TRACY PUMPING PLANT, CALIFORNIA

Monthly Total Growing Degree Days

(049001)

Base Temperature = 40 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1955 0.00 z 224.50 457.50 447.41 a 230.50 t 873.50 1014.70 c 0.00 z 0.00 z 767.77 a 411.00 327.00 4523.38
1956 276.50 228.00 432.89 c 551.50 503.50 i 1004.48 a 1091.00 1051.00 973.50 712.00 413.00 187.00 6920.88
1957 130.00 353.00 498.50 437.50 g 736.25 c 1077.00 1181.10 a 1033.33 a 994.50 478.50 j 399.50 200.50 6603.68
1958 182.79 b 382.00 317.23 a 578.50 825.50 901.00 1082.23 c 1244.50 1060.50 858.00 476.50 327.00 8235.76
1959 287.00 278.50 550.00 752.00 797.00 1002.00 1220.00 1119.50 951.00 868.50 414.00 210.50 8450.00
1960 198.00 319.00 531.50 597.00 779.00 1130.50 1193.50 1106.00 999.50 750.00 405.50 152.00 8161.50
1961 128.50 373.50 456.50 595.00 336.00 o 1102.20 e 1221.00 1153.50 928.00 761.00 342.00 153.00 7214.20
1962 78.00 216.50 368.50 689.00 348.00 p 946.80 e 1133.16 c 1091.50 933.50 720.50 486.43 b 205.00 6868.89
1963 84.00 486.00 428.50 441.50 578.00 g 913.50 1031.50 1065.50 1028.57 b 795.50 352.00 60.50 6687.07
1964 187.50 311.00 413.69 b 621.60 e 717.28 b 889.66 a 1106.59 c 1112.00 921.50 845.50 322.00 322.00 7770.31
1965 195.50 287.00 454.00 566.90 a 787.50 800.00 1079.50 1114.00 815.69 a 816.00 451.50 78.00 7445.59
1966 174.50 220.50 467.58 a 737.00 828.00 998.50 1006.50 1169.50 977.50 751.50 440.00 196.00 7967.08
1967 204.00 241.50 396.50 314.50 776.50 882.50 1210.50 1248.00 1038.00 809.50 509.50 134.50 7765.50
1968 142.00 427.50 495.00 638.50 725.92 a 1006.50 1108.52 b 990.45 a 847.24 a 722.00 382.00 153.50 7639.12
1969 183.93 a 225.00 418.50 538.00 864.90 a 832.50 d 1166.50 1201.50 1046.00 671.00 403.00 286.00 7836.83
1970 332.00 352.50 495.00 508.97 a 887.12 a 945.00 1160.50 1078.50 985.50 700.50 466.50 214.00 8126.08
1971 171.00 257.50 430.00 515.00 688.00 906.50 1128.40 a 1163.03 b 1021.50 667.50 411.50 134.85 a 7494.78
1972 79.00 359.00 652.00 621.00 865.00 1004.00 1121.37 e 1120.65 a 912.00 696.50 332.50 157.50 7920.52
1973 184.50 329.50 363.50 611.50 904.00 1069.50 1138.50 1089.81 b 949.50 714.00 414.00 244.50 8012.81
1974 229.00 260.00 478.50 550.00 790.50 b 964.29 b 1126.00 1118.00 1048.50 823.50 394.00 188.00 7970.29
1975 144.00 312.50 411.50 433.00 862.50 931.50 1046.00 1064.13 e 993.50 684.00 371.00 202.02 a 7455.65
1976 207.00 340.50 483.60 a 565.50 880.50 977.00 1099.50 1004.50 978.00 820.00 466.00 182.50 8004.60
1977 134.00 368.85 b 445.50 730.00 642.00 996.21 a 1113.50 1121.68 a 934.50 839.07 a 499.50 343.58 a 8168.39
1978 299.00 337.00 574.00 540.00 881.00 940.50 1114.93 b 1128.50 733.50 g 838.00 353.50 117.00 7123.43
1979 196.50 271.50 465.00 579.50 900.00 1005.00 1169.73 a 1085.50 1095.00 836.47 b 395.50 249.50 8249.20
1980 283.50 378.50 454.00 601.55 a 739.00 839.00 1134.50 1052.45 a 958.39 b 831.00 492.50 223.00 7987.39
1981 262.00 365.00 438.13 a 658.97 a 893.00 1147.22 c 1161.50 1106.50 991.50 681.00 501.00 329.50 8535.32
1982 99.50 342.50 382.50 549.50 847.50 817.00 1081.00 1065.50 946.00 749.50 291.00 240.00 7411.50
