SAN FRAN ACAD OF SCI, CALIFORNIA

Monthly Total Heating Degree Days

(047765)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 195707
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
1951 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 131.50 q 274.00 198.00 199.43 a 285.00 c 497.00 1453.43
1952 561.21 b 405.46 b 460.19 b 314.50 279.52 a 279.44 c 231.98 a 267.24 b 152.68 b 245.23 c 339.50 455.00 3991.96
1953 376.50 364.00 414.50 401.00 304.50 253.50 296.10 b 206.00 121.50 187.60 b 288.50 377.00 3590.71
1954 457.25 c 344.00 445.50 297.50 321.48 d 262.00 230.00 273.50 169.14 a 200.50 285.00 498.00 3783.87
1955 555.33 b 393.50 374.00 430.00 311.00 293.00 299.00 328.00 254.00 224.00 329.00 398.50 4189.33
1956 444.50 450.00 412.00 370.18 b 271.50 237.41 a 274.23 e 172.00 i 130.50 241.28 a 225.50 424.50 3481.61
1957 540.00 334.00 363.45 b 264.50 256.00 163.00 139.00 i 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1920.95
Period of Record Statistics
MEAN 489.13 381.83 411.61 346.28 290.67 248.06 266.26 269.75 170.97 216.34 292.08 441.67 3888.96
S.D. 74.64 43.31 38.08 64.27 25.49 45.99 33.60 43.29 49.09 23.99 40.39 50.50 258.74
SKEW -0.40 0.44 -0.04 0.06 -0.13 -1.11 -0.19 -0.21 0.74 0.12 -0.46 -0.01 0.01
MAX 561.21 450.00 460.19 430.00 321.48 293.00 299.00 328.00 254.00 245.23 339.50 498.00 4189.33
MIN 376.50 334.00 363.45 264.50 256.00 163.00 230.00 206.00 121.50 187.60 225.50 377.00 3590.71
NO YRS 6 6 6 6 6 6 5 5 6 6 6 6 4