ELECTRA POWER HOUSE, CALIFORNIA

Monthly Total Heating Degree Days

(042728)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 199707
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 24.50 90.50 349.00 636.50 1100.50
1949 799.50 531.00 409.50 127.50 76.50 3.00 0.00 0.00 1.00 137.50 205.50 615.50 2906.50
1950 680.50 395.00 392.50 168.50 98.00 17.50 0.00 0.00 16.00 72.00 236.50 456.50 2533.00
1951 574.00 427.50 387.50 179.50 86.00 7.00 0.00 0.00 1.00 114.50 302.50 614.50 2694.00
1952 611.00 445.50 496.00 175.50 61.50 26.00 0.00 0.00 12.00 44.00 388.00 552.50 2812.00
1953 461.50 430.50 409.50 229.50 172.00 47.00 0.00 0.00 0.50 123.50 296.00 517.50 2687.50
1954 555.00 392.50 466.00 139.00 29.00 30.50 0.00 0.00 10.50 112.50 342.00 602.50 2679.50
1955 676.50 493.00 390.50 378.50 98.00 10.50 0.00 0.00 11.00 87.00 377.00 465.50 2987.50
1956 496.00 563.50 376.50 231.50 81.50 11.50 0.00 0.00 3.50 135.00 327.50 580.00 2806.50
1957 674.50 353.00 341.00 210.50 105.00 1.00 0.00 3.00 2.50 121.50 396.00 556.00 2764.00
1958 560.50 312.00 466.00 254.50 24.50 4.00 0.00 0.00 3.50 36.50 305.00 389.50 2356.00
1959 482.50 451.00 268.00 97.50 99.50 3.10 a 0.00 0.00 25.00 76.50 323.50 569.50 2396.10
1960 595.00 476.00 305.00 248.50 118.00 0.00 0.00 0.00 3.00 135.00 395.00 633.43 a 2908.93
1961 607.50 415.50 422.50 230.50 161.00 8.50 1.50 0.00 16.00 168.00 442.00 625.37 e 3098.37
1962 680.50 508.00 494.50 156.00 136.00 9.50 0.00 0.00 0.50 119.50 318.50 529.50 2952.50
1963 710.00 293.00 470.00 398.50 115.50 25.50 8.00 1.00 0.00 75.00 393.50 649.00 3139.00
1964 635.00 503.00 445.00 260.00 148.50 30.00 0.00 0.00 26.00 62.50 466.00 513.50 3089.50
1965 572.00 445.50 372.00 264.00 114.00 32.50 0.00 0.00 23.00 42.50 326.50 679.00 2871.00
1966 613.50 503.50 346.50 113.00 32.00 21.50 0.00 1.50 10.00 80.50 290.00 607.50 2619.50
1967 587.50 475.50 445.50 503.50 127.50 38.50 0.00 0.00 0.00 55.50 262.00 675.00 3170.50
1968 641.50 318.50 333.50 225.50 110.50 4.00 0.00 7.50 16.00 109.00 362.50 629.00 2757.50
1969 602.00 511.00 424.00 258.00 56.00 6.50 0.00 0.00 1.00 187.00 337.50 530.00 2913.00
1970 480.50 356.50 374.50 349.00 58.50 9.00 0.00 0.00 13.00 143.00 305.00 614.50 2703.50
1971 602.00 484.50 421.00 296.50 159.50 29.50 0.00 0.00 43.50 228.00 425.00 690.50 3380.00
1972 705.50 422.00 250.50 263.00 84.00 10.50 0.00 3.00 21.00 148.50 474.50 712.50 3095.00
1973 638.00 396.50 489.00 209.50 53.00 15.00 0.00 0.50 9.00 140.50 431.00 565.50 2947.50
1974 571.50 489.50 387.00 290.00 106.50 0.00 4.00 0.00 0.00 79.50 370.00 615.50 2913.50
