Water Quality Data from the Intake Channel of the Tracy Fish Collection Facility, Byron, California
Summary of Percentiles by MONTH of YEAR (_mm)
Water Quality Multiprobe located in Intake Channel of the Tracy Fish Collection Facility, Tracy, California 37°48'54" N 121°33'30" W
Summaries Based on Period of Record April 1, 2000 through February 15, 2007  <>  Measurements at 30-min limits <>  2,512 days, 120,552 observations 
Bureau of Reclamation Validated Water Quality Data <> Contact:  Doug Craft  dcraft@do.usbr.gov   303-445-2182  <>  TRACY FISH FACILITY IMPROVEMENT PROGRAM  <>  http://www.usbr.gov/pmts/tech_services/tracy_research/
Key to Variable Names:  VARIABLE_PERCENTILE_SUMMARY  - To export this data table to Microsoft Excel: 1. From this browser: File -> Save As -> "your file name.htm"  2. From Excel: Data -> Import External Data -> Import Data -> "your file name.htm"
Variables T_ Channel Water Temperature(T), measured in Degrees Celsius, °C
EC_ Electrical Conductivity (EC), measured in microSiemens per centimeter, µS/cm
DOpct_ Percent Dissolved Oxygen Saturation in Water (DOpct), measured in percent, %
DO_ Dissolved Oxygen (DO), measured in milligrams per liter, mg/L
pH_ Hydrogen Ion Activity in Water (pH), measured in standard units, s.u.
Eh_ Oxidation-Reduction Potential, Redox, (Eh),  measured in millivolts, mV
Turbidity_ Turbidity, measured in Nephelometric Turbidity Units, NTU  <> Turbidity values > 195 NTU are beyond probe calibration range, Lower Detection Limit ~ 1 NTU
Percentiles _05th_ 5th Percentile - approximates the lower 95% confidence limit
_16th_ 16th Percentile - approximates the lower 68% confidence limit
_25th_ 25th Percentile - LOWER value of Interquartile Range
_Median_ 50th Percentile - approximates the mean or average
_75th_ 75th Percentile - UPPER value of Interquartile Range
_84th_ 84th Percentile - approximates the upper 68% confidence limit
_95th_ 95th Percentile - approximates the upper 95% confidence limit
Variable Summary Suffixes _dyr Summary by Day of Year
_ww Summary by Week of Year
_mm Summary by Month of Year
_sd Summary by continuous STUDY DAY (since April 1, 2000)
_sw Summary by continuous STUDY WEEK (since April 1, 2000)
_sm Summary by continuous STUDY MONTH (since April 1, 2000)
Month Month_Num T_05th_mm T_16th_mm T_25th_mm T_Median_mm T_75th_mm T_84th_mm T_95th_mm EC_05th_mm EC_16th_mm EC_25th_mm EC_Median_mm EC_75th_mm EC_84th_mm EC_95th_mm DOpct_05th_mm DOpct_16th_mm DOpct_25th_mm DOpct_Median_mm DOpct_75th_mm DOpct_84th_mm DOpct_95th_mm DO_05th_mm DO_16th_mm DO_25th_mm DO_Median_mm DO_75th_mm DO_84th_mm DO_95th_mm pH_05th_mm pH_16th_mm pH_25th_mm pH_Median_mm pH_75th_mm pH_84th_mm pH_95th_mm Eh_05th_mm Eh_16th_mm Eh_25th_mm Eh_Median_mm Eh_75th_mm Eh_84th_mm Eh_95th_mm Turbidity_05th_mm Turbidity_16th_mm Turbidity_25th_mm Turbidity_Median_mm Turbidity_75th_mm Turbidity_84th_mm Turbidity_95th_mm
