YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.70 | 47.13 | 42.65 | 41.57 | 32.63 | a | 27.27 | 26.68 | 37.09 | e | ||||||
1981 | 26.39 | 23.50 | 27.77 | 32.07 | 36.71 | 41.17 | 43.19 | 46.68 | 39.40 | 32.16 | 28.60 | ----- | z | 34.33 | a | |||||||||||
1982 | 16.26 | 16.11 | 26.19 | 27.07 | 34.58 | 44.10 | 46.26 | 46.52 | 38.30 | 31.19 | 21.90 | ----- | z | 31.68 | a | |||||||||||
1983 | 25.90 | 27.11 | 29.32 | 28.57 | 37.29 | 41.70 | 45.48 | 50.32 | 36.33 | 33.23 | 28.73 | 11.35 | 32.95 | |||||||||||||
1984 | 22.29 | 25.62 | 29.26 | 30.20 | 35.19 | 42.17 | 47.42 | 48.26 | 37.90 | 28.81 | 24.83 | 12.65 | 32.05 | |||||||||||||
1985 | 12.03 | 14.50 | 21.42 | 32.37 | 37.35 | ----- | z | 50.81 | 44.77 | 37.27 | 31.71 | 13.07 | 11.48 | 27.89 | a | |||||||||||
1986 | 22.39 | 22.64 | 31.94 | 29.70 | 38.93 | a | 45.77 | ----- | z | 50.39 | 37.83 | 32.94 | 23.93 | 18.90 | 32.31 | a | ||||||||||
1987 | 17.74 | 25.61 | 29.26 | 35.70 | 40.48 | 43.55 | a | 45.74 | 42.97 | 39.77 | 31.00 | 26.80 | 19.87 | 33.21 | ||||||||||||
1988 | 16.48 | 24.59 | 26.42 | 33.40 | 37.29 | 44.67 | 46.87 | 44.55 | 40.20 | 38.42 | 26.13 | 18.65 | 33.14 | |||||||||||||
1989 | 19.16 | 10.82 | 26.10 | 32.43 | 36.06 | 43.47 | 47.32 | 45.74 | 38.87 | 33.61 | 30.63 | 23.65 | 32.32 | |||||||||||||
1990 | 25.71 | 20.57 | 27.81 | 34.80 | 36.52 | 42.27 | 48.65 | 48.19 | 43.00 | 32.60 | a | 29.20 | 11.55 | 33.40 | ||||||||||||
1991 | 19.32 | 30.64 | 26.03 | 31.37 | 36.68 | 40.77 | 47.39 | 49.55 | 40.53 | 31.61 | 27.13 | 25.00 | 33.84 | |||||||||||||
1992 | 25.16 | 29.10 | 30.71 | 34.70 | 39.74 | 47.33 | 48.32 | 47.42 | 40.90 | 35.35 | 25.03 | 17.23 | 35.08 | |||||||||||||
1993 | 13.97 | a | 15.37 | a | 29.23 | 31.40 | 40.94 | ----- | z | 42.26 | 44.06 | 38.33 | 36.00 | 20.28 | a | 25.29 | 30.65 | a | ||||||||
1994 | 30.48 | 22.00 | 28.52 | 35.37 | 40.65 | 42.07 | 50.06 | 47.55 | 43.30 | 33.52 | 22.17 | a | 20.00 | 34.64 | ||||||||||||
1995 | 22.35 | 26.46 | 25.84 | 31.37 | 38.61 | 41.97 | 48.58 | 43.26 | 41.07 | 31.68 | 30.67 | 22.13 | 33.67 | |||||||||||||
1996 | 18.81 | 18.10 | ----- | z | 32.00 | 35.03 | 41.70 | 46.81 | 44.74 | ----- | z | ----- | z | ----- | z | ----- | z | 33.88 | e | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.90 | 22.05 | 27.72 | 32.03 | 37.63 | 42.96 | 47.02 | 46.33 | 39.66 | 32.90 | 25.40 | 18.89 | 33.43 | |||||||||||||
S.D. | 5.05 | 5.68 | 2.53 | 2.43 | 2.05 | 1.84 | 2.20 | 2.51 | 2.00 | 2.25 | 4.50 | 5.42 | 0.94 | |||||||||||||
SKEW | 0.05 | -0.41 | -0.71 | -0.26 | 0.26 | 1.04 | -0.50 | 0.16 | 0.26 | 0.77 | -1.26 | -0.18 | 0.32 | |||||||||||||
MAX | 30.48 | 30.64 | 31.94 | 35.70 | 40.94 | 47.33 | 50.81 | 50.39 | 43.30 | 38.42 | 30.67 | 26.68 | 35.08 | |||||||||||||
MIN | 12.03 | 10.82 | 21.42 | 27.07 | 34.58 | 40.77 | 42.26 | 42.65 | 36.33 | 28.81 | 13.07 | 11.35 | 32.05 | |||||||||||||
YRS | 16 | 16 | 15 | 16 | 16 | 15 | 16 | 17 | 16 | 16 | 16 | 14 | 10 |