YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.13 | 24.13 | k | |
1947 | 18.87 | 28.50 | d | 26.63 | a | 29.17 | 35.58 | e | 37.11 | c | 42.76 | f | 41.65 | e | 40.40 | 33.84 | 27.53 | 24.17 | b | 31.22 | a | |||||
1948 | 18.26 | d | 17.57 | a | 21.00 | 24.80 | 30.73 | a | ----- | z | 40.37 | d | 39.63 | a | 35.55 | a | 30.52 | 22.28 | a | 13.13 | a | 26.71 | a | |||
1949 | 6.68 | 19.96 | 23.60 | a | 26.74 | c | 30.92 | g | 33.79 | k | ----- | z | ----- | z | 36.46 | d | 24.87 | 28.07 | a | 16.19 | 22.82 | d | ||||
1950 | 2.74 | 17.41 | a | 17.84 | 23.10 | 27.57 | a | 33.10 | t | 42.00 | v | ----- | z | ----- | z | 32.69 | e | 26.60 | 28.45 | 22.05 | d | |||||
1951 | 15.27 | a | 22.07 | a | 28.70 | a | 29.47 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.00 | r | 25.70 | 18.23 | a | 23.24 | f | ||
1952 | 18.45 | 21.14 | a | 22.39 | 29.80 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.95 | h | |||
1953 | 27.79 | c | 24.11 | a | 18.90 | 26.50 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.60 | i | |
1954 | 19.10 | 32.41 | f | 27.89 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.33 | x | 32.03 | 30.80 | 20.42 | g | 27.31 | i | |||
1955 | 21.46 | g | 16.89 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.89 | k |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | 26.46 | b | 33.33 | a | 37.90 | i | 39.83 | a | 42.77 | 42.79 | a | 33.23 | 28.38 | d | 25.65 | 34.06 | d | |||
1964 | 22.00 | 21.45 | 22.42 | 24.50 | 28.76 | b | 33.47 | m | 41.93 | a | 40.43 | a | 35.97 | 34.45 | 23.93 | 20.65 | 28.77 | a | ||||||||
1965 | 24.80 | a | 23.68 | 23.87 | a | 28.20 | 29.52 | 34.12 | n | 43.77 | a | 43.77 | a | 35.52 | a | 34.93 | a | 28.59 | c | 20.70 | a | 30.67 | a | |||
1966 | 22.00 | a | 21.31 | b | 23.17 | a | 27.40 | 30.71 | 36.14 | b | 40.41 | b | 42.92 | f | 39.34 | a | 32.68 | 28.96 | d | 25.77 | 29.81 | a | ||||
1967 | 24.83 | a | 24.54 | 21.50 | a | 22.50 | 29.97 | a | 34.73 | o | 43.03 | b | 45.97 | 43.03 | 32.83 | a | 28.00 | a | 21.90 | 30.74 | a | |||||
1968 | 20.73 | a | 26.54 | a | 25.03 | 24.10 | 32.45 | 37.76 | m | 45.57 | c | 43.32 | 39.43 | 31.30 | a | 26.59 | a | 19.17 | b | 30.39 | a | |||||
1969 | 17.55 | 19.93 | 22.77 | 25.70 | 33.68 | 41.05 | i | 40.90 | a | 39.45 | b | 38.90 | 29.52 | 27.39 | b | 24.27 | a | 29.10 | a | |||||||
1970 | 23.39 | 23.71 | 23.10 | 23.67 | 30.71 | 40.30 | 44.47 | a | 41.78 | d | 34.29 | b | 30.40 | a | 25.83 | 19.28 | b | 30.08 | ||||||||
1971 | 20.84 | 20.64 | 21.00 | 24.80 | 31.86 | b | ----- | z | 45.43 | c | 43.97 | b | 34.66 | a | 28.90 | 25.37 | 19.06 | 28.78 | a | |||||||
1972 | 17.60 | a | 24.48 | 26.27 | a | 23.24 | a | 31.97 | b | 35.00 | 44.41 | b | 44.11 | c | 35.62 | a | 29.90 | b | 28.38 | a | 17.06 | 29.84 | ||||
