YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.33 | 4.78 | d | 13.56 | j | |
1984 | 9.23 | a | 16.29 | a | 22.08 | f | 29.60 | 45.24 | n | 47.60 | 55.52 | 56.42 | 43.77 | 32.97 | 22.11 | b | 16.41 | b | 32.99 | b | ||||||
1985 | 11.79 | c | 10.61 | 23.55 | 33.13 | 43.32 | 47.93 | a | 56.50 | a | 53.94 | 42.77 | 32.77 | 16.87 | 12.45 | 32.14 | ||||||||||
1986 | 19.94 | 17.27 | b | 28.39 | 32.59 | c | ----- | z | 50.37 | 54.65 | 53.42 | 45.86 | a | 35.81 | 22.97 | a | 14.26 | 34.14 | a | |||||||
1987 | 18.03 | b | 23.88 | k | 22.80 | a | 33.43 | 46.42 | 52.83 | 57.47 | a | 53.71 | 44.80 | 32.13 | 25.40 | 14.65 | 36.52 | a | ||||||||
1988 | 9.00 | a | 17.36 | a | 21.03 | a | 31.00 | 40.96 | c | 54.93 | 55.77 | 56.94 | 46.47 | 36.16 | 22.53 | 15.23 | 33.95 | |||||||||
1989 | 16.14 | b | 10.14 | 26.00 | b | 33.57 | 42.30 | a | 48.40 | 56.60 | a | 53.90 | 44.13 | 31.87 | 21.10 | 9.71 | 32.82 | |||||||||
1990 | 15.03 | a | 14.29 | 23.29 | 30.45 | a | 37.47 | a | 52.60 | 54.52 | 53.48 | 49.69 | a | 33.14 | b | 23.07 | a | 7.90 | a | 32.91 | ||||||
1991 | 8.58 | 20.00 | 23.30 | a | 32.48 | a | 42.54 | c | 53.10 | 55.61 | 55.00 | 46.23 | 30.86 | b | 19.00 | b | 16.14 | b | 33.57 | |||||||
1992 | 12.19 | d | 22.92 | c | 28.30 | a | 33.79 | b | 42.60 | a | 48.93 | a | 54.23 | a | 53.19 | 45.85 | c | 35.39 | c | 20.17 | 10.00 | a | 33.96 | |||
1993 | 10.00 | a | 13.96 | 26.77 | e | 30.87 | 40.94 | 48.69 | a | 54.57 | a | 54.61 | 42.59 | a | 32.70 | a | 16.82 | b | 18.23 | a | 32.56 | |||||
1994 | 14.61 | 12.15 | a | 25.23 | 31.13 | 45.13 | 55.60 | 54.70 | a | 58.17 | a | 47.20 | 36.87 | a | 25.37 | 20.83 | a | 35.58 | ||||||||
1995 | 17.21 | c | 22.07 | a | 23.53 | a | 28.89 | b | 38.33 | a | 50.28 | a | ----- | z | 56.82 | i | 44.46 | f | 33.00 | l | 27.24 | i | 17.33 | a | 28.24 | e |
1996 | 10.00 | b | 14.32 | d | 19.00 | h | 31.17 | a | 42.52 | d | 51.68 | b | 57.50 | c | 56.70 | u | 46.05 | i | 33.59 | b | 20.10 | a | ----- | z | 32.61 | d |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.21 | 15.95 | 24.74 | 31.70 | 42.05 | 51.00 | 55.64 | 54.80 | 45.40 | 33.69 | 21.37 | 13.69 | 33.44 | |||||||||||||
S.D. | 3.84 | 4.18 | 2.38 | 1.58 | 2.61 | 2.67 | 1.16 | 1.66 | 2.08 | 1.91 | 2.74 | 4.53 | 1.09 | |||||||||||||
SKEW | 0.32 | 0.29 | 0.28 | -0.21 | -0.20 | 0.33 | 0.43 | 0.93 | 0.47 | 0.37 | -0.26 | -0.44 | 0.82 | |||||||||||||
MAX | 19.94 | 22.92 | 28.39 | 33.79 | 46.42 | 55.60 | 57.50 | 58.17 | 49.69 | 36.87 | 25.40 | 20.83 | 35.58 | |||||||||||||
MIN | 8.58 | 10.14 | 21.03 | 28.89 | 37.47 | 47.60 | 54.23 | 53.19 | 42.59 | 30.86 | 16.82 | 4.78 | 32.14 | |||||||||||||
YRS | 13 | 12 | 11 | 13 | 11 | 13 | 12 | 11 | 11 | 12 | 13 | 13 | 8 |