TRACY PUMPING PLANT, CALIFORNIA

Monthly Total Growing Degree Days

(049001)

Base Temperature = 50 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 19.00 152.00 151.03 a 120.50 t 573.50 704.70 c 0.00 z 0.00 z 457.77 a 154.50 68.00 2280.50
1956 34.50 23.00 137.29 c 256.50 283.50 i 704.48 a 781.00 741.00 673.50 402.00 134.00 34.00 3921.27
1957 9.00 114.00 190.50 207.50 g 426.25 c 777.00 871.10 a 723.33 a 694.50 268.50 j 111.50 15.50 3932.68
1958 16.57 b 108.50 40.30 a 283.50 515.50 601.00 772.23 c 934.50 760.50 548.00 201.00 56.00 4837.60
1959 58.00 35.00 240.00 452.00 487.00 702.00 910.00 809.50 651.00 558.50 119.50 18.50 5041.00
1960 27.50 50.00 222.00 298.50 469.00 830.50 883.50 796.00 699.50 440.00 128.00 18.00 4862.50
1961 13.00 96.50 149.00 305.50 176.00 o 802.20 e 911.00 843.50 628.00 451.00 72.00 20.50 4292.20
1962 0.00 34.50 81.50 389.00 198.00 p 646.80 e 823.16 c 781.50 633.50 410.50 192.32 b 53.00 4045.78
1963 15.50 206.00 132.00 146.50 338.00 g 613.50 721.50 755.50 728.57 b 485.50 101.00 0.00 3905.57
1964 9.50 49.50 130.95 b 322.20 e 409.41 b 589.66 a 796.59 c 802.00 621.50 535.50 84.00 98.00 4448.81
1965 14.50 53.00 144.00 280.34 a 477.50 500.00 769.50 804.00 515.69 a 506.00 183.50 0.00 4248.03
1966 11.00 17.00 183.42 a 437.00 518.00 698.50 696.50 859.50 677.50 441.50 162.50 23.50 4725.92
1967 27.50 23.00 104.00 39.50 466.50 582.50 900.50 938.00 738.00 499.50 234.50 12.00 4565.50
1968 9.00 156.00 185.00 339.00 417.47 a 706.50 798.52 b 680.45 a 547.24 a 412.00 109.50 12.00 4372.68
1969 31.52 a 17.00 130.00 240.50 554.90 a 532.50 d 856.50 891.50 746.00 361.00 141.50 58.50 4561.42
1970 101.50 81.50 190.00 210.52 a 577.12 a 645.00 850.50 768.50 685.50 390.50 170.00 33.50 4704.13
1971 21.50 38.00 145.00 215.00 378.00 606.50 818.40 a 853.03 b 721.50 361.00 117.50 4.65 a 4280.08
1972 3.00 112.50 342.00 321.00 555.00 704.00 811.37 e 810.65 a 612.00 386.50 77.00 24.00 4759.02
1973 18.50 68.50 69.50 311.50 594.00 769.50 828.50 779.81 b 649.50 404.00 128.50 17.00 4638.81
1974 37.00 19.00 181.00 250.00 480.50 b 664.29 b 816.00 808.00 748.50 513.50 112.00 10.50 4640.29
1975 11.00 61.00 115.50 151.00 552.50 631.50 736.00 754.13 e 693.50 374.00 96.00 14.98 a 4191.12
1976 20.00 87.00 199.43 a 265.50 570.50 677.00 789.50 694.50 678.00 510.00 182.00 11.50 4684.93
1977 7.00 116.85 b 145.50 430.00 332.00 696.21 a 803.50 811.68 a 634.50 529.07 a 209.00 69.23 a 4784.54
1978 42.50 69.50 264.00 241.00 571.00 640.50 804.93 b 818.50 503.50 g 528.00 100.50 13.00 4093.43
1979 17.50 32.50 158.00 279.50 590.00 705.00 859.73 a 775.50 795.00 526.47 b 111.50 33.50 4884.20
1980 60.00 100.50 144.50 301.55 a 429.00 539.00 824.50 742.45 a 658.39 b 521.00 200.50 25.00 4546.39
1981 43.50 99.50 135.37 a 358.97 a 583.00 847.22 c 851.50 796.50 691.50 371.00 211.00 62.00 5051.05
1982 0.00 95.00 85.00 261.00 537.50 517.00 771.00 755.50 646.00 439.50 59.00 20.00 4186.50
