| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.46 | b | 69.23 | 59.80 | 45.10 | 62.15 | ||||
| 1960 | 40.81 | 46.24 | 57.10 | 58.13 | 62.68 | 80.97 | 89.00 | 81.93 | d | 81.73 | 68.00 | 49.40 | 46.35 | 63.53 | ||||||||||||
| 1961 | 49.63 | a | 49.00 | 50.19 | 60.53 | 63.84 | 81.57 | 87.19 | 88.67 | d | 73.50 | 65.37 | a | 50.53 | 40.67 | a | 63.39 | |||||||||
| 1962 | 39.42 | 45.32 | 49.60 | a | 65.43 | 59.63 | a | 75.07 | a | 85.52 | b | 81.77 | 82.67 | 64.68 | 53.60 | 45.55 | 62.36 | |||||||||
| 1963 | 45.35 | 54.82 | 51.35 | 51.60 | 68.07 | a | 71.60 | 77.54 | c | 81.97 | a | 81.33 | 63.23 | 50.20 | 46.50 | a | 61.96 | |||||||||
| 1964 | 40.84 | 49.24 | 50.52 | b | 58.97 | 64.10 | 71.87 | 80.44 | d | 82.76 | b | 76.77 | 73.57 | a | 48.81 | c | 43.07 | a | 61.75 | |||||||
| 1965 | 42.32 | 51.89 | 57.48 | 57.96 | b | 67.21 | c | 75.00 | c | 86.17 | b | 81.07 | d | 77.04 | c | 74.22 | d | 53.15 | d | 43.11 | c | 63.89 | ||||
| 1966 | 41.35 | 46.14 | 54.23 | a | 66.11 | c | 74.33 | a | 74.65 | d | 81.10 | b | 86.13 | a | 79.27 | 69.30 | a | 52.37 | 43.97 | 64.08 | ||||||
| 1967 | 44.26 | 52.32 | 50.55 | b | 48.92 | d | 70.37 | a | 76.73 | 88.20 | a | 92.48 | b | 85.70 | c | 65.84 | 57.07 | 38.18 | c | 64.22 | ||||||
| 1968 | 43.37 | a | 54.96 | b | 56.73 | a | 59.14 | a | 68.03 | 77.90 | 89.71 | 79.07 | b | 80.61 | b | 66.19 | 48.93 | 39.03 | 63.64 | |||||||
| 1969 | 37.48 | 43.07 | 54.57 | a | 59.47 | 73.20 | a | 76.93 | b | ----- | z | 85.10 | a | 80.47 | 60.55 | 57.50 | 47.00 | 61.39 | ||||||||
| 1970 | 45.29 | 53.48 | a | 53.97 | a | 55.17 | a | 70.47 | a | 81.03 | a | 89.67 | a | 89.84 | 75.97 | a | 66.53 | a | 52.47 | 40.74 | 64.55 | |||||
| 1971 | 42.65 | 48.48 | a | 47.48 | 56.53 | 65.87 | 72.60 | 87.48 | 90.19 | 77.17 | 62.52 | 51.63 | 41.55 | 62.01 | ||||||||||||
| 1972 | 42.71 | 48.41 | 59.39 | 58.97 | 71.42 | 79.43 | 89.94 | 87.39 | 77.10 | 68.16 | 49.93 | 37.45 | 64.19 | |||||||||||||
| 1973 | 41.03 | 51.46 | 52.06 | 62.70 | 77.26 | 78.97 | 88.87 | 87.23 | 78.00 | 65.74 | 46.73 | 43.39 | 64.45 | |||||||||||||
| 1974 | 37.10 | 40.57 | g | 47.00 | h | 50.52 | e | ----- | z | ----- | z | 84.37 | d | 89.00 | e | 89.64 | e | 70.72 | m | 54.56 | c | 44.65 | 64.26 | |||
| 1975 | 42.17 | a | 46.82 | 49.23 | 53.97 | 73.52 | 76.80 | 86.61 | 82.29 | 86.40 | 62.94 | 49.00 | 43.81 | 62.80 | ||||||||||||
| 1976 | 46.06 | 49.93 | 54.65 | 58.50 | 73.77 | 76.50 | 89.29 | 80.61 | 82.52 | e | 72.94 | 58.03 | 48.84 | 65.97 | ||||||||||||
| 1977 | 40.52 | 55.61 | 53.48 | 69.63 | 61.73 | a | 83.47 | 88.58 | 91.35 | 78.03 | 69.35 | 50.67 | 45.77 | 65.68 | ||||||||||||
| 1978 | 47.71 | 51.57 | 60.77 | 57.83 | 70.00 | 81.53 | 87.52 | 85.68 | 72.47 | 76.71 | ----- | z | 41.61 | 66.67 | ||||||||||||
| 1979 | 43.61 | 46.82 | 59.45 | 61.57 | 76.39 | 83.00 | 90.71 | 82.39 | 84.27 | 66.77 | 47.47 | 46.48 | 65.74 | |||||||||||||
| 1980 | 46.52 | 52.28 | 52.74 | 64.70 | 70.29 | 73.00 | 90.81 | 83.94 | 83.17 | 74.71 | 55.70 | 48.74 | 66.38 | |||||||||||||
| 1981 | 49.94 | 51.96 | 57.23 | 67.00 | 69.61 | 79.93 | 90.39 | 93.87 | 83.80 | 63.68 | 53.90 | 45.29 | 67.22 | |||||||||||||
| 1982 | 40.61 | 50.25 | 52.39 | 59.80 | 72.94 | 76.97 | 81.61 | 88.29 | 73.97 | 67.10 | 51.23 | 42.68 | 63.15 | |||||||||||||
| 1983 | 46.81 | 49.46 | 52.61 | 57.00 | 73.19 | 76.40 | 81.71 | 87.03 | 76.93 | 69.26 | 48.13 | ----- | z | 65.32 | ||||||||||||
| 1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.93 | 91.45 | 91.74 | 85.73 | 63.90 | 50.73 | 44.90 | 72.06 | ||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 43.23 | 49.98 | 53.82 | 59.17 | 69.47 | 77.41 | 86.83 | 86.07 | 79.95 | 67.62 | 52.06 | 43.78 | 64.05 | |||||||||||||
| S.D. | 3.42 | 3.30 | 3.60 | 5.13 | 4.76 | 3.44 | 3.81 | 4.17 | 4.46 | 4.20 | 3.50 | 3.03 | 1.54 | |||||||||||||
| SKEW | 0.24 | -0.14 | 0.27 | 0.01 | -0.40 | 0.04 | -0.93 | 0.14 | 0.23 | 0.54 | 0.59 | -0.39 | 0.39 | |||||||||||||
| MAX | 49.94 | 55.61 | 60.77 | 69.63 | 77.26 | 83.47 | 91.45 | 93.87 | 89.64 | 76.71 | 59.80 | 48.84 | 67.22 | |||||||||||||
| MIN | 37.10 | 43.07 | 47.48 | 48.92 | 59.63 | 71.60 | 77.54 | 79.07 | 72.47 | 60.55 | 46.73 | 37.45 | 61.75 | |||||||||||||
| NO YRS | 24 | 23 | 23 | 24 | 23 | 24 | 24 | 25 | 26 | 25 | 25 | 25 | 20 | |||||||||||||