| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.17 | 63.52 | b | 56.39 | b | 44.31 | b | 58.10 | ||
| 1960 | 33.87 | 38.64 | a | 48.94 | 54.93 | 58.68 | 78.14 | a | 88.23 | 80.77 | a | 79.89 | b | 62.13 | 45.31 | d | 42.87 | 59.37 | ||||||||
| 1961 | 47.55 | 42.29 | 43.27 | a | 54.30 | 60.77 | 80.59 | a | 85.72 | b | 85.37 | d | 69.84 | e | 60.39 | 47.75 | b | 38.58 | 59.70 | |||||||
| 1962 | 34.72 | b | 39.04 | 41.06 | 60.37 | 57.45 | 75.21 | b | 82.69 | b | 80.32 | 78.38 | d | 61.84 | 50.27 | d | 46.48 | d | 58.99 | |||||||
| 1963 | 42.03 | b | 50.29 | 44.23 | a | 45.57 | 63.50 | e | 66.87 | 77.24 | b | 80.59 | b | 76.47 | 65.39 | c | 47.93 | b | 44.19 | 58.69 | ||||||
| 1964 | 39.84 | 40.93 | 42.50 | a | 52.82 | b | 60.04 | e | 65.89 | c | 83.07 | a | 80.48 | b | 71.15 | c | 69.26 | 43.39 | b | 37.77 | 57.26 | |||||
| 1965 | 38.48 | 44.04 | 48.06 | 53.46 | d | 60.67 | a | 70.73 | 81.56 | d | 76.35 | 67.07 | c | 68.97 | 50.48 | a | 41.81 | e | 58.47 | |||||||
| 1966 | 39.06 | 38.82 | 47.00 | 59.23 | 72.19 | d | 71.57 | 81.81 | d | 84.17 | a | 74.30 | 63.28 | b | 48.57 | 40.07 | b | 60.01 | ||||||||
| 1967 | 41.07 | b | 45.00 | a | 45.93 | d | 42.28 | a | 63.74 | d | 69.03 | 86.00 | 88.39 | 82.06 | n | 63.45 | 50.73 | 33.15 | d | 57.16 | ||||||
| 1968 | 39.39 | ----- | z | 49.77 | 54.17 | 62.55 | 74.40 | 86.81 | 74.10 | 73.47 | 61.97 | 46.23 | 40.03 | 60.26 | ||||||||||||
| 1969 | 38.81 | 35.93 | 42.48 | 55.27 | 68.77 | 72.74 | k | 83.55 | 86.13 | 76.40 | 53.84 | 53.30 | 42.81 | 57.93 | ||||||||||||
| 1970 | 38.19 | 48.50 | 45.26 | 47.77 | 64.28 | b | 74.97 | 85.03 | 85.97 | 71.58 | d | 60.35 | 47.37 | 34.87 | 58.68 | |||||||||||
| 1971 | 40.81 | 44.68 | 42.23 | 50.50 | 58.94 | 68.13 | 81.71 | 87.23 | 68.77 | 54.45 | 47.41 | a | 33.87 | 56.56 | ||||||||||||
| 1972 | 36.55 | 42.55 | 51.48 | 51.03 | 66.97 | a | 76.90 | 85.26 | 83.61 | 69.30 | 59.71 | 41.90 | 35.58 | 58.40 | ||||||||||||
| 1973 | 36.84 | 41.36 | 42.29 | 54.00 | 68.65 | 74.33 | 85.65 | 82.52 | 72.33 | 60.26 | 43.83 | f | 42.55 | 60.07 | ||||||||||||
| 1974 | 35.96 | c | 40.61 | 45.06 | 50.07 | 63.55 | 80.03 | 82.48 | 83.12 | g | 80.87 | 64.52 | 50.73 | d | 40.06 | 57.63 | ||||||||||
| 1975 | 40.40 | f | 37.95 | g | 39.39 | 43.33 | 59.96 | e | 64.73 | s | 83.70 | a | 78.62 | j | 77.75 | b | 55.50 | a | ----- | z | 42.12 | o | 59.94 | |||
| 1976 | 42.35 | 41.24 | 42.43 | a | 54.64 | p | 68.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.60 | ||||
| 1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.24 | j | 47.10 | 40.43 | h | 47.10 | ||
| 1980 | 41.00 | 46.14 | 45.71 | j | 51.87 | 64.26 | d | 67.30 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.11 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 39.21 | 42.50 | 44.79 | 51.82 | 63.52 | 72.94 | 83.78 | 82.57 | 73.48 | 61.69 | 48.43 | 39.94 | 58.61 | |||||||||||||
| S.D. | 3.27 | 3.79 | 3.34 | 4.96 | 4.12 | 4.84 | 2.64 | 4.10 | 4.39 | 4.35 | 3.58 | 4.01 | 1.05 | |||||||||||||
| SKEW | 0.63 | 0.40 | 0.45 | -0.35 | 0.45 | 0.06 | -0.62 | -0.55 | 0.21 | -0.17 | 0.31 | -0.27 | -0.63 | |||||||||||||
| MAX | 47.55 | 50.29 | 51.48 | 60.37 | 72.19 | 80.59 | 88.23 | 88.39 | 80.87 | 69.26 | 56.39 | 46.48 | 60.01 | |||||||||||||
| MIN | 33.87 | 35.93 | 39.39 | 42.28 | 57.45 | 65.89 | 77.24 | 74.10 | 67.07 | 53.84 | 41.90 | 33.15 | 56.56 | |||||||||||||
| NO YRS | 17 | 16 | 17 | 17 | 18 | 15 | 16 | 14 | 16 | 17 | 16 | 16 | 10 | |||||||||||||