| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.87 | 34.90 | 42.38 | |||
| 1964 | 35.97 | 44.20 | d | 50.35 | 62.83 | 72.06 | 77.50 | 93.23 | 88.71 | 78.97 | 69.61 | 47.97 | 41.87 | 63.61 | ||||||||||||
| 1965 | 38.13 | 51.00 | 55.97 | 65.30 | 71.58 | 82.50 | 91.81 | 86.84 | 75.53 | 72.65 | 53.10 | 38.06 | 65.21 | |||||||||||||
| 1966 | 42.10 | 45.50 | 57.03 | 68.33 | 79.06 | 79.77 | 92.52 | 92.58 | 84.13 | 67.26 | 52.93 | 39.00 | 66.68 | |||||||||||||
| 1967 | 43.77 | 51.50 | 53.61 | 55.23 | 74.84 | 80.93 | 96.23 | 99.25 | g | 85.90 | 66.48 | 51.20 | 39.00 | 63.52 | ||||||||||||
| 1968 | 38.00 | 50.69 | 59.84 | 63.03 | a | 73.94 | 84.10 | 96.52 | 84.37 | a | 80.10 | 63.71 | 47.23 | 39.45 | 65.08 | |||||||||||
| 1969 | 37.13 | 39.00 | 53.45 | 66.40 | 78.97 | 81.80 | 93.52 | 93.29 | 82.30 | 61.45 | 53.00 | 41.16 | 65.12 | |||||||||||||
| 1970 | 42.03 | 52.00 | d | 53.10 | 58.20 | 74.45 | 84.60 | 94.10 | 95.10 | 75.79 | f | 62.42 | 50.20 | 37.13 | 63.94 | |||||||||||
| 1971 | 41.84 | 48.79 | 49.81 | 63.60 | 74.00 | 79.20 | 93.23 | 96.94 | 75.37 | 64.29 | 48.47 | 36.94 | 64.37 | |||||||||||||
| 1972 | 38.29 | 44.52 | 58.23 | 61.53 | 77.55 | 85.20 | 92.35 | 95.27 | e | 75.97 | 66.94 | 48.47 | 31.61 | 64.66 | ||||||||||||
| 1973 | 34.68 | 46.18 | 54.06 | 64.59 | c | 78.19 | 85.17 | 94.94 | 92.58 | e | 78.83 | 67.07 | b | 46.60 | 42.55 | 65.45 | ||||||||||
| 1974 | 38.45 | 46.57 | 54.00 | 61.97 | 72.45 | 90.57 | 91.86 | b | 91.64 | c | 86.03 | 67.23 | 51.47 | 39.03 | 65.94 | |||||||||||
| 1975 | 37.94 | 43.21 | 50.35 | 54.90 | 72.16 | 80.40 | 94.94 | 87.58 | 84.30 | 63.55 | 48.80 | 40.42 | 63.21 | |||||||||||||
| 1976 | 40.45 | 43.17 | 50.55 | 62.57 | 78.94 | 80.63 | 93.13 | 83.58 | 81.03 | 67.74 | 55.23 | 42.81 | 64.99 | |||||||||||||
| 1977 | 31.58 | 49.36 | 53.61 | 72.60 | 65.26 | 89.27 | 91.97 | 91.61 | 78.37 | 68.13 | 49.70 | 44.55 | 65.50 | |||||||||||||
| 1978 | 41.42 | 46.39 | 61.00 | 60.73 | 70.58 | 83.22 | c | 92.32 | 89.61 | 77.60 | 72.00 | 47.67 | 36.06 | 64.88 | ||||||||||||
| 1979 | 25.58 | 41.96 | 56.71 | 63.13 | 75.74 | 85.53 | 94.48 | 89.63 | a | 85.83 | 69.29 | 46.73 | 40.58 | 64.60 | ||||||||||||
| 1980 | 37.55 | 45.69 | 53.90 | 67.73 | 71.94 | 77.63 | 93.10 | 88.13 | 80.83 | 67.39 | 50.17 | 41.55 | 64.63 | |||||||||||||
| 1981 | 38.13 | 46.11 | 58.23 | 65.63 | 71.90 | 81.47 | 92.97 | 96.71 | 82.17 | 64.39 | 52.73 | 43.28 | f | 68.22 | ||||||||||||
| 1982 | 36.74 | 42.29 | 52.77 | 60.67 | 72.58 | 82.33 | 87.35 | 92.52 | 76.73 | 65.71 | 44.07 | 36.39 | 62.51 | |||||||||||||