January 1 6.7 8.0 8.3 9.4 10.3 10.7 11.4 198 257 286 437 539 596 794 53.4 61.4 65.6 74.3 85.4 88.2 92.7 6.05 6.87 7.33 8.30 9.91 10.39 11.04 6.99 7.08 7.13 7.32 7.49 7.58 7.76 194 256 268 310 366 421 530 1.3 3.1 4.2 13.1 21.1 25.5 69.2
February 2 8.4 9.5 10.1 11.2 12.2 12.7 13.5 222 263 289 348 445 463 806 50.6 59.9 69.1 81.5 86.0 87.9 90.5 5.36 6.48 7.60 8.86 9.56 9.89 10.40 7.07 7.17 7.20 7.25 7.34 7.40 7.65 201 240 256 309 381 404 554 1.0 2.3 3.5 7.4 19.3 24.8 33.2
March 3 11.2 12.1 12.7 14.0 15.7 16.6 17.7 223 248 292 390 524 692 956 53.9 63.8 71.1 81.1 87.3 90.1 99.4 5.47 6.47 7.23 8.36 9.15 9.43 10.07 7.03 7.23 7.29 7.39 7.50 7.71 8.13 216 262 273 330 441 488 546 1.1 2.0 2.7 9.2 21.9 27.7 40.3
April 4 13.9 14.9 15.5 16.6 17.8 18.3 19.2 188 215 248 291 368 442 643 41.1 63.3 69.5 79.5 88.5 92.2 101.2 4.04 6.11 6.80 7.79 8.61 8.99 9.70 7.07 7.21 7.27 7.54 7.76 7.85 8.22 178 249 258 333 400 457 526 3.2 5.9 7.3 12.5 25.7 30.1 39.7
May 5 16.9 17.8 18.2 19.3 21.1 21.9 23.5 129 152 274 348 400 445 541 51.4 58.7 63.6 71.2 79.5 83.0 89.4 4.71 5.37 5.83 6.52 7.33 7.66 8.17 6.96 7.19 7.28 7.42 7.56 7.65 7.79 223 260 282 347 437 493 548 3.6 5.5 7.3 16.0 27.2 32.3 44.8
June 6 19.3 20.6 21.2 22.2 23.3 24.0 24.9 134 146 158 268 340 377 502 50.8 67.2 72.2 80.2 87.5 91.7 99.1 4.47 5.80 6.23 6.88 7.62 8.05 8.81 6.87 7.07 7.19 7.40 7.63 7.73 7.86 252 277 309 382 421 446 521 3.9 7.3 12.1 25.3 38.0 45.3 70.0
July 7 22.6 23.3 23.7 24.6 25.6 26.1 26.9 156 186 205 246 305 330 407 57.3 68.3 74.2 81.8 88.3 91.1 97.0 4.64 5.61 6.12 6.80 7.41 7.66 8.19 6.85 7.10 7.23 7.47 7.63 7.72 7.98 255 324 352 453 501 516 556 5.7 8.9 11.4 18.6 27.3 32.8 45.3
August 8 22.8 23.2 23.5 24.0 24.5 24.9 25.7 225 248 268 315 403 447 507 54.8 66.9 74.4 84.5 90.2 92.3 96.2 4.59 5.64 6.24 7.11 7.60 7.79 8.12 7.11 7.32 7.43 7.62 7.92 8.08 8.20 240 277 309 418 479 498 565 3.4 6.5 9.2 15.5 24.7 33.0 53.4
September 9 20.2 20.8 21.3 22.2 23.0 23.3 24.0 268 288 301 367 490 534 582 59.5 74.9 80.6 88.0 93.5 97.4 119.2 5.13 6.65 7.04 7.63 8.11 8.54 10.49 7.09 7.19 7.33 7.63 7.85 7.93 8.04 177 226 238 331 420 485 556 2.3 4.0 5.9 11.7 25.2 34.3 48.3
October 10 15.5 16.8 17.4 18.8 19.8 20.5 21.3 263 341 370 462 507 529 594 66.4 75.3 78.7 84.0 88.5 90.9 97.2 6.16 7.00 7.28 7.81 8.37 8.55 9.06 7.23 7.40 7.45 7.54 7.62 7.67 7.79 197 236 253 301 348 390 511 1.0 2.4 3.8 11.3 20.9 29.0 196.0
November 11 10.6 11.8 12.9 14.3 15.1 15.7 16.5 296 376 401 463 528 564 718 62.9 72.9 76.1 81.9 86.4 88.6 92.5 6.62 7.43 7.77 8.38 9.07 9.44 9.92 7.30 7.37 7.42 7.51 7.59 7.64 7.77 209 254 284 319 388 439 506 1.2 3.8 5.9 10.9 21.6 36.5 196.0
December 12 8.5 9.1 9.4 10.1 10.8 11.2 11.9 395 422 467 522 591 633 756 69.0 74.9 77.0 81.7 87.8 90.1 93.0 7.73 8.46 8.78 9.37 10.01 10.28 10.69 7.22 7.30 7.33 7.46 7.59 7.67 7.88 234 261 276 328 424 461 488 0.9 1.7 2.8 8.1 19.2 26.4 83.3