1973 | 17.62 | b | 23.57 | 23.55 | 27.03 | 34.81 | d | 36.08 | f | 42.13 | a | 40.04 | c | 39.50 | 30.87 | a | 25.70 | 26.16 | 30.09 | a | ||||||
1974 | 16.65 | 21.86 | 23.77 | 27.37 | 29.07 | b | 33.73 | h | 41.03 | 44.33 | a | 39.90 | 30.27 | a | 27.61 | b | 23.55 | 29.58 | a | |||||||
1975 | 23.19 | 20.50 | 21.52 | 22.79 | a | 29.77 | 35.63 | c | 44.62 | e | 40.32 | 40.62 | a | 33.43 | a | 24.55 | a | 25.00 | 30.16 | |||||||
1976 | 23.47 | a | 21.10 | 20.16 | 25.57 | 30.43 | a | 33.38 | a | 43.03 | a | 43.03 | a | 40.32 | b | 31.88 | f | 30.57 | 24.81 | 30.53 | a | |||||
1977 | 20.35 | 26.00 | 22.06 | 26.20 | e | 29.25 | c | 40.33 | c | 41.11 | c | 46.52 | 36.62 | a | 31.58 | g | 23.19 | d | 23.97 | 30.51 | a | |||||
1978 | 25.03 | 24.54 | 26.81 | 26.63 | 31.35 | 39.11 | b | 42.61 | c | 42.48 | b | 36.83 | a | 32.48 | 18.46 | d | 13.19 | 29.96 | ||||||||
1979 | 10.13 | 22.07 | a | 26.61 | 27.77 | 31.57 | a | 37.36 | b | 43.00 | b | 41.85 | e | 42.73 | 35.43 | a | 24.77 | 25.03 | b | 30.69 | ||||||
1980 | 17.30 | a | 25.38 | 24.06 | 27.90 | 31.46 | e | 35.88 | d | 44.17 | a | 40.10 | a | 38.66 | a | 33.23 | a | 29.73 | h | 26.48 | 31.33 | a | ||||
1981 | 25.45 | 22.18 | 25.53 | a | 27.73 | 32.21 | c | 37.50 | d | 41.21 | g | 45.17 | b | 38.23 | d | 31.38 | b | 27.86 | b | 23.32 | 30.60 | a | ||||
1982 | 19.45 | 19.22 | a | 21.43 | c | 23.10 | 29.90 | 37.17 | 43.00 | a | 43.25 | c | 36.69 | d | 30.07 | c | 23.03 | a | 20.38 | b | 28.89 | |||||
1983 | 23.76 | b | 25.89 | 28.31 | b | 25.55 | a | 32.10 | 35.91 | g | 41.67 | d | 44.52 | d | 36.85 | d | 32.52 | b | 27.61 | g | 15.87 | 30.70 | b | |||
1984 | 21.74 | 23.28 | 27.73 | a | 27.39 | g | 30.83 | a | 35.34 | a | 43.37 | d | 44.27 | a | 35.76 | e | 28.93 | c | 23.61 | b | 18.96 | d | 30.35 | a | ||
1985 | 18.84 | 17.81 | a | 21.29 | 28.67 | 31.45 | 37.86 | b | 46.17 | b | 41.21 | c | 35.72 | a | ----- | z | ----- | z | ----- | z | 31.00 | c | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.46 | 22.24 | 23.48 | 26.07 | 31.19 | 37.01 | 42.87 | 42.66 | 38.09 | 31.63 | 26.22 | 21.59 | 29.94 | |||||||||||||
S.D. | 5.43 | 2.90 | 2.75 | 2.16 | 1.84 | 1.99 | 1.79 | 2.03 | 2.57 | 2.31 | 2.76 | 4.11 | 0.59 | |||||||||||||
SKEW | -1.35 | -0.02 | 0.14 | -0.06 | 0.46 | 0.18 | 0.06 | 0.03 | 0.44 | -0.79 | -0.72 | -0.47 | -0.74 | |||||||||||||
MAX | 27.79 | 28.50 | 28.70 | 29.80 | 35.58 | 40.33 | 46.17 | 46.52 | 43.03 | 35.43 | 30.80 | 28.45 | 30.69 | |||||||||||||
MIN | 2.74 | 16.89 | 17.84 | 22.50 | 27.57 | 33.38 | 39.83 | 39.45 | 34.29 | 24.87 | 18.46 | 13.13 | 28.89 | |||||||||||||
YRS | 30 | 30 | 29 | 28 | 26 | 14 | 23 | 24 | 26 | 25 | 26 | 28 | 6 |