| 1983 | 42.10 | 46.64 | 54.45 | 59.10 | 74.39 | 80.27 | 87.87 | 92.13 | 78.77 | 68.52 | 52.63 | 34.06 | 64.24 | |||||||||||||
| 1984 | 33.29 | ----- | z | ----- | z | 62.03 | 71.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.73 | ||||
| 1985 | 37.50 | q | 39.79 | 51.87 | 70.97 | 78.16 | 88.90 | 99.06 | 87.82 | i | 75.90 | a | 74.45 | 45.20 | 29.10 | 65.34 | ||||||||||
| 1986 | 36.84 | 49.11 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.97 | |||
| 1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.29 | 41.29 | ||
| 1988 | 36.97 | a | 50.48 | 60.65 | 69.77 | 77.40 | k | 84.77 | 99.19 | 95.65 | ----- | z | ----- | z | ----- | z | ----- | z | 71.07 | |||||||
| 1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 87.90 | 82.53 | m | 69.52 | 53.47 | 44.68 | 63.89 | |||||
| 1990 | 46.44 | o | ----- | z | 60.84 | 74.27 | 74.23 | 84.87 | 96.42 | 90.87 | 89.53 | k | 67.32 | 57.46 | f | 31.06 | 72.48 | |||||||||
| 1991 | 37.29 | 55.21 | 60.00 | z | 64.17 | l | 69.65 | 78.40 | ----- | z | ----- | z | ----- | z | 58.44 | m | 45.53 | 40.32 | 54.40 | |||||||
| 1992 | 40.06 | 51.34 | 63.61 | 69.47 | 84.06 | 86.87 | g | 96.65 | 93.94 | 83.50 | 72.16 | 43.83 | ----- | z | 69.86 | |||||||||||
| 1993 | ----- | z | ----- | z | ----- | z | 62.70 | 78.68 | 78.27 | 83.16 | 89.13 | 82.97 | 68.00 | 52.10 | 47.33 | y | 74.38 | |||||||||
| 1994 | ----- | z | ----- | z | ----- | z | 74.63 | 76.55 | 87.10 | 96.74 | 96.13 | 89.83 | 68.13 | 43.37 | 38.19 | 74.52 | ||||||||||
| 1995 | 40.55 | 55.54 | 56.55 | 61.70 | ----- | z | ----- | z | ----- | z | 90.70 | u | 84.73 | 67.42 | 55.80 | 40.48 | 57.85 | |||||||||
| 1996 | 40.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.39 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 38.05 | 47.16 | 55.38 | 64.42 | 74.58 | 82.86 | 93.45 | 91.30 | 81.07 | 67.51 | 49.55 | 38.60 | 64.75 | |||||||||||||
| S.D. | 3.78 | 4.34 | 3.79 | 5.12 | 3.85 | 3.63 | 3.48 | 3.71 | 3.97 | 3.09 | 3.46 | 3.93 | 1.00 | |||||||||||||
| SKEW | -1.34 | 0.08 | 0.43 | 0.29 | 0.12 | 0.40 | -0.93 | -0.30 | 0.25 | 0.19 | -0.10 | -0.72 | -0.48 | |||||||||||||
| MAX | 43.77 | 55.54 | 63.61 | 74.63 | 84.06 | 90.57 | 99.19 | 96.94 | 89.83 | 74.45 | 55.80 | 44.68 | 66.68 | |||||||||||||
| MIN | 25.58 | 39.00 | 49.81 | 54.90 | 65.26 | 77.50 | 83.16 | 83.58 | 75.37 | 61.45 | 43.37 | 29.10 | 62.51 | |||||||||||||
| NO YRS | 27 | 26 | 25 | 28 | 27 | 26 | 26 | 25 | 24 | 27 | 28 | 27 | 17 | |||||||||||||