1983 12.50 60.00 150.00 201.50 465.00 656.50 740.50 835.00 760.00 532.00 149.50 75.50 4638.00
1984 14.50 40.50 274.50 280.50 638.50 669.50 916.50 831.50 827.00 406.00 111.50 16.00 5026.50
1985 0.00 102.00 82.50 414.50 453.50 802.50 934.50 771.00 561.00 454.00 0.00 z 28.50 4604.00
1986 79.00 130.50 261.50 296.00 541.00 678.00 798.50 813.50 517.00 461.50 195.50 6.00 4778.00
1987 7.00 66.00 146.50 432.00 617.86 b 655.86 a 672.38 b 767.50 640.50 235.50 q 80.50 m 24.00 q 4005.60
1988 3.00 p 31.50 l 150.50 j 158.50 n 211.00 n 456.00 i 479.50 o 602.50 i 352.00 n 321.50 l 93.00 l 21.00 j 0.00
1989 0.00 l 40.50 j 209.50 400.00 528.66 c 666.50 546.00 k 772.00 322.50 n 277.00 j 149.00 11.00 m 2725.66
1990 12.50 m 16.00 i 246.00 310.00 i 328.50 k 465.00 j 884.50 607.00 i 738.10 a 538.50 105.50 i 0.00 i 2407.10
1991 6.50 j 90.50 k 71.50 168.50 i 394.45 b 334.00 k 761.00 474.00 j 496.00 j 591.00 101.00 m 2.00 n 1817.95
1992 3.50 n 124.00 226.00 222.50 o 728.00 697.50 831.83 a 628.50 i 722.07 a 577.00 90.50 m 13.00 k 3906.40
1993 13.00 41.00 276.50 310.50 285.00 m 349.00 o 816.00 809.00 451.00 j 517.50 133.00 20.00 2936.50
1994 2.50 30.50 221.50 325.38 d 446.00 646.50 797.00 834.50 683.50 454.50 70.00 1.50 4513.38
1995 90.50 90.50 133.00 259.50 414.50 624.50 782.00 857.00 662.00 549.00 343.50 113.50 4919.50
1996 50.50 149.00 235.00 412.50 578.50 750.00 939.50 883.50 630.50 449.50 190.00 92.50 5361.00
1997 77.00 112.50 311.00 429.50 712.50 677.00 851.00 465.00 l 782.50 490.50 226.00 11.50 4681.00
1998 48.50 40.50 192.00 277.00 311.50 561.50 840.50 903.50 754.50 436.00 165.50 19.63 a 4550.63
1999 49.00 53.50 96.62 a 298.00 442.00 642.50 771.50 769.00 716.00 559.00 206.00 25.50 4628.62
2000 67.50 109.50 235.00 402.50 543.00 775.00 728.50 806.50 704.00 434.00 73.50 25.50 4904.50
2001 2.00 50.00 303.50 263.50 797.00 790.50 799.50 833.50 708.50 550.00 227.50 23.00 5348.50
2002 21.00 94.00 158.50 340.50 509.50 704.00 850.50 793.50 741.50 473.00 175.50 34.00 4895.50
2003 52.50 73.00 268.50 199.50 527.50 703.50 959.00 814.00 773.50 603.00 107.00 46.50 5127.50
2004 15.00 48.50 352.00 431.00 555.00 692.50 843.50 838.00 732.50 458.50 99.00 31.00 5096.50
2005 6.50 101.00 227.50 307.00 535.50 625.00 947.00 902.50 625.50 504.50 242.50 90.00 5114.50
2006 38.00 104.50 55.50 252.00 581.77 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1031.77
Period of Record Statistics
MEAN 28.40 75.09 179.04 299.37 518.47 670.69 820.96 808.09 684.65 476.64 150.41 33.03 4740.49
S.D. 25.65 41.95 74.63 89.09 97.85 80.96 67.00 56.35 69.81 64.98 58.21 28.05 301.51
SKEW 1.11 0.67 0.33 -0.32 0.41 0.08 0.06 0.24 -0.49 -0.06 0.78 1.23 0.05
MAX 101.50 206.00 352.00 452.00 797.00 847.22 959.00 938.00 827.00 603.00 343.50 113.50 5361.00
MIN 0.00 17.00 40.30 39.50 311.50 500.00 672.38 680.45 515.69 361.00 59.00 0.00 4186.50
NO YRS 46 48 51 47 44 47 49 45 45 47 45 45 35