24 -92.71 -91 .89 -122.24 - 9 1 .89 -123.91 -91.08 -120.56 -122.24 -92.71 -120.56 -91.08 -91.08 -121.40 -91.89 -121.40 -122.24 -95.98 -97.61 -123.91 -95.98 ' -123.91 -96.79 -123.91 -98.43 -125.59 -98.43 -123.91 - 1 2 5 .59 - 9 9 .24 -98.43 -124.75 -96.79 -123.91 - 9 5 . 16 -123.07 -95.98 -121.40 -93 .53 -119.72 -94.34 -119.72 -94.34 -117 .21 -94.34 -120.56 -91.89 -118.05 -94.34 - 1 2 0 .56 -99.24 -123.91 -129.77 -103.33 - 1 0 4 . 14 -128.93 -102.51 -128 .10 -104.96 -129.77 - 105.78 -128.93 - 1 2 8 .9 3 -105.78 -104.96 -128.93 -104.96 -128 .10 -105.78 - 1 2 8 . 10 -10 4.14 -126.42 -104.96 -129.77 -106.60 -130.61 -106.60 -131 .45 -107.41 -131.45 - 1 0 8 . 23 -132 . 2 8 -130.61 - 1 0 5 .78 -104.96 -127.26  1 2 0 CM DEPTH  1 5 0 CM DEPTH  -142.99 -139.80 -140. 60 -140.60 -140.60 -139.80 - 1 3 9 . 01 -143.79 -139.01 -141.40 -139.80 -140.60 -142.99 - 142.9 9 -143.79 -146.18 - 144.59 -146.18 -146.18 - 1 4 8 . 58 -145.39 -144.59 -142.20 -140.60 -140.60 - 1 3 9 . 80 -139. 80 -139.80 -.1.3 9. 8 0 -140.60 -146.18 -147.78 -148.58 -147.7 8 -148.58 - 1 4 8 . 58 -148.5 8 -14 8.58 -147.7 8 -149.38 -147.7 8 -148.58 -149.3 8 -151.77 -150.97 - 1 4 8 . 58 -146.18 -145.39  - 149.75 -148.91 -146.41 -145.58 -146.41 -143.92 -143.08 -146.41 -146.41 -143.08 -143.08 -145.58 -147.2 5 -146.41 -149.75 -150.58 -150.58 - 1 5 1 .41 -151.41 -153.08 - 151.41 -149.75 -149.75 -147.25 - 1 4 8 .08 -144.75 -144.75 -146.41 -143.92 -150.58 - 150.58 -153.91 -155.5 8 -153.08 -156.41 -154.74 - 154.74 -153.08 - 1 5 3 .08 -153.08 -153.08 - 1 5 5 .58 -157.24 -158.07 -.160 . 5 7 -158.91 -152.24 - 1 5 2 .24  DATE  J31 J31 J31 J31 J31 J31 J31 J31 J31 ' J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31 J31  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  90 CH DEPTH  1 2 0 CM DEPTH  0000 0030 0100 0130 02 0 0 0230 0300 0330  -89.30 -86.29 - 8 7 . 80 -85.54 - 8 6 .29 -84.79 -84.79 -84.79 -84.79 -84.79 -84.79 -86.29 - 8 7 . 80 -89.30 -9 2 . 3 1 -91.55 - 9 2 . 31 -9 2 . 3 1 -91.5 5 -93.06 -93.06 -91.55 - 9 2 . 31 -93.81 -93.81 -93.06 -96.06 -95.31 -98.32 -96.82 -93.06 -93.06 -93.06 -96.06 - 9 9 .07 -99.07 -99.82 1 0 0 .57 ICO.57 1G0.57 100.57 101.33 104.3 3 102.83 104.33 103.58 102.83 100.57  -104.14 -102.51 -100.88 -99.24 -100.88 -100.06 - 9 9 . 24 -97.61 -99.24 -98.43 -98.43 -98.43 -103.33 - 1 0 2 .51 - 1 0 4 .96 -104.14 - 1 0 4 . 14 -104.96 -104.14 -104.96 -105.78 -104.96 -103.33 -105.78 -106.60 -103.33 -105.78 -10 2 . 5 1 -105.78 -106.60 -104.96 -100.88 -1G0.06 -103.33 - 1 0 4 .14 -104.96 -107.41 -107.41 -108.23 -107.41 -105.78 -106.60 -110.68 -109.86 -112 .31 -109.86 -109.86 -105.78  -126.42 -124.75 -124.75 - 1 2 3 .0 7 -123.91 -123.91 -123.91 -121.40 -.123.07 -123,0 7 -122.24 -121.40 -124.75 -125.59 -129.77 -128.10 -126.42 -127.26 -127.26 -127.26 - 1 2 9 .77 -126.42 -126.42 -128.10 -130 . 61 -130.61 -130.61 -128.10 -126.42 -128.10 -124.75 -123.91 -123.91 -127.26 -127 .26 -128.93 -130.61 -128.93 -129.77 -128.93 -128.93 -128.93 -130.61 -132.28 -133.96 -128.93 -130.61 -127.26  -142.20 -140.60 -142.20 -139.80 -140.60 -138.21 - 1 3 9 . 80 - 1 3 8.21 -137.41 -138.21 -139.80 -137.41 -139.01 -140.60 -142.99 -144.59 -142.20 -140.60 -142.99 -146.18 -142.20 -144.59 -143.79 -142.99 -145.39 -141.40 - 1 4 6 . 18 -141.40 - 1 4 1 .40 -143.79 - 1 3 9 . 80 -139.80 -139.01 -140.60 -142.99 -142.99 -143.79 -142.99 -141.40 -141.40 - 142.99 -142.20 -144.59 -146.18 -147.78 -144.59 -142.99 -139.80  040 0 0430 0500 0530 0600 0 630 0700 073 0 0 800 083 0 090 0 0930 1000 1030  1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 19G0 1930 2000 203 0 210 0 2130 2200 2230 2300 2 33 0  -150.5 8 -146.41 -147.25 -144.75 -148.08 - 1 4 7 .25 -144.75 -146.41 - 1 4 4 .75 - 1 4 3 .92 -146.41 -147.25 - 1 4 7 .25 -149.75 -153.08 - 1 5 2 .24 -152.24 -149.75 -149.75 -150.58 -148.91 -149.75 -1.49 . 7 5 -150.5 8 -150.58 -.148 .0 8 -151.41 -148.91 -144.75 -148.91 -144.75 -146.41 -143.92 -148.08 -151.41 -151.41 -149.75 -149.75 -148.91 -148.91 -149.75 -148.91 - 1 5 0 .58 -153.08 -150.58 -149.75 -149.75 -147.25  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A' A A A A  1 1 1 1 1 1 1 1 1 1 1  1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1  1 1 1 1 1 1 1  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  OOOQ 0030 0100 0130 0200 0230 0 300 0330 0400 0430 0500 0530 0600 0630 0 7(30 0 730 0800 0 830 0900 093 0 1000 1030 11CG 1130 1200 123 0 130 0 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 2 330  -102.08 - 1 0 1 .33 -99.07 -99,07 -99.07 -98.32 - 9 8 . 32 -98.32 - 9 7 .57 -97.57 -99.82 -98.32  - 1 0 5 . 78 -106.60 -104.14 -104.14 -104.14 -103.33 -104.14 - 1 0 4 . 14  -127.26 -127.26 -124.75 -124.75 -124.75  -139. 80 -139.01  -100.57 -99. 07 - I C O . 57 -100.57 -102.08 - 1 0 4 . 33 -105 .84 -108.84 -106.59 - 1 0 6 .59 -105.08 - 1 0 8 . 09 -105.84 - 1 0 5 .84 -104.33 - 104.33 -104.33 -105.84 -106.59 -103.58 -108.84 -108.84 -109.59 -111.10 -119.37 -112.60 -112.60 -111.10 -109.59 -111.85 -112.60 -113.35 -115.61 -116.36 -114.10 -111.85  -103.33 -103.33  - 10 3.33 -105.78 -105.78 -104.96 -105.78 -10 4.14 -108.23 -111.50 -111.50 -116.40 -114.76 -114.76 -110.68  -111.50 -.109.05 -109.05 -108.23 -109.05 -109.86 -109.05 -109.86 -109.05 -109.86 -109.86 -112.31 -114.76 -118.03 - 1 1 3 . 95 -113.95 -113.13 -114.76  -113.95 -114.76  -123.91 -124.75 -127.26 -125.59 - 1 2 3 .91 -124.75 -126 .42 -128.93 -126.42 -127.26 -125.59 -129.77 -132.28 -134.79 -137.31 -133.96 -134.79 -134.79 -134.79 -128 .93  -128.93 -128.93 -130.61 -129 .77 -133.96 -129.7 7 -128.93 -133.12 -130.61 -131.45 -132.28 -1 3 8 . 1 4 -134.79 - 133.12 -132.28 -134.79  -130.61 -133.96 -137.31  - .11 8 . 0 3 -137.31 -119.66 -133,96 -117.21 -114.76  -112.31  -133.96 -132.28  -139.80 -135.82 -13 7.41 -139.01 -137.41 - 1 3 8 . 21 -139.01  -138 .21 -137.41 -137.41  -139.01 -13 9.01 -139.01 -138.21 -143.79 -143.79 -14 7.78 -148.58 - 1 4 7 . 78 - 1 4 6 . 18 -139.01 -142.99 -141.40 -141.40 -142.20 -142.20 -142.2 0 -142.20 -140.60 - 1 3 9 . 01 -142.99 -142.99 -144.59 -143.79 -148.58 -144. 59 -143.7 9 -143.79 -146.18 - 1 4 2 . 99 -146.18 -145.39 -147.78 -144.59 -142.20 -141,40  -147.25 -145.58 -144.75 - 1 4 4 .75 -144.75 -141.42 -144.75 -144.75 -143.92 -144.75 -145.58 -144.75 -145.58 - 1 4 3 .92 -144.75 -147.25 -149.75 -149.75 -151.41 - 1 5 0 .58 -151.41 -149.75 -148.91 -149.75 -148.08 -148.08 -146.41 -147.25 -147.25 - 1 4 8 .0 8 -145.58 -144.75 -147.25 -148.08 -148.08 -149.75 -153.91 -148.08 -148.91 - 1 4 8 .0 8 -149.75 -148.08 -150.58 - 1 5 1 .41 -150.5 8 -151.41 - 1 4 8 .0 8 -145.5 8  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  oocc  110.35 108.84 108 .84 108.84 108.09 108.09 108.09 107.34 108.09 106.59 107.34 107.34 107.34 107.34 108.09 108 .84 111.10 112.60 111.85 114.86 115.61 116.36 117 .86 117.86 120.12 120.12 116.36 117.86 119.37 117 .86 116.36 115.61 116 .36 118.61 116.36 119.37 121.62 120.12 115.61 115.61 1 18.61 119.37 121.62 121.62 1 2 0 . 