YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | 31.87 | 42.55 | 49.33 | 58.06 | 53.03 | 47.73 | 37.42 | 31.47 | 21.35 | 41.42 | c | |||||||||
1967 | 21.13 | 19.64 | 30.61 | 37.23 | 38.61 | 47.80 | 54.87 | 51.81 | 45.87 | 38.48 | 29.10 | 16.80 | a | 36.00 | ||||||||||||
1968 | 21.55 | 23.00 | 25.52 | 31.30 | 38.00 | 47.70 | 53.61 | 52.35 | 45.43 | 37.23 | 26.43 | 18.19 | 35.03 | |||||||||||||
1969 | 25.81 | 21.04 | 17.74 | 34.57 | 42.32 | 46.97 | 55.37 | a | 56.32 | 50.10 | 33.16 | 26.83 | 22.80 | a | 36.09 | |||||||||||
1970 | 18.65 | 24.43 | 19.53 | a | 28.83 | 42.13 | 47.34 | a | 53.83 | b | 55.19 | 43.58 | f | 33.00 | d | 25.00 | g | 20.03 | 34.30 | b | ||||||
1971 | 18.33 | a | 16.57 | 23.57 | a | 28.52 | e | 36.77 | 48.77 | 52.03 | 51.39 | 42.97 | 36.03 | 26.63 | 20.10 | 33.47 | ||||||||||
1972 | 18.03 | 22.48 | 29.23 | 31.87 | 39.40 | a | 49.87 | 52.81 | 51.97 | 48.27 | 37.00 | b | 19.89 | b | 19.63 | a | 35.04 | |||||||||
1973 | 18.24 | b | 19.96 | a | 23.50 | c | 24.38 | f | 37.89 | c | 46.48 | a | 53.87 | 54.23 | 43.67 | 39.61 | c | 30.19 | d | 17.75 | c | 35.04 | a | |||
1974 | 18.39 | 20.56 | c | 27.96 | d | 30.14 | b | 43.82 | c | 49.27 | 54.77 | 52.00 | a | 43.58 | f | 40.23 | 26.90 | 19.03 | b | 34.83 | a | |||||
1975 | 16.87 | a | 18.79 | 24.10 | 31.13 | 42.03 | 47.70 | 53.84 | 54.13 | 43.90 | 38.23 | 24.20 | 25.06 | 35.00 | ||||||||||||
1976 | 18.58 | 26.52 | 25.06 | 33.33 | 39.26 | 48.37 | 53.42 | 52.97 | 46.27 | 32.55 | 23.73 | 21.45 | 35.13 | |||||||||||||
1977 | 15.26 | 22.54 | 23.67 | a | 34.07 | 42.71 | 52.30 | 54.94 | 54.58 | 49.50 | 40.23 | 28.10 | 24.58 | 36.87 | ||||||||||||
1978 | 16.77 | a | 19.50 | 27.29 | 35.50 | 40.77 | 52.00 | 56.61 | 53.29 | 48.20 | 38.10 | 28.43 | 14.94 | 35.95 | ||||||||||||
1979 | 10.32 | 20.82 | 25.94 | 32.07 | a | 39.87 | 49.20 | 54.55 | 52.13 | 48.47 | ----- | z | ----- | z | ----- | z | 37.04 | c | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.30 | 21.22 | 24.90 | 32.34 | 40.44 | 48.79 | 54.47 | 53.24 | 46.70 | 37.02 | 26.83 | 20.13 | 35.40 | |||||||||||||
S.D. | 3.56 | 2.58 | 3.58 | 2.54 | 2.19 | 1.73 | 1.53 | 1.46 | 2.37 | 2.65 | 3.12 | 2.94 | 0.97 | |||||||||||||
SKEW | -0.12 | 0.33 | -0.41 | 0.28 | -0.11 | 0.82 | 0.79 | 0.65 | -0.21 | -0.57 | -0.70 | 0.11 | -0.49 | |||||||||||||
MAX | 25.81 | 26.52 | 30.61 | 37.23 | 43.82 | 52.30 | 58.06 | 56.32 | 50.10 | 40.23 | 31.47 | 25.06 | 36.87 | |||||||||||||
MIN | 10.32 | 16.57 | 17.74 | 28.52 | 36.77 | 46.48 | 52.03 | 51.39 | 42.97 | 32.55 | 19.89 | 14.94 | 33.47 | |||||||||||||
YRS | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 12 | 13 | 12 | 13 | 9 |