| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.43 | 35.87 | 41.65 | |||
| 1973 | 37.61 | 47.25 | 51.87 | 61.60 | 76.77 | 83.67 | 92.74 | 89.33 | a | 78.30 | 66.68 | 49.57 | 44.61 | 65.00 | ||||||||||||
| 1974 | 38.94 | 48.82 | 51.71 | 60.17 | 70.42 | 88.97 | 91.13 | a | 89.70 | a | 86.17 | 70.13 | 51.70 | 46.74 | 66.22 | |||||||||||
| 1975 | 39.84 | 44.43 | 49.87 | a | 51.75 | b | 69.97 | 78.33 | 94.61 | 85.90 | 83.20 | 64.19 | 49.23 | 46.84 | 63.18 | |||||||||||
| 1976 | 43.84 | 48.45 | 50.13 | 60.80 | 76.87 | 78.59 | a | 91.29 | 81.61 | 79.93 | 68.61 | 59.00 | 46.42 | 65.46 | ||||||||||||
| 1977 | 33.29 | 51.11 | 51.13 | 69.10 | 63.65 | 86.70 | 89.55 | 89.29 | 78.33 | 68.32 | 51.23 | 44.68 | 64.70 | |||||||||||||
| 1978 | 41.52 | 45.96 | 60.10 | 58.90 | 68.06 | 81.10 | 89.94 | 87.03 | 75.33 | 72.74 | 49.00 | 38.06 | 63.98 | |||||||||||||
| 1979 | 31.06 | 44.96 | 55.10 | 61.63 | 73.35 | 84.50 | 92.81 | 86.77 | 85.57 | 69.61 | 47.73 | 45.90 | 64.92 | |||||||||||||
| 1980 | 40.23 | a | 47.72 | 51.23 | 66.47 | 68.97 | 78.50 | 92.26 | 88.32 | 80.13 | 68.97 | 54.17 | 44.30 | a | 65.11 | |||||||||||
| 1981 | 37.77 | 49.18 | 56.00 | a | 65.13 | 68.17 | g | 83.50 | f | 91.61 | c | 94.38 | b | 83.93 | c | 63.83 | a | 53.28 | a | 46.63 | d | 64.17 | ||||
| 1982 | 37.52 | ----- | z | 51.65 | 59.33 | 71.71 | 80.70 | 87.84 | 92.42 | 76.40 | 64.48 | 43.57 | 39.87 | 64.13 | ||||||||||||
| 1983 | 44.77 | 49.25 | 53.29 | 57.20 | 71.26 | 78.93 | 87.42 | 90.32 | 81.93 | 68.87 | 50.77 | 34.77 | 64.07 | |||||||||||||
| 1984 | 28.94 | 39.79 | 53.97 | 58.07 | 72.16 | 76.20 | 93.48 | 92.06 | 78.87 | 60.13 | 48.43 | 36.41 | i | 63.83 | ||||||||||||
| 1985 | 37.74 | 43.39 | 51.26 | 71.13 | 74.87 | 88.17 | 99.35 | 90.19 | 72.43 | 65.10 | 40.70 | 28.65 | 63.58 | |||||||||||||
| 1986 | 39.81 | 51.25 | 60.29 | 63.17 | 73.26 | 89.37 | 89.42 | 97.81 | 71.80 | 70.29 | 55.63 | 39.97 | 66.84 | |||||||||||||
| 1987 | 39.45 | 48.04 | 54.58 | 72.87 | 75.13 | 85.10 | 87.00 | 91.03 | 86.43 | 75.16 | 51.70 | 41.32 | 67.32 | |||||||||||||
| 1988 | 38.48 | 54.31 | 58.48 | 67.50 | 74.42 | 86.10 | 96.39 | 92.81 | 82.57 | 78.45 | 48.73 | 37.48 | 67.98 | |||||||||||||
| 1989 | 37.84 | 37.57 | 55.65 | 68.30 | 71.71 | 85.40 | 96.45 | 86.77 | 81.70 | 65.52 | 53.20 | 43.52 | 65.30 | |||||||||||||
| 1990 | 45.13 | 46.75 | 59.61 | 70.73 | 69.84 | 83.47 | 94.10 | 89.55 | 87.07 | 69.65 | 55.17 | 35.26 | 67.19 | |||||||||||||
| 1991 | 43.10 | 53.79 | 52.39 | 59.77 | 65.35 | 76.73 | 93.23 | 92.94 | 83.60 | 69.77 | 49.57 | 43.19 | 65.29 | |||||||||||||
| 1992 | 44.06 | 54.17 | 63.03 | ----- | z | 82.90 | 84.60 | 88.77 | 92.58 | 81.53 | 71.52 | 44.60 | 37.48 | 67.75 | ||||||||||||
| 1993 | 32.94 | 35.82 | 52.71 | 61.07 | 76.52 | 76.47 | 81.84 | 85.35 | 82.10 | 67.77 | 47.73 | 44.03 | 62.03 | |||||||||||||
| 1994 | 48.45 | 45.75 | 62.87 | 66.07 | 75.68 | 86.27 | 95.71 | 94.74 | 85.20 | 67.74 | 43.43 | 37.94 | 67.49 | |||||||||||||
| 1995 | 43.97 | 56.96 | 54.35 | 61.10 | 68.61 | 77.63 | 89.90 | 92.00 | 84.00 | 68.87 | 60.77 | 41.94 | 66.68 | |||||||||||||
| 1996 | 43.58 | 47.76 | 60.10 | 65.50 | 69.81 | 84.60 | 96.23 | 93.65 | 80.57 | 67.32 | 54.27 | 45.55 | 67.41 | |||||||||||||
| 1997 | 44.16 | 49.07 | 62.35 | ----- | z | 78.48 | 80.60 | 89.16 | 91.77 | 82.93 | 67.55 | 55.57 | 42.45 | 67.65 | ||||||||||||
| 1998 | 49.71 | 46.96 | 57.10 | 60.60 | 66.35 | 76.80 | 95.00 | 95.42 | 84.87 | 66.71 | 53.77 | 41.10 | 66.20 | |||||||||||||
| 1999 | 48.39 | 48.21 | ----- | z | ----- | z | ----- | z | 82.27 | 92.87 | 90.65 | ----- | z | ----- | z | ----- | z | ----- | z | 72.48 | ||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 40.45 | 47.57 | 55.42 | 63.25 | 72.25 | 82.30 | 91.86 | 90.53 | 81.34 | 68.38 | 50.74 | 41.33 | 65.52 | |||||||||||||
| S.D. | 5.18 | 4.87 | 4.18 | 5.08 | 4.41 | 4.15 | 3.71 | 3.52 | 4.07 | 3.67 | 4.70 | 4.59 | 1.60 | |||||||||||||
| SKEW | -0.29 | -0.51 | 0.48 | 0.04 | 0.22 | 0.04 | -0.41 | -0.36 | -0.80 | 0.50 | -0.03 | -0.84 | -0.33 | |||||||||||||
| MAX | 49.71 | 56.96 | 63.03 | 72.87 | 82.90 | 89.37 | 99.35 | 97.81 | 87.07 | 78.45 | 60.77 | 46.84 | 67.98 | |||||||||||||
| MIN | 28.94 | 35.82 | 49.87 | 51.75 | 63.65 | 76.20 | 81.84 | 81.61 | 71.80 | 60.13 | 40.70 | 28.65 | 62.03 | |||||||||||||
| NO YRS | 27 | 26 | 26 | 24 | 25 | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 21 | |||||||||||||