12 119.37 116.36 115.61  -110.68 - 1 0 9 . 05 -109.86 -109.05 -109.86 -108.23 -110.68 -109.05 -109.86 -109.05 -109.05 - 1 0 8 . 23 -109.86 -109.05 -109.86 -109.86 -113.13 -114.76 -115.58 -118.03 -118.03 - 1 1 8 . 85 -119.66 -122.93 -124.57 -122.93 -120.48 -120.48 -120.48 -120.48 -117.21 -116.40 -118.85 -119.66 -118.03 -121.30 -120.48 -118.03 -117.21 -116.40 -119.66 -120.48 - 1 2 2 .93 -122.93 -118.85 -120.48 -118.03 -117.21  0030 0100 0130 0200 0230 0300 0330 0400 0430 0500 0530 0600 0630 0700 0 730 08C0 0830 0900 0930 1000 10 30 1100 113 0 1200 1230 13C0 1330 1400 1430 1500 1530 1600 1630 1700 1730 18C0 18 30 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  9 0 CM DEPTH -129.77 -127.26 -127.26 -127 .26 -127.26 - 1 2 6 .42 -126.42 -126.42 - 1 2 7 .26 -126.42 -126.42 -126.42 - 1 27 . 2 6 -126.42 -127.26 -127 .26 -128.93 -133.12 -134.79 -137.31 -136.47 -135.63 -136.47 -142.33 -142.33 - 1 3 6 .47 -137.31 -137.31 -138.98 -137.31 -137.31 -134.79 -135.63 -138.98 -136.47 - 1 3 9 .82 -138.98 -133.96 -130.61 -134.79 -137.31 -138.98 - 139 . 8 2 -139.82 -136.47 -137.31 - 1 3 9 .8 2 -135.63  1 2 0 CM DEPTH -140.60 - 1 3 9 . 01 -138.21 -137.41 -138.21 -135.82 -136.61 -135.82 -137.4 1 -.135.82 -136.61 -136. 61 -137.4 1 -136.61 -139.01 -137.41 -139.80 -143.79 -144.59 -146.18 -147.78 -147. 78 -145.39 -.150.97 -151.77 -14 6.98 -146.98 -150.17 -14 9.38 -147.78 -146.18 -142.99 -147.78 -147.7 8 - 1 4 6 . 18 - 1 4 6 . 98 -147.78 -142.20 -141.40 -142.99 -144.59 -146.98 -147.78 -147.78 -143.79 -146.18 - 142.99 -143.79  -144.75 -143.92 -141.42 -142 .25 -141.42 -141.42 -140.58 - 1 4 0 .58 -141.42 -139.75 - 1 4 0 .58 -139.75 -141.42 - 1 4 1 .42 -142.25 -142.25 -144.75 -147.2 5 -148.08 -150.58 -149.75 -149.75 -150.58 -157.24 - 1 5 5 .58 -153.08 -150.5 8 - 1 5 1 .41 -153.08 -151.41 - 1 4 8 .91 -148.91 -152.24 - 1 4 8 .08 - 1 5 3 .08 -153.91 -151.41 -144.75 -144.75 -146.41 - 1 5 1 .41 -151.41 - 1 5 1 .41 - 1 5 1 .41 - 1 4 8 .91 -148.91 -148.08 -147.2 5  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3  TIME (HOURS )  3 0 CM DEPTH  6 0 CM DEPTH  0000 0030 0100 013 0 0200 0230 0300 0330 0400 0430 0500 053 0 0600 06 3 0 070 0 0730 0800 0830 0900 0930 1000 103G 1100 1130 12 0 0 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 183 0 190 0 1930 2000 2030 2100 2130 2200 2230 2300 2330  115 .61 116.36 112.60 111.85 111.10 111.85 111.8 5 1 1 1 .10 112.60 111.85 111.10 110.35 111.85 111 .85 114.10 114.10 113.35 114.10 116.36 116,36 116.36 115.61 119.37 117 . 8 6 117.86 120.87 117.11 116.36 117.86 119.37  - 1 1 5 .58 -114.76 -112.31 -112.31 -112.31 - 1 1 1.50 -113.95 - 1 1 3 .13 -113.13 -113.13 -113.95 -112.31 - 1 1 3 . 95 -113.13 -117.21 -114.76 -118.03 -116.40 -118.03 -119.66 -118.85 -118.03 -118.85 -118.85 -121.30 -118.85 -117.21 -118.03 -118.85 -118.85 -118.85 -118.85 - 118.85 -118.85 -120.48 -121.30 -122.93 -125.38 -120.48 -120.48 -125.38 -123.75 - 1 2 2 . 93 -127.02 -125.38 -124.57 -123.75 -122.93  119 .37 119.37 120.12 120 .12 1 2 0 . 12 123.88 123.88 123.88 123.12 123.88 1 25 . 3 8 123.8 8 124.6 3 1 2 6 .88 126.88 126.88 125.38 124.63  9 0 CM DEPTH -134.79 -134.79 -131.45 -128.93 - 1 2 8 .93 - 1 2 8 .9 3 -129.77 -131.45 -129.77 -128.93 -128 .93 -129.77 -130.61 -130.61 -131.45 -131.45 - 1 3 3 . 12 -134.79 -134.79 -135.63 -138.98 -138.98 -138.14 -138.98 -138.98 -136.47 -135.63 -134.79 -134.79 - 1 3 6 .47 -136.47 -134.79 -137.31 -134.79 -138 .98 -138 .14 -139.82 -138 . 5 6 -138.98 - 1 3 6 .4 7 -140.66 -140.66 -138.98 -138.98 -142.33 -141.49 -137.31 - 1 3 8 .98  12 0 CM DEPTH -142.20 -139.80 - 1 3 9 . 01 -140.60 -13 9.01 -137.41 -138.21 -138.21 - 1 3 9. 0 1 -137.41 -136.61 -135 .82 -138.21 -139.01 -140.60 -139.80 -141.40 -141.40 -142.20 -142.99 - 1 4 6 . 18 -147.78 -146.18 -144.59 -148.58 -144.5 9 -142.2 0 -143.79 -143.79 -143.79 -143.79 -144.59 -143.79 -143.7 9 -145.39 -146.18 - 1 4 8.5 8 -145.39 -146.18 -143.79 -147.78 -142 .99 -144.59 -146.98 -148.58 -148. 58 -143.79 -143.79  -145.58 -144.75 -143.08 -143.08 -144.75 -140.58 -142.2 5 -141.42 -141.42 -142.25 -140.58 -141.42 -141.42 -142.25 -145.58 -143.08 -144.75 -144.75 -145.58 -145.58 -146.41 -147.25 -149.75 -147.25 - 1 4 8 .91 -147.25 -144.75 -146.41 -146.41 -147.25 -146.41 -147.25 -148.91 -146.41 -149.75 -148.91 -153.08 -147.25 - 1 4 8 .0 8 -145.58 - 150.58 -148.91 -151.41 -150.58 -153.08 -153.91 -149.75 -146.41  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4  TIME {HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  OOOO OOCC 0030 0100 013 0 02G0 0 230 0300 0330 0400 0430 05CC 0530 0600 0630 0700 0730 0800 0830 09C0 0930 100 0 1030 1100 1130 12C0 12 30 1300 1330 1400 1430 15C0 1530 1600 1630 1700 1730 1800 1 830 1900 1930 20CO 2030 2100 2130 22GG 2230 2300 2330  123.88 123.88 123.88 120.12 1 2 0 . 12 120.87 121.62 1 20 . 1 2 121.62 119.37 121.62 121.62 120.12 119.37 119.37 123.88 126.13 123.88 126.88 123.88  - 1 2 1 .30 - 1 2 1 .30 -119.66 -119.66 -116.40 -118.85 -118.03 -117.21 -118.85 -117.21 -118.85 -118.03 -118.85 -117.21 - 1 2 1 .30 -120.48 -124.57 -122.93 -125.38 -122.93 -127.02 -126.20 -127.83 -125.38 -127.02 -122.93 -122.93 -121.30 - 1 2 1 .30 -122.93 -120.48 -120.48 -122.11 -125.38 - 1 2 2 .93 -126.20 - 1 2 7 . 83 -128.65 -129.47 -127.83 -128.65 -126.20 -127.83 -128.65 - 1 3 2 .73 -133.55 - 131.92 -129.47 -13 0.28  1 2 6 .88 124.63 126.88 126.88 127.63 1 2 6 . 13 125.38 1 2 3 . 8 8  123.12 124.63 123.12 123.88 126.13 126.88 127 .63 129.89 132.14 132.14 135.15 132.90 133.65 133.65 135.15 135.90 1 3 8 . 16 139.66 1 3 8 . 9 1  136.65 138.16  90 CN DEPTH - 136 . 4 7 -136.47 -135.63 -133.12 - 1 3 3 .9 6 -133.9 6 -132.28 -131.45 -134.79 -133.12 -133.96 -133.96 -134.79 -135.63 -138.14 -135.63 -137.31 -135.63 -139.82 -137.31 -140.66 -142.33 -142.33 -140.66 -144.00 -140.66 -138.14 -138.14 -136.4 7 -136.47 -135.63 -135.63 -138.98 -138.98 -139 . 8 2 -139.82 -143.17 -142.33 -143.17 -139 .82 -144.84 -141.49 -143.17 - 1 4 3 .17 -143.17 -148.19 -146.52 - 1 4 3 . 17 -143.17  1 2 0 CM DEPTH - 1 4 2 . 20 - 142.20 -140.60 -140.60 - 1 3 9 . 8 0  -141.40 -140.60 -13 8.21 -139.01 -141.40 -141.40 -140.6 0 -139.80 -139.80 -145.39 -142 .99 -142.99 -143.79 -147.78 -146.18 -146.98 -146.98 -149.38 -147.78 -148.58 -147.78 -143.79 -145.39 -143.79 -142.99 - 142.99 -142.99 -147.78 -146.18 -146.98 -148.58 -147.78 -149.38 - 1 5 0 . 1 7  -147.78 -148.58 -147.78 -148.58 -147.78 -148.58 -150.97 - 1 5 0 . 