| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 14.00 | h | 4.00 | ----- | z | |
| 1945 | -3.00 | b | -0.00 | -10.00 | -0.00 | 24.00 | 32.00 | j | 41.00 | 34.00 | 26.00 | 25.00 | 10.00 | 8.00 | -10.00 | l | ||||||||||
| 1946 | 4.00 | 4.00 | 5.00 | 8.00 | 26.00 | 30.00 | 39.00 | 34.00 | 26.00 | a | 16.00 | 8.00 | 3.00 | 3.00 | a | |||||||||||
| 1947 | 2.00 | 20.00 | b | 15.00 | 15.00 | 25.00 | a | 27.00 | 33.00 | 24.00 | 22.00 | a | 22.00 | ----- | z | 7.00 | ----- | z | ||||||||
| 1948 | 9.00 | -0.00 | -0.00 | 13.00 | 12.00 | b | 29.00 | 34.00 | 36.00 | e | 18.00 | e | 16.00 | e | ----- | 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 | 11.00 | e | 15.00 | 28.00 | 34.00 | 37.00 | 35.00 | 15.00 | 10.00 | 9.00 | ----- | z | ||||||||
| 1980 | 4.00 | 16.00 | 8.00 | 9.00 | 16.00 | 26.00 | 37.00 | 36.00 | 31.00 | 20.00 | 17.00 | 8.00 | 4.00 | |||||||||||||
| 1981 | 10.00 | 8.00 | 9.00 | 17.00 | 23.00 | 24.00 | 37.00 | 40.00 | 34.00 | 13.00 | 11.00 | 11.00 | 8.00 | |||||||||||||
| 1982 | 2.00 | g | 9.00 | j | 9.00 | g | 9.00 | h | 21.00 | g | 24.00 | g | 34.00 | e | 40.00 | g | 25.00 | e | 11.00 | g | 11.00 | h | 11.00 | h | ----- | z |
| 1983 | 9.00 | h | 13.00 | h | 12.00 | i | 8.00 | k | 11.00 | f | 29.00 | d | 31.00 | m | 37.00 | f | 34.00 | b | 27.00 | a | 8.00 | f | 9.00 | i | ----- | z |
| 1984 | 8.00 | g | 8.00 | h | 11.00 | h | 10.00 | h | 21.00 | h | 29.00 | g | 42.00 | g | 36.00 | e | 27.00 | f | 14.00 | g | 6.00 | j | 3.00 | c | ----- | z |
| 1985 | 8.00 | 4.00 | a | 8.00 | a | 21.00 | 24.00 | 28.00 | a | 38.00 | a | 38.00 | 25.00 | a | 18.00 | 7.00 | b | 3.00 | 3.00 | g | ||||||
| 1986 | 16.00 | a | 6.00 | a | 10.00 | 11.00 | b | 10.00 | 37.00 | 39.00 | 43.00 | b | 22.00 | 22.00 | 17.00 | 18.00 | 6.00 | f | ||||||||
| 1987 | 1.00 | a | 5.00 | 7.00 | 19.00 | 23.00 | a | 34.00 | 30.00 | 37.00 | 37.00 | 33.00 | 17.00 | 5.00 | b | 1.00 | d | |||||||||
| 1988 | 7.00 | 11.00 | 14.00 | 18.00 | a | 15.00 | 22.00 | a | 43.00 | 42.00 | 33.00 | 32.00 | 16.00 | 4.00 | 4.00 | b | ||||||||||
| 1989 | 5.00 | b | -5.00 | 7.00 | 18.00 | a | 22.00 | 36.00 | 39.00 | 35.00 | 31.00 | 17.00 | 16.00 | a | 20.00 | a | -5.00 | e | ||||||||
| 1990 | 10.00 | a | 2.00 | 9.00 | 23.00 | 22.00 | a | 22.00 | 43.00 | a | 35.00 | 37.00 | a | 26.00 | 14.00 | -6.00 | -6.00 | d | ||||||||
| 1991 | 15.00 | a | 25.00 | 7.00 | 14.00 | 21.00 | a | 33.00 | 41.00 | 38.00 | a | 35.00 | 16.00 | 11.00 | 11.00 | a | 7.00 | d | ||||||||
| 1992 | 17.00 | 17.00 | 19.00 | a | 27.00 | 29.00 | 28.00 | 33.00 | 35.00 | 38.00 | 30.00 | a | 17.00 | 7.00 | a | 7.00 | c | |||||||||
| 1993 | 4.00 | b | 11.00 | 15.00 | a | 19.00 | 24.00 | 27.00 | 39.00 | h | 37.00 | l | 35.00 | e | 29.00 | k | ----- | z | 12.00 | m | ----- | z | ||||
| 1994 | ----- | z | ----- | z | 9.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 7.27 | 8.27 | 8.25 | 15.19 | 20.69 | 28.75 | 37.19 | 36.25 | 30.22 | 21.75 | 13.15 | 7.19 | 3.50 | |||||||||||||
| S.D. | 5.73 | 8.34 | 6.64 | 6.55 | 5.41 | 4.45 | 3.87 | 4.20 | 6.10 | 6.41 | 3.76 | 6.15 | 4.50 | |||||||||||||
| SKEW | 0.20 | 0.45 | -1.09 | -0.44 | -0.61 | 0.32 | -0.11 | -1.21 | -0.49 | 0.42 | -0.29 | 0.27 | -1.16 | |||||||||||||
| MAX | 17.00 | 25.00 | 19.00 | 27.00 | 29.00 | 37.00 | 43.00 | 43.00 | 38.00 | 33.00 | 17.00 | 20.00 | 8.00 | |||||||||||||
| MIN | -3.00 | -5.00 | -10.00 | -0.00 | 10.00 | 22.00 | 30.00 | 24.00 | 18.00 | 13.00 | 7.00 | -6.00 | -6.00 | |||||||||||||
| YRS | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 18 | 16 | 13 | 16 | 8 | |||||||||||||