1983 150.50 326.50 458.50 501.50 775.00 956.50 1050.50 1145.00 1060.00 842.00 427.00 344.00 8037.00
1984 213.50 304.00 584.50 580.50 948.50 969.50 1226.50 1141.50 1127.00 716.00 396.00 165.00 8372.50
1985 69.50 319.00 365.50 714.50 763.50 1102.50 1244.50 1081.00 861.00 764.00 0.00 z 132.00 7417.00
1986 337.00 398.50 571.50 596.00 851.00 978.00 1108.50 1123.50 817.00 771.50 485.50 132.00 8170.00
1987 166.50 321.00 449.00 732.00 927.86 b 955.86 a 982.38 b 1077.50 940.50 375.50 q 248.00 m 122.00 q 6552.60
1988 99.50 p 176.00 l 360.50 j 318.50 n 381.00 n 666.00 i 639.50 o 822.50 i 512.00 n 511.50 l 263.00 l 124.50 j 0.00
1989 69.00 l 145.00 j 502.50 700.00 838.66 c 966.50 746.00 k 1082.00 482.50 n 487.00 j 434.00 86.50 m 4523.66
1990 125.50 m 156.00 i 551.50 520.00 i 528.50 k 665.00 j 1194.50 827.00 i 1038.10 a 848.50 299.00 i 82.00 i 3632.60
1991 132.50 j 254.00 k 370.50 378.50 i 704.45 b 524.00 k 1071.00 684.00 j 696.00 j 901.00 271.00 m 88.00 n 3046.95
1992 84.50 n 406.50 536.00 372.50 o 1038.00 997.50 1141.83 a 848.50 i 1022.07 a 887.00 251.50 m 150.50 k 6028.90
1993 189.50 280.50 586.50 610.50 465.00 m 499.00 o 1126.00 1119.00 651.00 j 827.50 402.00 175.50 5317.00
1994 174.50 231.00 524.00 625.38 d 756.00 946.50 1107.00 1144.50 983.50 764.50 312.50 167.00 7736.38
1995 364.00 355.00 432.00 559.00 724.50 924.50 1092.00 1167.00 962.00 859.00 643.50 387.00 8469.50
1996 306.00 404.50 544.50 712.50 888.50 1050.00 1249.50 1193.50 930.50 759.50 488.50 344.00 8871.50
1997 288.50 391.00 619.50 729.50 1022.50 977.00 1161.00 655.00 l 1082.50 800.50 526.00 189.50 7787.50
1998 290.50 301.00 491.50 574.00 621.50 861.50 1150.50 1213.50 1054.50 746.00 465.00 165.85 a 7935.35
1999 205.50 296.50 400.42 a 596.00 752.00 942.50 1081.50 1079.00 1016.00 869.00 503.50 269.50 8011.42
2000 348.50 392.00 543.00 702.50 853.00 1075.00 1038.50 1116.50 1004.00 744.00 311.00 254.50 8382.50
2001 195.00 296.00 611.00 563.50 1107.00 1090.50 1109.50 1143.50 1008.50 860.00 517.00 267.00 8768.50
2002 196.00 343.50 452.50 640.50 819.50 1004.00 1160.50 1103.50 1041.50 783.00 472.50 302.50 8319.50
2003 319.50 330.50 578.50 499.00 837.50 1003.50 1269.00 1124.00 1073.50 913.00 391.50 294.50 8634.00
2004 224.50 320.00 662.00 731.00 865.00 992.50 1153.50 1148.00 1032.50 768.50 375.50 252.00 8525.00
2005 188.00 379.00 537.50 607.00 845.50 925.00 1257.00 1212.50 925.50 814.50 536.00 335.00 8562.50
2006 320.50 345.50 331.50 552.00 891.77 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2441.27
Period of Record Statistics
MEAN 209.15 324.79 479.68 597.02 828.39 970.69 1130.96 1118.09 984.65 786.57 428.52 222.12 8097.25
S.D. 77.62 60.50 81.49 92.08 97.94 80.96 67.00 56.35 69.81 65.11 71.30 79.52 378.86
SKEW 0.20 0.05 0.23 -0.43 0.41 0.08 0.05 0.24 -0.50 -0.06 0.36 0.18 0.01
MAX 364.00 486.00 662.00 752.00 1107.00 1147.22 1269.00 1248.00 1127.00 913.00 643.50 387.00 8871.50
MIN 69.50 216.50 317.23 314.50 621.50 800.00 982.38 990.45 815.69 667.50 291.00 60.50 7411.50
NO YRS 46 48 51 47 44 47 49 45 45 47 45 45 35