97 -149.38 -150.17  -145.58 -145.58 -144.75 -143.08 -143.08 -142.25 -144.75 - 1 4 1 .42 - 1 4 3 .92 -143.92 -145.58 -143.0 8 -142.25 -143.08 -147.25 -147.25 -148.08 -147.25 -150.58 -148.91 -149.75 -149.75 -151.41 -151.41 -152.24 - 1 4 8 .08 -145.53 -147.25 -145.58 -144.75 -144.75 -147.25 - 1 4 7 .25 -148.91 -147.25 - 1 5 2 .24 -150.58 -153.08 -152.24 -150.58 -152.24 -149.75 - 1 5 2 .24 -152.24 -153.91 -156.41 -153.91 -150.58 -148.08  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5  TIME { HO URS )  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CH DEPTH  GOOD 003G 0100 0130 0200 0230 0300 0330 0400 0430 0500 0530 0600 0 630 0700 0730 0800 0830 0900 0930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 153 0 1600 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 2230 2300 233 0  134.40 130.64 128.39 129.14 1 2 8 . 39 126.88 129.14 126 . 1 3 127.63 126.88 127 .63 126.88 1 2 9 . 14 1 2 9 . 14 1 3 1 . 39 132.14 131.39 132.14 132.90 13 2.90 134.40 135.15 135.90 1 3 5 .'90 1 3 2 .90 132.90 135.15 131.39 134.40 135.90 138 .16 134.40 136.65 136.65 138 .16 1 3 8 . 16 141.17 138 .16 1 4 1 . 17 140.41 1 4 1 .17 141.92 142.67 146.4 3 1 4 5 .68 146.43 1 4 7 . 18 141.92  127.83 125.38 122.93 1 2 3 .75 122.93 120.48 1 2 2 . 11 122.11 12 3 . 7 5 122.93 123.75 123.75 124.57 123.75 12 8.65 127.83 127.83 127.02 12 7 . 0 2 128.65 128.65 131.10 130.28 12 5 . 3 8 12 7.02 127.02 128.65 127.02 129.47 127.02 128.65 127.02 127.83 129.47 131 .10 131.92 1 3 5 . 18 130.28 131.10 131.92 131.92 136.00 134.37 136.00 137.63 136.82 1 3 5 . 18 133.55  -140.66 -138 .1 4 -136.4 7 -137.31 - 1 3 8 .98 -136.4 7 -137.31 -135.6 3 -136.47 -135.63 -134.79 -133.96 -136.47 -137.31 -141.49 -138.98 -143.17 - 1 3 9 .8 2 -138.98 -138.14 -142.3 3 -144.00 -144.00 -139.8 2 - 1 4 3 .17 -142.33 -142.33 -143.17 -142.3 3 -142.33 -143.17 -143.17 -142.33 -143.17 -144.00 -145.68 -145.68 -142.3 3 -144.00 -145.68 -146.52 -144.84 -147.35 -150.70 -150.70 -149.87 -145.68 -144.00  -145.39 -143.79 -142.99 -143.7 9 -142.99 -139.01 -139.01 -139.80 -140.60 -140.60 -141.40 -139.80 -141.40 -142.99 -146.98 - 1 4 6 . 18 -147.78 -147.7 8 -146.98 -146.18 -147.78 -150.97 -150.97 -146.98 -146.18 -146.18 -146.98 -14 7.78 -147.78 -148.58 - 1 5 0 . 97 -148.58 -147.78 -147. 78 -150.97 -150.97 -147. 78 -14 8.58 -148.58 -1.50. 17 -151.77 -149.3 8 -150.97 -150.97 -1.54. 16 - 1 5 2 .57 -149.38 -146.98  -146.41 -145.58 -3.43 . 0 8 -144.75 -143.92 -142.2 5 -143.08 -143.92 -140.58 -143.08 - 143.08 -140.58 -144.75 -145.58 -151.41 -147.25 -148.08 -148.08 - 1 5 1 .41 -148.91 -150.58 -151.41 - 1 5 2 .2.4 -149.75 -147.25 -148.91 -148.91 -147.25 -149.75 -147.25 -148.08 -147.25 -148.08 -148.91 -149.75 -151.41 -152.2 4 -149.75 -148.91 -148.91 -152.24 - 1 5 1 .41 -153.0 8 -153.91 -153.91 -157.24 -151.41 -148.08  C AT E  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6  T IME (HOURS) OOOO 0030 0100 0130 0200 0230 0300 0330 0400 0430 0500 0530 06CC 0630 0700 0730 0800 0830 0900 0930 1000 103 0 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 16CC 1630 1700 1730 1800 1830 1900 193 0 2000 2 03 0 2100 2130 2200 2 23 0 2300 2330  3 0 CM DEPTH  6 0 CM DEPTH  — 1 4 1 . 17  - 1 3 1 . 10 - 1 2 8 . 65 - 1 2 8 . 65 - 1 2 8 . 65 - 1 2 8 . 65 -128.65 - 1 2 7 . 02 - 1 2 7 . 83 - 1 2 9 .4 7 - 1 2 8. 6 5 - 1 2 7 . 83 - 1 2 6 . 20 - 1 2 8 . 65 - 1 3 1 . 92 - 1 3 2 . 73 - 1 3 2 . 73 - 1 3 1 . 92 - 1 3 5 . 18 - 1 3 2 . 73 - 1 3 1 .92 - 1 3 5 . 18 - 1 3 5 . 18 - 1 3 6 . 00 - 1 3 3 . 55 - 1 3 6 . 82 - 1 3 3 .5 5 - 1 3 3 . 55 - 1 3 3 . 55 - 1 3 1 .10 - 1 3 3 . 55 - 1 3 3 . 55 - 1 3 3 . 55 - 1 3 4 . 37 - 1 3 6 . 82 - 1 4 2 . 54 - 1 4 4 . 17 - 1 4 5 . 80 - 1 4 0 . 90 - 1 3 7 .6 3 - 1 3 8 . 45 - 1 3 8 . 45 - 1 3 7 . 63 - 1 4 2 .5 4 - 1 4 1 . 72 - 1 4 4 . 17 - 1 4 4 . 99 - 1 4 0 . 90 -137.63  -1 4 0 . 4 1 -1 4 0 . 4 1 -138.91 -1 3 8 . 1 6 -1 3 8 . 1 6 -138.16 -139.66 -1 3 8 . 9 1 -1 3 7 . 4 1 -138.16 -1 3 5 . 9 0 -138.91 -139.6 6 -1 4 1 . 1 7 -1 4 3 . 4 2 -1 4 1 . 9 2 - 1 4 1 . 17 -1 4 1 . 1 7 -1 4 1 . 9 2 - 14 3 . 4 2 -1 4 3 . 4 2 -1 4 5 . 6 8 -1 4 2 . 6 7 -1 4 6 . 4 3 -141.92 -143.42 -142.67 -1 4 1 .92 -1 4 5 . 6 8 -145.68 -1 4 3 . 4 2 -1 4 3 . 4 2 -149.43 -1 5 1 . 6 9 -153.19 -156.95 -150.94 -148 .68 -1 5 0 . 1 9 -148.68 -152.44 -1 5 3 . 9 4 -153.19 -1 5 6 . 2 0 -1 5 6 . 2 0 -153.19 - 149.43  9 0 CM DEPTH -141.49 -139.8 2 - 1 3 8 . 14 -141.49 -141.49 -142.33 -138.98 -138.98 -139.82 - 1 3 3 .9 8 -139.82 - 1 3 8 . 14 -139.82 -142.33 -145.68 -145.68 -145.68 -145,68 -143.17 -142.33 -148.19 - 1 4 6 .52 -147.35 -146.52 -148.19 -144.00 -144.00 -144.00 -144.00 -143.17 -145.68 -143.17 -145.68 -148.19 -154.0 5 -154.89 -154.05 -151.54 - 1 4 8 .19 -148.19 -1 49 . 8 7 - 15 2 . 3 8 -152.38 -150.70 -154.05 -151.54 -152.38 -143.19  1 2 0 CM DEPTH  1 5 0 CM DEPTH  -144.59 - 142.99 -143.79 -142.99 -144.5 9 -146.18 -144.59 -142.99 -142.99 -142 .99 -143.79 - 143.7 9 -145.39 -143.79 -146.18 -148.58 -152.57 -148.58 -145.3 9 -146.98 -149.38 -151.77 -150.97 -150.97 -151.77 -150.17 -149.38 -147.78 -147.78 -147.78 -147.78 -144.59 -148.58 - 1 5 1.77 -156.5 5 -156.55 -157.35 -151.77 -151.77 -150.97 -150.97 -151.77 -155.76 -152.57 -156.55 -151.77 -152.57 -147.78  -146.41 -144.75 -144.75 -145.5 8 -144.75 - 145.58 -147.2 5 -144.75 - 143.92 -143.08 -143.08 -143.92 -145.58 -145.58 -147.25 -148.91 -153.08 -149.75 -148.91 - 1 4 8 .91 - 1 5 2 .24 -153.08 -151.41 -151.41 -152.24 -151.41 -149.75 -148.08 -150.58 -149.75 -148.91 -148.08 -149.75 - 1 5 3 .08 -158.07 -158.07 - 1 6 0 .57 -152 .24 -153.91 -152.24 - 1 5 2 .24 -157.24 -160.57 - 1 5 8 .07 -158.07 -155.58 -155.58 -149.75  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7  TIME (HOURS )  3 0 CM DEPTH  6 0 CM DEPTH  oocc  149.43 149.43 1 4 5 .68 143.42 145.68 1 4 5 .63 145.68 144.17 144.92 144.92 145.68 146.43 146.43 148.68 150.19 15 0 . 1 9 153.94 151.69 153.19 149.43 152.44 151.69 154.70 153.19 156.95 1 5 3 . 19 153.94 153.19 153.94 15 3 . 1 9 153.94 154.70 155 .45 153.94 153.19 156.20 157.70 154.70 154.70 153.94 1.53. 1 9 153.19 15 3 . 1 9 152.44 150.19 15 2 . 4 4 151.69 149.43  -135,18 - 133,55 -134.37 -132.73 -133.55 -132.73 -133.55 -132.73 -132.73 - 1 3 0 .28 -133.55 -133.55 -132.73 -137.63 -140.08 -141.72 -142.54 -141.72 -143.35 -140.90 -142.54  00 30 0100 0130 0200 0230 0300 0330 0400  0430 0500 0530  0600 0630 0700 0730 08G0 0830 0900 0930 1000 10 3 0 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1 730 1800 1830 1900 1930 2 000 2030 2100 2130 2200 2230 2300 2330  - 145.80 -143.35 -143.35 -149.07 -144.17 -144.17 -144.17 -144.17 - 1 4 5 .80 -145.80 -146.62 -147.44 -148.25 -145.80 -145.80 -146.62 -148.25 -148.25 -149.07 -149.07 -149.8 9 -148.25 -147.44 -147.44 -148.25 -148.25 -144.99  9 0 f CM DEPTH  1 2 0 CM DEPTH  -145.68 -146.18 -144.00 - 1 4 4 . 59 -142.3 3 - 145.3 9 -145.63 -142.99 -140.66 -142.99 -140.66 -141.40 -143.17 -142.99 -139.82 -142.99 -142.33 -145.39 - 1 39 . 8 2 - 1 4 3 . 7 9 -141.49 - 1 4 2 .99 -143.17 -146.18 -141.49 -146.18 -148.19 -150.17 - 1 4 3 .1 9 - 1 5 0 . 97 -151.54 -154.96 -151.54 -155.76 -150.70 -151.77 -152.38 -154.96 -152.38 - 1 5 8 . 15 -153.21 -156.55 -153.21 -157.3 5 -154.89 -159.74 -154.05 -157.35 - 1 58 . 