1975 636.00 461.50 469.00 433.50 115.00 10.00 3.50 0.00 0.00 185.00 459.50 585.90 a 3358.90
1976 595.00 432.00 450.00 306.50 32.50 24.50 0.00 11.00 3.00 69.00 292.00 582.50 2798.00
1977 649.50 393.00 495.00 135.00 213.50 5.00 0.00 0.00 8.00 69.00 355.00 472.00 2795.00
1978 459.00 411.50 244.00 305.00 74.50 0.00 1.00 2.00 23.00 50.63 a 419.50 712.00 2702.13
1979 631.50 495.50 377.00 260.69 a 67.50 4.00 0.00 0.00 1.00 100.50 366.00 501.50 2805.19
1980 504.50 372.00 428.00 222.50 130.50 38.50 1.00 0.00 5.50 110.00 314.00 503.75 a 2630.25
1981 491.98 d 406.50 424.00 215.00 75.00 5.50 0.00 0.00 7.50 178.50 317.50 517.00 2638.48
1982 696.00 421.50 467.50 318.50 72.00 42.50 0.00 0.00 35.00 122.50 500.00 606.00 3281.50
1983 608.50 382.50 390.00 352.00 133.50 9.50 4.50 0.00 7.00 40.00 425.00 490.00 2842.50
1984 571.50 486.00 327.50 301.00 58.50 8.50 0.00 0.50 3.00 210.00 446.50 679.50 3092.50
1985 711.00 476.00 309.00 k 160.00 104.50 20.00 0.00 0.50 37.50 154.50 445.50 632.00 2741.50
1986 430.00 356.00 254.50 218.50 99.00 2.00 0.00 0.00 104.50 0.00 z 342.50 596.50 2403.50
1987 650.50 436.50 389.50 115.50 61.50 1.00 8.50 0.00 2.50 33.50 0.00 z 579.50 2278.50
1988 545.50 395.50 344.00 185.50 135.00 39.00 0.00 0.00 9.50 62.00 380.50 644.00 2740.50
1989 696.00 549.50 358.00 161.00 112.00 4.00 0.00 1.50 27.00 160.50 375.50 644.50 3089.50
1990 630.00 568.50 377.50 160.50 96.50 0.00 z 0.00 3.00 0.00 z 67.50 410.00 750.50 3064.00
1991 632.00 335.00 513.50 331.00 158.00 23.00 0.00 z 0.50 0.50 103.50 332.00 616.50 3045.50
1992 680.00 376.50 327.00 163.00 12.50 16.00 0.50 0.00 z 2.00 77.00 388.00 0.00 z 2042.50
1993 624.00 481.00 310.00 a 292.24 a 92.00 43.00 0.00 1.07 b 16.50 62.00 426.50 471.50 i 2348.31
1994 601.00 536.67 a 344.50 247.50 84.50 m 21.00 0.00 z 0.00 z 19.00 g 187.50 324.50 m 463.50 k 1938.17
1995 267.00 o 240.00 l 270.00 l 151.50 q 85.50 o 0.00 z 0.00 p 0.00 z 0.00 z 14.50 u 0.00 z 0.00 z 0.00
1996 258.00 q 198.50 p 168.50 p 94.50 t 0.00 z 8.00 n 0.00 q 0.00 n 6.00 o 93.00 p 0.00 z 210.50 r 0.00
1997 0.00 z 0.00 z 168.50 l 129.50 m 13.00 q 0.00 o 0.00 o 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 605.59 438.39 392.76 242.22 96.79 15.97 0.72 0.81 13.02 108.00 365.40 589.53 2867.27
S.D. 78.21 68.11 69.68 88.26 42.62 13.71 1.94 2.06 17.88 49.73 65.23 76.42 238.76
SKEW -0.25 -0.10 -0.32 0.68 0.27 0.72 3.00 3.63 3.21 0.48 -0.12 -0.31 0.17
MAX 799.50 568.50 513.50 503.50 213.50 47.00 8.50 11.00 104.50 228.00 500.00 750.50 3380.00
MIN 430.00 293.00 244.00 97.50 12.50 0.00 0.00 0.00 0.00 33.50 205.50 389.50 2356.00
NO YRS 46 46 45 46 45 45 45 45 45 46 45 44 38