2 4 -158.95 -152.38 - 1 5 6 . 55 -152.38 -15 5.76 -151.54 -155.76 - 1 5 1 .54 -155.76 -153.21 -156.55 -151.54 - 1 5 5 .76 -154.89 -157.35 -154.05 -159.74 -153.21 -157.35 -153.21 -158.15 -154.05 - 1 5 6 . 55 -152.38 -158.15 -154.05 -15 8.95 -154.05 -158.95 -154.05 -158.15 -153.21 - 1 5 8 . 15 -154.89 -156.55 -153.21 -157.35 -151,54 -157.35 -153.21 -154,96 -153.21 -156.55 - 1 5 0 .70 -152.57 -149.03 -154.16  -148.91 -148.08 -144.75 -144.75 -145.58 -144.75 -145.58 - 1 4 4 .75 -148.0 8 -144.75 -145.58 -147.2 5 -147.25 -151.41 -151.41 -158.07 -156.41 - 1 5 5 .58 -156.41 -157.24 -156.41 -157.24 -158.91 - 1 5 9 .74 -159.74 -158.07 -157.24 - 1 5 3 .91 -153.91 -156.41 -155.58 -156.41 -159.74 - 1 5 8 .91 -157.24 -158.07 -158.91 - 1 5 8 .07 -158.07 -158.07 - 1 5 7 .24 -158.07 -159.74 -157.24 -157.24 -158.07 -156.41 -157.24  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  12 0 CM DEPTH  OOOO 0030 0130 0200 0230 0300 0330 0400 0430 0 500 0530 0600 0630 0700 0730 08G0 0 83 0 0900 0930 1000 103 0 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1 730 1800 1830 1900 1930 2000 2 03 0 2100 2130 2200 2230 2300 2330  1 4 9 .4 3 149.43 152.44 150 .94 150.94 151.69 151.69 150.19 152.44 151.69 152.44 152.44 153.94 15 3 . 1 9 153.19 153.94 1 5 6 .20 156.95 156.95 159.21 158.45 157.70 156.95 1 6 0 .7 1 155.45 154.70 1 5 4 .70 157.70  145.80 147.44 144.99 141.72 141.72 140.08 142.54 144.99 143.35 145.80 145.80 144.99 146.62 147.44 148.25 147.44 148.25 148.25 149.07 147.44 144.99 146.62 144.99 145.80 144.99 144.99 143.35 146.62 143.35 145.80 141.72 144.99 144.99 149.39 145.80 144.99 145.80 146.62 149.89 146 .62 148.25 149.89 147.44 149.07 146.62 1 4 4 . 17 144.17  - 1 4 9 .87 -150.70 -151.54 -151.54 -143 .19 -147.35 -147.35 -149.87 -151.54 - 1 5 0 .70 -150.70 -152.38 -153.21 -153.21 -154.05 -152.38 -154.05 -153.21 -154.89 -154.05 -154.05 -154.05 -154.89 - 1 5 6 .56 -150.70 -154.05 - 151.54 -154.89 -15.1 . 5 4 - 1 5 4 .05 - 1 5 0 .70 -154.05 -153.21 -159.91 -154.89 -154.89 -155.73 -156.56 -156.56 - 1 5 2 .38 -155.73 -155.73 -154.05 -154.89 -151.54 -152.38 -152.38  -153.36 - 1 5 2 .57 -154.96 -154.16 - 1 5 5 .76 -154.96 -154.96 -156.55 - 1 5 4 . 16 - 153.3 6 -153.3 6 -154.16 -154.96 - 1 5 4 . 16 -154.96 -155.76 -155.7 6 -156.55 -156.55 -154.96 -153.36 -157.35 -156.55 -155.76 -153.36 - 1 5 1 . 77 -154.96 -156.55 -154.16 -154.96 -151.77 - 1 5 4 . 16 -156.55 - 1 5 8.95 -153.36 -155.76 -156.55 -154.96 -159.74 -159.74 -155.76 -155.76 -152.5 7 -151.77 -154.16 - 1 5 1 . 77 -151.77  15 5 . 4 5 156.95 153.94 156.95 156.20 161.46 159.21 157.70 158.45 157.70 161.46 16 0.71 1 6 0 .7 1 163.72 162.21 162.21 160.71 159.96 160 .71  -157.24 -156.41 - 1 5 2 .24 -154.74 -155.58 -154.74 -153.91 -154.74 -154.74 -155.58 -156.41 -157.24 -156.41 -155.58 -157.24 -154.74 -155.58 -155.58 -156.41 -157.24 -153.91 -156.41 -158.07 -159.74 - 1 5 6 .41 -156.41 -155.58 -157.24 -156.41 -155.58 - 153.91 -156.41 -159.74 -158.07 - 1 5 8 .07 -155.58 -155.58 -156.41 - 1 5 8 .07 -157.24 -158.07 - 1 5 8 .07 -155.58 -155.58 - 1 5 5 .58 -153.91 -155.58  DATE  A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A  9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9  T I ME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  oooo  -157.70 -154.70 -158.45 -157.70 -155.45 -155.45 -156.20 - 156.20 - 1 5 7 .70 -156.95 -156.9 5 -155.45 - 1 5 7 . 70 -155.45 - 156.95 -154.70 -160.71 -160.71 - 1 5 9 .21 -159.21 - 1 6 0 . 71 - 1 6 1 .46 -162.21 -157.70 - 162.21 - 1 6 0 .71 -161.46 -157.70 -159.21 -162.96 - 159.21 -160.71 - 1 5 9 .21 -162.21 -162.96 -162.96 -164.47 -161.46 -163.72 -163.72 -162.96 -164.47 -162.96 -161.46 - 164.47 -163.72 -163.72 -165.2 2  -142.54 - 1 4 0 .90 - 1 4 1 .72 -143.35 -142.54 -141.72 -140.90 - 141.72 -141.72 -141,72 -143.35 -140.08 -140.90 -141.72 -142.54 -144.99 -147.44 -148. 25 -144.99 -146.62 -144.99 -147.44 -149.89 -147.44 -148.25 -147.44 -147.44 -146.62 -145.80 -149.07 -147.44 -149.89 -144.99 -148.25 -149.89 -149.89 -150.70 -149. 07 -151.52 - 1 5 1 .52 -153.15 -152.34 -153.15 -153.15 -153.15 -150.70 - 1 5 1 .52 -151.52  - 1 4 9 .03 - 1 4 7 .35 - 1 4 8 .19 -147 .35 - 1 5 0 ... 70 -147 .35 - 1 4 6 . 52 -147 . 35 - 1 4 8 . 19 - 1 4 6 .52 - 1 5 0 .70 - 1 4 8 .19 - 1 4 7 .35 -149 .03 -150 .70 - 1 4 9 .03 -154 .89 -154.05 - 1 5 5 .73 - 1 5 5 .7.3 - 1 5 1 .54 - 1 5 4 .89 - 1 5 5 .73 -154 .05 - 1 5 9 .91 -154 .05 - 1 5 5 .73 -152 . 38 -154.05 - 1 5 5 .73 - 1 5 9 .07 - 1 5 4 .0 5 -152 .38 -154 .05 - 1 5 5 . 73 - 1 5 6 .56 -155 .73 - 1 5 6 . 56 - 1 5 7 .40 - 1 5 7 .40 - 1 5 5 .73 - 1 5 4 .89 - 1 5 4 .89 -154 .05 -154.89 - 1 5 4 .05 - 1 5 3 .21 - 1 5 4 .05  -151.77 - 150.97 -149.3 8 -148.58 -146.98 -148.58 -147,78 -.150. 9 7 -149.3 8 -147.78 -149.38 - 149.38 -150.97 -147.78 -150.97 -150.97 - 1 5 1 .77 -152. 57 -155.76 -156.55 -154.96 -156. 55 -156.55 -154.16 -156.55 -15 8.15 -155 .76 -155.76 -154.96 -158.15 -155.76 -156.55 -151.77 -155.76 -154.96 -154.96 -156.55 -154.96 - 155.76 -155.76 -156.55 - 1 5 8 . 15 -154.96 -155.76 -156.55 -1.56.55 -157.35 -156.55  0030 0100 0130 0200 023 0 0300 0330 0400 0430 0500 0 530 0600 0630 0700 0730 0800 0830 0900 093C 1000 10 30 1100 1130 1200 1230 130 0 1330 1400 1430 1500 1530 160 0 1630 1700 1730 1800 1830 190 0 1 93 0 2000 20 30 2100 2130 2200 2230 230 0 2330  1 5 0 CM DEPTH -153.91 -152.24 - 152.24 -148.91 -147.25 •- 1 4 9 . 75 - 1 4 8 .91 -149.75 -151.41 -149.75 -148.91 -148.91 -149.75 -151.41 -149.75 - 153.0 8 -154.74 -156.4.1 -156.41 -156.41 -154.74 -158.07 -156.41 -156.41 -156.4,1 -158.07 -156.41 -153.91 -153.91 - 1 5 8 .07 -157.24 -153.08 -153.91 -157.24 -157.24 -156.41 -157.24 -156.41 -155.58 -156.41 - 1 5 8 .0 7 -157.24 - 156.41 -157.24 -156.41 -158.07 -156.41 -155.58  DATE  AID AlO AlO AlO AlO AlO AlO AlO A10 AlO AlO AlO AlO AlO AlO A 10 AlO A1G AlO AlO AlO AlO AlO  AlO  AlO AlO AlO AlO A 10  AlO AlO AlO AlO AlO AlO AlO AlO  A10 AlO AlO  AlO AlO AlO AlO AlO A 10 AlO AlO  TIME (HOURS) OOCO 0030 ' 0100 0130 0200 0230 0300 0330 0400 0430  0500 0530 0600 063 0 0700 0 730 0800 0830 0900 0930 10G0 1030 1100 1130 1200 1230 1300 13 3 0 1400 1430 150G 1530 1600  1630  1700 1730 1800 18 30 1900 1930 2000 2030 2100 2130 2200 2230 2300 2330  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  164.47 163.72 161 .46 159.96 159.21 159.96 159 .96 160.71 159.96 160 .71 161.46 160.71 16 0.7 1 162.96 161.46 166.72 165 .22 164.47 167.47 165 .22 168.23 169.73 1 6 8 .98 170.48 170.48 170.48 168 . 2 3 170.48 175.74 16 8 . 2 3 171.98 172.74 1 7 5 .7 4 172.74 172.74 173.49 176.49 174.99 177.25 180.25 181.00 182.51 187.77 184.76 184.01 183.26 182.51 181.76  149.89 149.07 149.89  -154.05 -154.89 -154.0 5 -154.05 -154.89 -155.73  151.52  150.70 151.52 151 .52 151.52 152.34 152.34 153.15 153.97 153.15 153.97 153.97 154.79 157.24 156.42 158.87 158.05 15 8.05 157.24 158.87 15 8.87 158.05 155.60 154.79 155.60 157.24  155.60 155.60 157.24 157.24 156.42 158.05 156.42 158.87  159.69 1 6 2 . 14 160.51 162.14 161.32 168.67 166.2 2 162.96 162.96 1 5 9 .69 158.87  -155.73  -157.40 -158.24 -158.24 -159.07 -159.0 7 -159.91 -159.07 -159.91 -159.91 -160.7 5  -159.91  -161.59 -162.42 -161.59 -163.26 -16 3.26 -162.42 -164.10 -159.91 -157.40 -159.91 -164.10 -159.07 -159.07  -160.75 -163.26 -161.59 -164.10  -162.42  -164.10 -164.94 -165.77 -164.94 -164,94 -166.61 -172.47 -169 .96 -165.77  -166.61 -161.59 -164.10  1 2 0 CM DEPTH -156.55 -155.76 -155.76 -154.96 -156.55 -155.76 -.154. 16 -152 .57 -154.16 -155.76 -155.76 -156. 55 -156.55 -158.15 -.157.35 -156.55 -157.35 -158.95 -158.15 -159.74 -159.74 -160. 54 - 1 6 0 . 54 -159.74 -161.34 -160.54 -157.35 -15 9.74 -162.14 -155.76 -152.57 -159.74 - 1 6 2 . 14 -161.34 -161.34 -160.54 -162.14 - 1 6 1 .34 -163.73 -162.93 -163.73 -162.93 -166.92 -.166. 1 2 -162.93 -162.93 -158.15 -158.15  -155.58 -154.74 -155.58 -156.41 -156.4.1 -157.24 -156.41 -156.41 -157.24 -157.24  -158.07  -157.24 -158.07 -158.91 -158 .07 -158.91 -159.74 -158.07 -159.74 -159.74 -160.57 -160.57 -160.57 -161.41 - 1 5 9 .74 -158.07 -156.41 -161.41 -160.57 -157.24 -161.41 -158.91 -161.41 -159.74 - 1 5 9 .74 -160.57 - 159.74 -161.41  -163.07  -163.07 -163.07 -16.3.90 -168.07 -166.40 - 1 6 3 .07 -161.41 -159.74 -159.74  DATE  All All All All All All All All A l l All All All All All All All All All All All All All A U All All A l l All All All All All All All All All A l l All All All All All Ail All All All A l l All All  TIME (HOURS) 0000 0030 0100 0130 0200 0230 0300 0330 0400 0 430 0500 0530 0600 0630 070 0 0730 0800 083 0 0900 0930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500 153 0 160 0 1630 1 7G0 1730 1800 1830  190 0 1930 2000 2030 2100 2130 2200 2230 2300 2330  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  181.76 181.00 182.51 1 8 1 .00 181.00 180.25 18 0.25 180 . 2 5 181.00 177.25 181.00 181.00 184.01 182.51 184.76 184.01 184.01  - 1 5 8 .05 -157.24 - 1 5 8 . 05 -155.60 -156.42 -155.60 - 1 5 5 .60 -155.60 -156.42 - 154.79 -156.42 -156.42 -159.69 -156.42 -162.14 -159.69 -159.69 - 1 5 8.05 -161.32 - 1 6 2 . 14 - 1 6 2 .96 -162.96 - 1 6 0 . 51 -162.96 -161.32 -162.14 -15 9.69 -159.69 -158.87 -161.32 - 1 5 9 .69 -159.69  -162.42 -161.59 -159.91 - 1 5 7 . 40 -158 .24 - 1 5 8 .24 -156.56 -157.40 -159.07 -156.56 -158.24 -157.40 -162.42 -160.7 5 -161.59 -164.94 -162.42 -161.59 -164.10 -165.77 - 1 6 5 .77 -165.77 -164.94 -165.77 -165.77 -164.94 - 1 6 4 . 10 -163.26 -162.42 -166.61 -163.26 -164.10 -164.94 -167 .45 -168 .28 -168 .28 -170 .80 - 1 7 0 .80 -168.28 -170.80 -173.31 -173.31 -175.82 -177.49 -174.15 -174.15 -170.80 -164.94  - 1 5 8.15 -158.95 -159.74 - 157.35 -156.55 -154.96 -152.57 -154.16 -154.96 -154.16 -154.96 -154.96 - 1 5 8. 1 5 - 1 5 8 . 15 -157.35 -159.74 -156.55 -159.74 -161.34 -163.73 -163.73 -162.14 -162.93 -163.73 -164.53 -162.14 -161.34 -159.74 - 1 5 8.95 -162.93 -158.95 -160.54 - 1 5 9 . 74 -164.53 - 1 6 6 . 12 - 1 6 6 . 12 -163.73 -165.33 -162.93 -166.12 -166.92 -167.72 -166.92 - 1 7 0 . 11 -166.12 -165.33 -164.5 3 -158.95  18 2 . 51 183.26 183.26 185.51 184.76 182.51 184.76 184.01 183.26 1 8 1 .76 179.50 179.50 182.51 179.50 180.25 183.26 184.76 184.01 186.27 189.27 188.52 191.53 194.53 194.53 199.04 200.55 20 2 . 0 5 199.80 200.55 199.04 19 6 . 0 4  - 160.51 -163.77 -165.41 -165.41 - 1 6 6 .22 -165.41 -168.67 -169.49 -170.31 -171.12 -174.39 -176.84 -172.76 -172.76 - 1 7 1 .94 -167.86  - 159.74 -158.91 -158.07 -158.07 -157.24 -154.74 -152.24 -153.08 -154.74 -152.24 -155.58 -154.74 -158.91 -158.91 -160.57 -161.41 -158.07 -159.74 -159.74 -160.57 - 162.24 - 1 6 1 .41 -163.90 -161.41 - 1 6 2 .24 - 1 6 2 .24 -158.91 -159.74 - 1 5 8 .07 -161.41 -158.91 - 1 6 0 .57 -161.41 -163.07 - 1 6 3 .9G - 1 6 5 .57 -162.24 - 166.40 -163.90 -166.40 -165.57 - 1 6 7 .24 -170.57 -169.73 - 1 6 3 .90 -164.74 -161.41 -158.07  DATE  A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A 12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12 A12  TIME (HOURS)  3 0 CM DEPTH  OOOO 0030 0100 0130 0200 023 0 0300 0330 0400 0430 0500 0530 0600 0630 0700  -194.5 3 -193.78 -193.78 - 193.78 -194.53 -193.78 -196.79 - 1 9 3 .78 -194.53 -193.03 -195.29 - 1 9 6 .79 - 2 0 0 . 55 -202.05 -211.82 -207.31 -202.05 -198.29 -198.29 -196.04 -199.04 - 1 9 6 .04 - 1 9 7 . 54 -202.05 - 1 9 9 .04 -196.79 -199.04 -200.55 -199.04 - 201.30 -202.05 - 2 0 8 .06 - 2 0 8 . 06 -208.06 -213.33 -213.33 -214.08 - 2 0 8 .82 -206.56 -208.06 -204.31 -203.55 -202.05 -204.31 -200.55 -196.04 -193.78 - 1 9 0 .02  0 73 0  0800 0 830 G9GG 0930 1000 103 0 11C0 1130 1200 1230 1300 1330 1400 1430 1500 153 0 16C0 1630 1700 173 0 1800 1830 19GG 1930 2000 2 03 0 21GC 2130 2200 2230 2300 2330  6 0 CM DEPTH - 1 6 6 .22 - 1 6 3 .77 - 1 6 3 .77 - 1 6 4. 5 9 - 1 6 3 .77 - 1 6 3 .77 - 1 6 6 . 22 - 1 6 2 .96 - 1 6 3 .77 - 1 6 1 .32 - 1 6 2 . 14 - 1 6 4 .59 - 1 6 7 .86 - 1 7 0 .31 - 1 7 4 .39 - 1 7 1 .12 - 1 7 0 .31 - 1 6 7 .04 - 1 6 7 .86 - 1 6 7 .86 - 1 7 0 .31 - 1 6 8 .67 - 1 6 7 .86 - 1 7 4. 3 9 - 1 7 7 .66 -17 7 .66 - 1 6 9 .49 - 1 7 1 .94 - 1 7 1 .94 - 1 7 3 .57 - 1 7 4 .39 -176.84 - 1 7 5 .21 - 1 7 9. 2 9 -182 .56 - 1 8 0 .93 - 1 8 2 .56 - 1 7 9 .29 - 1 7 7 .66 - 1 8 1 .74 - 1 7 8 .48 - 1 7 7 .66 - 1 7 7 .66 -178.48 - 1 7 9 .29 - 1 7 6 .84 - 1 7 4 . 39 - 1 7 3 .57  9 0 CM DEPTH  1 2 0 CM DEPTH  1 5 0 CM DEPTH  -164.10 -164.10 -162.42 -165.77 -167.45 -165.77 -165.77 -164.94 -164.10 -162.42 -163.26 -164.10 -165.77 -167.45 - 1 7 3. 31 -169 .96 -169 . 12 -168.28 -167.45 -168.28 -169.96 -168.28 -171.63 -177.49 -172.47 -170.80 -169.96 -173.31 -171.63 -174.98 -174.98 -180.01 -174.98 -180.84 -182.52 -180.84 -18 3. 35 -178.33 -175 .82 -180.84 -178.33 -178.33 -178.33 -178.33 -176.66 -175.82 -174.15 -171.63  -157.35 -156.55 -156.55 -158.95 -160.54 -158.95 -156.55 - 157.3 5 -156.55 -155.76 -155.76 -158.95 -160.54 -162.14 -166.92 -162.93 - 1 5 9 . 74 - 1 5 8 . 95 - 159.74 -160.54 -159.74 -16 2.93 -1.63.73 - 1 7 0 . 11 -164.53 -163.73 -164.5 3 - 166.12 -165.33 -167.72 -165.33 - 1 7 0 . .11 -166.92 -171. 71 -174.90 -173.30 -169.31 -169.31 -167.72 -171.71 -168.52 -169.31 -170.91 -172. 50 -.167.72 -170.91 -167.72 - 163.73  -158.07 - 158.07 -155.58 -157.24 -161.41 -157.24 -156.41 -158.91 -155.58 -155.58 -155.58 - 159.74 - 1 6 0 .57 -161.41 -164.74 -165.57 -160.57 -161.41 -160.57 -159.74 -159.74 -165.57 -163.90 -166.4.0 -162.24 -1.62 . 2 4 - 1 6 2 .24 -163.90 -165.57 - 1 6 7 .24 -164.74 -168.90 -163.90 -172.23 -174.73 - 1 7 7 .23 -170.57 -170.57 -171.40 - 1 7 2 .23 -169.73 -169.73 - 1 6 9 .73 -169.73 -168.07 - 1 6 8 .90 -165.57 -162.24  DATE  A13 A13 A13 A13 A13 'A 1 3 A13 A13 A13 A13 A 13 A13 A13 A13 A13 A13 A13 A13 A13 A 13 A13 A13 A13 A13 A13 A13 A 13 A13 A13 A 13 A13 A 13 A13 A 13 A13 A13 A13 A 13 A13 A13 A 13 A13 A13 A 13 A13 A13 A13 A13  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  oooo  187.77 184 .76 184.01 182.51 182.51 182.51 183.2 6 184.76 18 2 . 5 1 184.01 178.75 179.50 181.00 181.76 187.02 1 8 7 .77 187.77 194.53 189.27 191.53 190.02 189.27 189.27 190.02 187.02 190 .02 187.77 187.02 189.27 189.27 190.78 191.53 191.53 193.03 198.29 198.29 199.80 202.05 2 0 2 .80 202.80 202.80 208.06 205.81 207.31 204.31 2 0 2 .8 0 200.55 200.55  171.94 170.31 171.12 169.49 1 7 1 . 12 1 7 0 .31 170.31 171.12 171.12 171.94 169.49 167.86 171.94 172.76 177.66 178.48 177.66 182.56 177.66 182.56 178.48 177.66 1 7 6 .84 178.48 175.21 177.66 175.21 175.21 177.66 177.66 176.84 177.66 178.48 180.11 183.38 182.56 1 8 4 . 19 185.83 185.83 184.19 182.56 187.46 185.83 185.01 182.56 181.74 179.29 17 6.84  -171.63 -171.63 -171.63 -168.28 -169.12 -168 .28 -167.45 -169.12 -169.12 -167.45 -165.77 - 1 6 7 .45 -169 .96 - 1 7 1 .6.3 -175.82 -17 2 .47 -176.66 -180.01 -176.66 -180 .01 -177.49 - 1 7 6 .66 -17 4.15 -180.01 -175.82 -178 .33 -173.31 -174.15 -177.49 -178.33 -174.15 - 1 7 7 .49 -176.66 -178.33 -184.19 -184.19 -188.38 -181.68 -180.01 -180.01 -180.01 -182.52 -181 .68 -180.01 -179.17 -176 .66 -174.15 -172.47  -162.14 -161.34 -163.73 - 1 6 2 .14 -162.9 3 - 1 6 2 . 14 -162 .93 -162.93 -163.73 -159.74 -15 8.15 - 1 5 8 . 95 -16 2.14 -163.73 -167.72 -166.92 -169.31 -174.10 -166.92 -1.71.71 -170.11 -.169.31 -166.92 -171.71 -166.92 -169.31 -165.33 - 1 6 7 . 72 -169.31 -171.71 -170.11 -16.9.31 -167.72 -171.71 -171.71 -171.71 -170.91 -171.71 - 1 7 0 . 91 -171.71 -171.71 -173.30 -172.50 -172.50 -169.31 -164.53 -163.73 -164.5 3  0030 0100 0130 0200 023 0 0300 0330 0400 0430 0500 0 530 0600 0630 0700 0730 0800 0830 0900 0930 1000 1030 1100 1130 1200 123 0 130 0 1330 1400 143 0 1500 1530 1600 1630 1700 1730 1800 18 3 0 1900 1930 2000 20 30 2100 2130 2200 2230 2300 2330  - 1 6 0 .57 -159.74 -163.07 -161.41 -161.41 - 161.41 - 1 6 0 .57 -162.24 -162.24 - 1 6 2 .24 -.15 6 . 4 1 -160.57 -161.4.1 -163.90 -167.24 - 165.57 -169.73 -171.40 -169.73 -168.90 -168.07 -169.73 -168.07 -170.57 -167.24 - 164.74 -163.90 - 1 6 5 .57 -167.24 - 1 6 9 .73 -166.40 -166.40 -168.07 -169.73 -170.57 -170.57 -168.07 -170.57 -169.73 -169.73 -171.40 -173.90 - 173.90 -173.07 -168.90 -164.74 - 1 6 3 .07 -163.90  DATE  A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14 A14  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  OOCC -200.55 0030 -2G0.55 0100 -201.30 0130 -200.55 0200 -199.04 0230 -199.80 0300 -201.30 0330 -204.31 0400 -205.06 0430 -203.55 0500 -204.31 0530 -203.55 0600 -207.31 0630 -208.82 0700 -209.57 0730 -208.06 0800 -209.57 0830 - 2 0 9 . 57 0900 -208.82 0930 -209.57 1000 -210.32 1030 -208.82 1100 -212.57 1130 -209.57 1200 -213.33 1230 -210.32 1300 -209.57 1330 -204.31 1400 -206.56 1430 -202.05 1500 -206.56 1530 -205.06 1600 - 2 0 6 . 5 6 1630 -205.06 1700 -208.06 1730 -211.07 1800 -210.32 1830 -213.33 1900 -214,83 1930 -216.33 2000 -221.59 2030 -221.59 2100 -220.84 2 1 3 0 - 2 2 2 . 3 5 2200 -221.59 2230 -220.09 2300 -221.59 2330 -220.84  -176.84 -177.66 -176.84 -176.84 -176.02 -176.84 -177.66 -177.66 -178.48 -177.66 -176.84 -177.66 -179.29 -179.29 -185.01 -182.56 -183.38 -182.56 -184.19 -184.19 -185.83 - 1 8 4 . 19 -186.64 -185.83 -186.64 -184.19 -183.38 -178.48 -183.38 -177.66 -178.48 -180.1.1 -183.38 -184.19 -183.38 - 1 8 2 . 5 6 - 1 8 5 .83 -185.83 -187.46 -191.54 -190.73 -195.63 -193.18 -193.99 -193.18 -190.73 -190.73 -189.09  - 9 0 CM DEPTH -172.47 -172.47 -171.63 -172.47 -173.31 -173.31 -171.63 -176.66 -176.66 -172.47 -173.31 -173.31 -175.82 -174.98 - 1 8 0 , 0 1 -180.01 -180.01 -179.17 -182.52 - 1 8 1 . 6 8 -184.19 - 1 8 0 . 0 1 -185.03 -184.19 -183.35 -180.01 -180.84 -177.49 -180.01 -177.49 - 1 7 6 . 6 6 - 1 7 9 . 17 -179.17 -181.63 -177,49 -184.19 -185 . 0 3 -183.35 -185.03 -185.87 -184.19 -188.38 -185.03 -183.38 -187.54 -186.70 -184.19 -180.84  1 2 0 CM DEPTH -164.53 -164.53 -162.14 -161.34 -162.14 -161.34 -160.54 -162.14 -163.73 -162.14 -167.72 -161.34 -164.53 -164.53 -167.72 -167.72 -171.71 - 1 7 0 . 11 -169.31 - 1 7 0 . 1 1 ' -174.10 - 1 7 0 . 1.1 -175.69 -175.69 -174.10 - 1 7 0 . 9 1 - 1 6 8 . 5 2 -167.72 -167.72 -166.92 - 1 6 6 . 1 2 -167.72 -170.91 -170.91 -166.92 - 1 7 2 . 5 0 -.173.30 - 1 7 1 . 7 1 -171.71 - 1 7 3 . 3 0 -170.11 -178.09 -173.30 -175.69 -172.50 -171.71 - 1 7 1 . 7 1 -16 7.72  1 5 0 CM DEPTH -162.24 -163.07 -165.57 -166.40 -166.40 -165.57 -165.57 -165.57 -163.07 -162.24 -162.24 -164.74 -166.40 -164.74 -165.57 -167.24 - 1 6 8 . 0 7 -165.57 -171.40 -168.90 -172.23 -166.40 - 1 7 3 . 9 0 -171.40 -169.73 - 1 6 8 . 9 0 -167.24 -167.24 -165.57 -163.07 -164.74 -169.73 -166.40 -169.73 -169.73 -171.40 -171.40 -171.40 -172.23 -172.23 -170.57 -177.23 -172.23 -174.73 -171.40 -173.90 -168.90 -167.24  DATE  A15 A15 A15 A15 A15 A 15 A15 A15 A15 A15 Al 5 A15 A 15 A15 A15 A15 A15 A15 A15 A15 A15 A15 A15 A15 A 15 A15 A15 A15 A15 A15 A15 A 15 A15 A15 A15 A 15 A15 A15 A15 A15 A15 A 15 A15 A15 A15 A15 A15 A15  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  OOOO 0030 0100 0130 02 0 0 0230 0300 0330 040 0 0430 0500 053 0 0600 0630 070 0 0730 0800 0830 090 0 0930 1000 103 0 1100 1130 1200 1230 1300 133 0 1400 1430 15 0 0 153 0 1600 1630 170 0 1730 1800 183 0 1900 1930 2000 2030 2100 2130 2200 22 30 2300 2330  218 .59 217.08 217.08 2 1 7 .84 217.84 217.08 217.08 2 1 7 .84 215.58 222.35 216 .33 219.34 219.34 221.59 219.34 221.59 221.59 222.35 222.35 223.85 223.85 222.35 222.35 218.59 219.34 220.09 218.59  -187.46 -185.83 -182.56 -185.01 - 1 8 2 .56 -183.38 -182.56 -180.93 -182.56 - 1 8 6 . 64 -183.38 -185.83 -185.01 -185.83 -188.28 -191.54 -187.46 -189.91 -188.28 - 1 9 0 . 73 -190.73 -189.91 -189.91 -187.46 -189.09 -189.91 -185.83 - 1 8 5 .83 -184.19 -189.09 -187.46 -189.91 -190.73 -193.99 -207.06 -210.33 -207.88 - 2 0 2 .98 -198,90 -204.61 -202.16 - 2 1 1 .15 -211.15 -208.70 -207.06 -202.98 - 2 0 2 .16 -202.98  -179.17 -178.33 -175.82 -177.49 - 1 7 6 .66 -177.49 -176.66 -175.82 -177.49 -178.33 -178 .33 -179.17 -178.33 -184.19 -185.0 3 -185.87 -181.68 -188.38 -185.03 -189.22 - 1 8 7 . 54 -185.87 -188.38 -186.70 -184.19 -183.35 -187.54 -184.19 -180.84 -173.33 -181.68 -185.03 -182.52 -189.22 -194.24 -200.10 -202.61 -192.56 -188.38 -193.40 -197.59 - 2 0 0 .94 -193.43 -195.91 - 1 9 5 .91 -190.05 -187.54 -190.05  - 1 6 6.92 -166.12 -163.73 -164.5 3 -163.7 3 -163.73 - 1 6 2 . 14 -163.73 -162.93 -165.33 -163.7 3 - 1 6 6 .12 -163.73 -166.92 -166.92 -171.71 -164.53 -172.50 -170.11 - 1 6 8 . 52 -172.50 -171.71 - 1 6 7 . 72  217 .84 215.58 219.34 2 1 7 .08 220.09 220.09 2 2 3 . 10 235.13 231.37 2 30.61 231.37 227.61 234.37 234.37 239.64 241.14 2 3 9 .64 237.38 236.63 235.88 236 .63  - 166.92 -170.91 -169.31 - 1 7 0 . 11 -171.71 -170.91 -166. 92 -166.92 -171.71 -174.10 -172.50 -182.87 -183.67 -181.28 -176.49 -180.48 -180. 4 8 -182.07 -18 7.66 -183.67 - 180.48 -178.88 -.174.90 -171.71 -175.69  -166.40 -165.57 -163.90 -163.90 -162.24 - 1 6 2 .24 -162.24 -163.07 -162.24 -163.07 -162.24 -164.74 - 1 6 3 .07 -164.74 -165.57 - 1 7 1 .40 -163.90 -169.73 -167.24 -168.90 -167.24 - 1 6 8 .90 -167.24 -168.07 -168.90 -167.24 -165.57 -168.07 -168.90 -163.07 -168.90 -168.07 -171.40 -173.07 -173.90 - 1 8 2 .23 -177.23 -173.90 -177.23 -174.73 -183.89 -184.73 -184.73 -179.73 -177.23 -176.40 -169.73 -173.90  DATE  A16 A16 A16 A16 A16 A16  A16 A16 A16  A 16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A 16 A16 A16 A16 A16 A 16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16 A16  A16  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  12.0 CM DEPTH  ooco  237.38 2 3 8 .88 239.64 239.64 2 37.38 2 38.13 238.88 244.15 238.88 2 42.64 236.63 239.64 241.14 238.13 2 3 8 .88 239.64 241.14 2 45.65 250.91 253.17 256.92 252.41 253.92 258.43 2 6 0 .68 259.18 248.66 244 .15 253.17 256.92 262.19 264.44 253.17 253.17 254.67 254.67 262.19 2 5 9 .18 260.68 261.43 264.4 4 2 6 9 ,70 2 70.45 268.20 26 8 . 2 0 267.45 262.94 262.94  -202.98 -202.98 -202.98 -201.35 -198.08 -199.71 -202.16 -202 .98 -198.90 -199.71 -194.81 -202 .16 -196.45 -192.36 -193.18 -198.90 -199.71 -205.43 -208.70 -212.78 -216.87 - 2 1 1 .15 -211.96 -216.87 -215.23 -216.05 -207.88 -210.33 -213 .60 -216.87 -216.87 -216.87 -216.87 -216.87 -216.87 -216.87 -216.87 - 2 1 6 .87 -216.87 -216.87 -216.87 - 2 1 6 .87 -216.87 -216.87 -216.87 -216.87 -216.87 -216.05  -191.73 -193.40 -185.87 -184.19 -185.03 -185 .03 -190.05 -186.70 - 1 8 4 . 19 -186.70 -187.54 -193.40 -1.82.52 -182.52 -185.03 -192.56 -193.40 -199.26 -201.77 -197.59 -205.12 -203.4 5 -205.96 -211.82 -208.47 -209.31 -197.59 -199 .26 -208 .47 -201.77 - 2 1 1 .82 -205.96 -206.80 -211.82 -208.4 7  -174.10 - 172.50 -171.71 - 1 7 0 . 11 -169.31 -174.90 -166.92 -170.11 -169.3 1 -171.71 -171.71 -171.71 -163.7 3 -167.72 -170.91 -174.10 -175.69 -179.68 -179.68 -178.09 -179.68 -192.44  003 0 01C0 0130 0200 02 3 0 0300 0330 0400 0430 0500 053 0  0600  0630 0700 073 0 08G0 0830 0900 0930 1000 103 0 1100 1130 1200 1230 1300 1330 1400 1430 1500 1530 1600 1630 1700 1730 1800 1830 1900 1930 2000 2030 2100 2130 2200 223 0 2300 2330  -206.80 "  -211.82  -211.82 - 2 0 1 .77 -205.96 -211.82 -211.82  -210.15'  -210.15 -209.31 -207.64 -208.47 -204.29  -183 .67  -188.45 -194.C4 -189.25 -180.48 -.178. 8 8 -179.68 -182.07 -194.04 -190.05 -183.67 -187. 66 -195.63 -188.45 -194.04 - 1 9 0 . 05 -182.07 -188.45 -190.85 -.191.64 -195.63 -191. 64 -192,44 -188.45 -190.0 5 -186.06  -172.23  -170.5 7 - 1 6 9 .7.3 -168.07 -171.40 -170.57  -168.07  -167.24 -165.57 -164.74 -165.57  -170.57  - 1 6 2 .2,4 -163.90 -168.07 -170.5 7 -176.40 -188.06 -173.90 -178 .06 -178.06 - 182.23 -183.06 -188.06 -191.39 -189.72 -182 .23 -179.73 -183.06 -178 .90 -188.06 - .189. 72 - 1 8 8 .06 -188.06 -188.89 -19.3.89 -196.39 -193.89 -188.06 -189.72 -194.72 - 198.88 -202.22 -195.5 5 -193.89 -190.56 -190.56 -179.73  DATE  A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A 17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 A17 STOP EXECUTION  0 TERMINATED  TIME (HOURS)  3 0 CM DEPTH  6 0 CM DEPTH  9 0 CM DEPTH  1 2 0 CM DEPTH  OOOO 00 30 0100 013 0 0200 0230 0300 0330 0 400 0430 0500 0530 0600 0630 0700 073 0 080 0 0830 0900 0930 1000 1030 1100 1130 1200 1230 130 0 1330 1400 143 0 150 0 1530 1600 1630 1700 1730 1 8CC 1830 1900 1930 2000 2030 2100 2130 2200 2230 23GC 2330  - 2 6 2 . 19 -260.68 -262.19 -256.92 -256.92 -255.42 -259.18 -260.68 -262.19 -262.19 - 2 6 3 . 69 -264.44 -264.44 -268.20 -271.96 -279.47 -275.72 -27 7.97 -276.47 -279.47 - 2 7 9 . 47 -278.72 -274.21 -271.21 -271.96 -270.45 -265.94 -265.94 -266.70 -262.94 -268.20 -264.44 -264.44 - 2 6 5 . 94 -273.46 - 2 7 4 .21 -268.95 -272.71 - 2 7 1 .96 -277.22 -275.72 -278.72 - 2 8 0 .98 -283.23 -283.23 -280.23 -271.96 -274.21  -215.23 -214.42 -208.70 -207.06 -208.70 -206.25 -214.42 -214.42 -213.60 -209.51 -211.96 -214.42 -215.23 -216.87 - 2 1 6 . 87 -216.87 -228.30 - 2 2 9 . 12 -226.67 -234.02 -235.65 -230.75 -222.58 -225.03 -226.67 -223.40 -219.32 - 2 2 0 . 13 -220.13 -218.50 -220.95 -219.32 - 2 2 1 .77 -227.48 -229.12 -229.94 -225.03 -229.12 -231.57 -235.65 -234.84 -232.39 -238.10 -237.29 - 2 3 7 . 29 -233.20 -223.40 -228.30  -200.94 -197.59 - 1 9 5 .08 -193.40 -192.56 -193.40 -196.75 -196.75 -192.56 - 1 9 5 .08 -194.24 -195.08 -201.77 -204.29 -211.82 -211.82 -214.33 -216.84 - 2 1 9 .36 -223.54 -216.01 -216.01 -214.33 -211.82 - 2 1 8 . 52 -214.33 -203.4 5 -213.50 -205.9 6 -206.80 -206.80 -208.47 - 2 0 0 .94 -209.31 -211.82 -215.17 -210.15 -216.01 - 2 1 6 .84 -217.68 -216.0,1 - 2 1 6 .84 -216.84 -220.19 -218.52 -218.52 -205 .96 -205.96  -181.28 -174.90 -173.30 -174.90 -171.71 -175.69 -174.10 -172.50 -172.5 0 -174.10 -174.90 -174.10 -182.07 -185.26 -189. 25 -194.04 - 1 9 1 .64 -197.23 - 1 9 8 . 82 -193.24 -194.04 -195.63 -187.66 -192.44 - 1 8 7 . 66 -186.C6 -179.68 -184.47 -186.C6 -184.47 -182.87 -185.26 -183.67 -186.86 - 1 9 1 . 64 -194.04 -182.07 - 1 8 6 . 06 -184.47 -182.87 -182.87 -194.04 -194.04 -190.85 -193.24 -193.24 -182.07 -182.07  -175.56 -172.23 -170.57 -173.07 -173.90 -173.90 -173.07 -170.57 -168.90 -170.57 - 1 7 3 .07 -173.07 -186.39 - 1 9 0 .56 -191.39 -193.05 -193.89 -199.72 -196.39 -196.39 - 1 9 3 .89 -194.72 -190.56 - 1 9 1 .39 -188.06 -190.56 -180.56 -185.56 -185.56 -179.73 - 1 8 1 .39 -183.89 - 132.23 -179.73 -191.39 -192.22 - 1 8 8 .06 -183.89 -188.06 -188.06 - 1 9 0 .56 - 1 9 3 . 89 -194.72 - 1 9 3 .05 -196.3 9 -188.06 -182.23 -183.06  APPENDIX: V  an D a i l y H y d r a u l i c Head and M a t r i c Suction  Values  for F i v e S o i l Depths f o r the Duration  of the  Study  Date  a  9 10 11 12 13 14 15 16 17 18 19 20 21 22  T*  30  -94.20 -103.11 -113.91 -125.82 -137.99 -153.15 -167.20 -183.14 -215.81 -237.89 -248.66 -273.70 -296.30 -325.43 -337.78  * H*  T  60  -112.20 -133.11 -143.91 -155.82 -167.99 -183.15 -197.20 -213.14 -245.81 -267.79 -278.66 -303.70 -326.30 -355.43 -367.78  -56.48 -61.64 -67.04 -72.64 -78.40 -84.83 -92.51 -102.18 -116.03 -124.82 -139.59 -156.44 -174.91 -195.31 -210.32  H  -116.48 -121.64 -127.04 -132.64 -138.40 -144.83 -152.51 -162.18 -176.03 -184.82 -199.59 -216.44 -234.91 -255.31 -270.32  • s o i l water suction in cm. H„0 * ^ * t o t a l potential in cm. H90  Depth (cm.) 90 T H -42..68 -44.71 -47.48 -50.81 -54.49 -58.66 -63..42 -68.57 -78.81 -83.54 -87.99 -104.52 -117.50 M30.72 -137.83  -132.68 -134.71 -137.48 -140.81 -144.49 -148.66 -153.42 -158.57 -168.81 -173.54 -177.99 -194.52 -207.50 -220.72 -227.83  T  120  -13.04 -14.37 -16.25 -19.63 -20.14 -22.16 -24.56 -26.85 -31.55 -32.90 -34.43 -39.53 -43.57 -48.17 -50.23  H  -133.04 -134.37 -136.25 -139.63 -140.14 -142.16 -144.56 -146.85 -151.55 -.152.90 -154.43 -159.53 -163.57 -168.17 -170.23  T  150  23.57 21.18 19.20 18.63 17.65 17.13 13.20 7.30 4.69 4.12 3.56 -0.60 -1.22 -4.75 -5.28  H  -126.43 -128.82 -130.80 -131.37 -132.35 -132.87 -136.80 -142.70 -145.31 -145.88 -146.44 -150.60 -151.22 -154.75 -155.28  APPENDIX. VI  The Determination of the Hydraulic Conductivity  Characteristic  The  h y d r a u l i c c o n d u c t i v i t y , k(T) was c a l c u l a t e d according tD the  fallowing  equation: C k(T)  2> [ L  d (I/I )/dt]  i  s  x 1440 min./day  = dH/dZ  where  C = the slope of the neutron moisture meter c a l i b r a t i o n curve  (0.491 (cm  3  cnf )/I/I ) 3  s dt = time i n t e r v a l  (min.)  L. = depth i n t e r v a l a s s o c i a t e d with measured I / I _ (cm.) X  —  5  = hydraulic gradient  d(I/I ) s  -1 change i n r a t i o of neutron meter counts min. to neutron meter standard  counts min.  f o r time i n t e r v a l  dt I  ~ depth (cm.)  T ~ t e n s i o n at 75 cm. n = number of depth intervals The  h y d r a u l i c head g r a d i e n t , dH/dZ, i s computed by d i v i d i n g the  mean d i f f e r e n c e i n H at 60 cm. and 75 cm. depths by 15 cm. i s assumed t o be the h y d r a u l i c g r a d i e n t at 75 cm. The  above equation  i s d e r i v e d by d i f f e r e n t i a t i n g the neutron  meter c a l i b r a t i o n equation Rose's  The  with r e s p e c t to time and using  equation.  graph of k vs. T appears i n Figure 6 i n Chapter I I .  This  Determination  Time, t (min.)  0  i = 6 0 cm. T*  H*  9.30  T*  H *  -69.31  9.29  -84.29  -72.59  9.59  -84.59  15  12.59  45  31.84 -91.84  135  I = 7 5 cm.  4 5 . 9 0 -•105.90  4 5 . 6 1 - 120.61  1005  100.43- 160.43  86.23- 161.23  1155  1 0 4 . 8 7 -•164.87  91.15- 166.15  1440  113.25- 173.25  100.05- 175.05  2865  1 4 1 . 6 0 -•201.60 1 2 8 . 7 8 - 2 0 3 . 7 8  6795  1 6 4 . 9 5 -•224.95 1 5 0 . 9 7 - 2 2 5 . 9 7  9675  1 6 8 . 4 3 -•228.43 1 5 5 . 1 0 - 2 3 0 . 1 0  * cm.  of  H 0 o  Characteristic  L. d ( I / I ) d e p t h i n t e r v a l s o f l 0-37.5 67.5-75 37.5-52.5 52.5-67.5 s  £L.d(I/l ) s  1  (cm.)  k (T) cm./day  (cm.)  (cm.)  (cm.)  0.89  1.5021  0.5183  0.4062  0.2370  2.6636  139.55  0.69  1.9630  0.7221  0.4388  0.3251  3.4490  117.32  0.55  0.3997  •.2110  0.2995  0.1225  1.0327  14.56  0.48  0.0181  0.0056  0.0183  0.0021  0.0441  1.06  0.24  0.0572  0.0236  0.0376  0.0227  0. 1 4 1 1  0.51  0.06  0.0010  0.0003  D.0006  0.0005  0.0024  0.16  0.10  0.0026  0.0009  0.0D19  0.0007  0.0054  0.13  0.13  0.0091  0.0045  0.0185  0.0027  0.0348  0.13  0.10  0.0262  0.0060  0.0205  0.0066  0.0593  0.10  0.09  D.0071  0.0065  0.0082  0.0018  0.0236  0.06  0.11  0.0372  0.0060  0.0075  0.0071  0.0578  0.05  (cm.)  38.81- 113.81  54.10- 114.10  174.11- 234.11  dH dZ  Conductivity  25.62- 100.62  195  16830  of Hydraulic  160.90- 235.90  -kS-  APPEWDIX VII  Computation of Root Zone Drainage Using the Darcy Law Method  Addendum  1.  Total  potential values  computed  2.  Matric are  3.  The h y d r a u l i c  Z  k.  = 6 0 cm.  at soil  Matric  depths daily  suction  by a v e r a g i n g  gradient,  values  the values  = 75  values  at soil  half  depth  Z = 75  cm.  f o r Z = 6 0 cm.  a n d 90  cm.  by s u b t r a c t i n g  the total  suction,  the  potential at  difference,  k ( T ) ,i s taken  at the matric  from  cm.  from  30  the  T, a t s o i l  cm.  hydraulic depth  cm.  Drainage, gradient  computed  dH/dZ, i s c o m p u t e d  conductivity, curve  daily  Z = 6 0 cm. a n d Z = 9 0  values  a n d d i v i d i n g by t h e d e p t h  conductivity  5.  values  and a r e average  values.  p o t e n t i a l a t Z = 9 0 cm. f r o m  The h y d r a u l i c  Z  hourly  and a r e average  values.  computed  total  half  suction  negative  hourly are  from  are negative  D,  i s computed  and h y d r a u l i c  as t h e n e g a t i v e  conductivity.  product  of the  hydraulic  CALCULATION OF ROOT ZONE DRAINAGE USING THE DARCY LAW METHOD  Date  8 9 10 11 12 13 14 15 16 17 18 19 20 21 22  Total Potential (cm. H20) .=60 1=90  -116.48 -121.64 -127.04 -132.64 -138.40 -144.83 -152.51 -162.18 -176.03 -184.82 -199.59 -216.44 -234.91 -255.31 -270.32  -132.68 -134.71 -137.48 -140.81 -144.49 -148.66 -153.42 -158.57 -168.81 -173.54 -177.99 -194.52 -207.50 -220.72 -227.83  Matric Suction (cm. H2O) Z = 60 Z = 75 Z = 90  56.48 61.64 67.04 72.64 78.40 84.83 92.51 102 ..18 116.03 124.82 139.59 156.44 174.91 195..31 210.32  49.58 53.18 57.26 61..73 66.45 71.75 77.97 85.38 97.42 104.18 113..79 130.48 146.21 163.01 174.08  42.68 44.71 47.48 50.81 54.49 58.66 63.42 68.57 78,81 . 83.54 87.99 104.52 117.50 130.72 137.83  d  . JL /i m m */day  H  /., d  -16.20/30 -13.07/30 -10.44/30 -8.17/30 -6.09/30 -3.83/30 -0.91/30 3.61/30 7.22/30 11.28/30 21.60/30 21.92/30 27.41/30 34.59/30 42.49/30  Z  -.54 -.44 -.35 -.27 -.20 -.13 -.03 .12 .24 .38 .54 .73 .91 1.15 1.42  12.07 9.55 8.94 6.48 4.85 4.08 3.40 2.25 2.21 1.47 1.35 0.99 0.82 0.73 0.58  m  m  m m  /  H  '/daV  +6.52 +4.20 +3.13 + 1.75 +0.97 +0.53 +0.10 -0.27 -0.53 -0.56 -0.98 -0.72 -0..75 -0.84 -0.83  fl.PPE.NDIX VIII  Computation of Root Zone Drainage Using the Water Balance Equation  Addendum  Root zone s o i l mater storage calculated by multiplying 30 cm. s o i l depth water content by 45 cm. and adding that value to the 60 cm. s o i l depth water content multiplied by 30 cm. Evapotranspiration values developed by Dr. T . A . Black, using Bowen ratio/energy balance method. Drainage, D, i s calculated by subtracting the daily evapotranspiration from the daily root zone s o i l water storage change.  CALCULATION OF ROOT ZONE STORAGE USING UATER BALANCE METHOD  Date  7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22  Root Zone S o i l Water Storage 0 - 4 5 cm. 45 - 75 cm. 0 - 7 5 cm. cm. cm. cm.  12.735 11.925 11.295 10.845 10.395 10.035 9.810 9.585 9.405 9.225 9.090 8.955 8.865 8.730 8.685 8.640  7.350 6.960 6.660 6.420 6.210 6.060 5.910 5.760 5.610 5.490 5.340 5.190 5.070 4.950 4.890 4.860  20.085 18.885 17.955 17.265 16.605 16.D95 15.720 15.345 15.015 14.715 14.430 14.145 13.935 13.680 13.575 13.500  Change i n Root Zone Storage mm.  12.00 9.30 6.90 6.60 5.10 3.75 3.75 3.30 3.00 2.85 2.85 2.10 2.55 1.05 0.75  Evapotranspiration mm./day  4.34 4.39 4.03 4.20 4.15 4.08 4.65 4.80 2.40 3.84 4.29 3.61 3.10 1.46 3.18  Drainage mm./ ay  +7.66 +4.91 +2.87 +2.40 +0.95 -0.33 -0.90 -1.50 +0.60 -0.99 -1.44 -1.51 -0.55 -0.41 -2.43  APPEIMDIX  IX  Comparison of Root Zone S o i l Water Depletion from Measured Values and Values Calculated Using Darcy Law Root Zone Drainage  T  1  1  1  1  1  1  1  1  1  1  1  1  1  I  I  I  I  I  1  L  I  I  I  J  I  I  I  1  8  9  IO  II  IZ  13  14  15  <G>  IT  IS  19  a©  TIME  (JULY  DAYS)  r  I  I  2 1 22.