| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.60 | p | 64.00 | 45.65 | 40.32 | 34.73 | 46.17 | |||||
| 1970 | 33.06 | 38.20 | 38.63 | 39.34 | a | 54.71 | 65.00 | a | 73.69 | 74.04 | e | 53.36 | i | 43.05 | i | 39.08 | 26.10 | 48.19 | ||||||||
| 1971 | 31.69 | 34.16 | 35.84 | 44.88 | 53.40 | 60.37 | 70.73 | 76.24 | 56.28 | 45.42 | 37.90 | 27.47 | 47.87 | |||||||||||||
| 1972 | 28.74 | 34.45 | 43.73 | 42.70 | 56.56 | 64.78 | 71.94 | 72.92 | 56.97 | 49.82 | 36.42 | 25.75 | a | 48.73 | ||||||||||||
| 1973 | 27.84 | 34.98 | 37.50 | 44.43 | 58.27 | 64.23 | 73.85 | 72.94 | 60.85 | 49.73 | 37.77 | 35.32 | 49.81 | |||||||||||||
| 1974 | 27.48 | 34.18 | 38.05 | 43.40 | 52.68 | 68.68 | 71.29 | 70.53 | 66.10 | 51.76 | 40.08 | 31.71 | 49.66 | |||||||||||||
| 1975 | 30.84 | 31.71 | 35.92 | 37.10 | 51.53 | 59.73 | 74.19 | 66.26 | 65.10 | 48.94 | 36.40 | 34.52 | 47.69 | |||||||||||||
| 1976 | 31.08 | 34.67 | 33.74 | 43.10 | 57.24 | 59.70 | 72.48 | 63.35 | 62.55 | 51.94 | 43.87 | 33.35 | 48.92 | |||||||||||||
| 1977 | 25.24 | 37.64 | 35.90 | 50.45 | 47.03 | 68.90 | 71.60 | 73.68 | 60.77 | 52.53 | 40.02 | 36.27 | 50.00 | |||||||||||||
| 1978 | 33.60 | a | 35.00 | 46.02 | 44.23 | 50.21 | 62.10 | 71.69 | 69.40 | 58.98 | 55.34 | 36.07 | 26.68 | a | 49.11 | |||||||||||
| 1979 | 20.84 | 33.77 | 40.68 | 44.77 | 55.75 | a | 63.98 | 72.10 | 68.90 | 66.40 | 54.26 | 34.23 | 34.66 | 49.19 | ||||||||||||
| 1980 | 29.00 | 36.82 | a | 36.05 | 48.95 | 53.18 | 58.12 | a | 72.19 | 68.98 | 62.77 | 52.39 | 41.42 | 36.15 | a | 49.67 | ||||||||||
| 1981 | 30.21 | 36.18 | 41.11 | 49.88 | 53.83 | a | 63.82 | 72.41 | b | 76.47 | 65.10 | 48.52 | 40.75 | 36.27 | 51.21 | |||||||||||
| 1982 | 29.40 | 33.05 | 38.16 | 43.00 | 53.35 | 63.12 | 70.18 | 72.81 | 58.57 | 49.06 | 33.33 | 29.82 | 47.82 | |||||||||||||
| 1983 | 34.55 | 37.16 | 39.45 | 41.92 | 54.18 | 60.55 | 67.65 | 70.77 | 60.35 | 52.76 | 38.38 | 26.52 | 48.69 | |||||||||||||
| 1984 | 22.81 | 31.34 | 40.69 | 42.93 | 55.23 | 58.62 | 73.85 | 74.02 | 59.98 | a | 46.00 | 37.88 | 27.76 | 47.59 | ||||||||||||
| 1985 | 26.44 | 30.71 | 37.21 | 52.38 | 56.98 | 67.48 | 77.68 | 69.60 | 55.33 | 49.56 | 31.00 | 26.15 | 48.38 | |||||||||||||
| 1986 | 37.10 | 39.84 | 46.58 | 46.72 | 55.68 | 69.38 | 69.13 | a | 75.13 | 55.25 | 52.35 | 42.35 | 31.06 | 51.71 | ||||||||||||
| 1987 | 29.29 | 36.41 | 40.73 | 54.32 | 54.82 | l | 66.97 | 67.92 | 71.40 | 69.91 | n | 57.53 | 39.28 | 32.63 | e | 49.65 | ||||||||||
| 1988 | 30.52 | a | 39.45 | 43.03 | 50.63 | 56.56 | 67.24 | a | 76.63 | a | 73.14 | b | 64.05 | ----- | z | 38.30 | 28.94 | 51.68 | ||||||||
| 1989 | 29.27 | 26.23 | 43.66 | 52.92 | 54.32 | 67.12 | 76.06 | 68.39 | 62.83 | 51.23 | 41.54 | c | 34.15 | 50.64 | ||||||||||||
| 1990 | 35.16 | 33.32 | 43.53 | 54.70 | 52.77 | 65.68 | 75.19 | 72.27 | 68.53 | 51.98 | d | 41.37 | 23.98 | 51.54 | ||||||||||||
| 1991 | 31.92 | 43.02 | 38.68 | 44.80 | 50.19 | 59.28 | 74.71 | 74.74 | 65.97 | 54.60 | 39.23 | 32.97 | 50.84 | |||||||||||||
| 1992 | 34.87 | 41.07 | 46.19 | 52.68 | ----- | z | 67.20 | 71.03 | 74.03 | 64.45 | 55.31 | 35.33 | 29.35 | 51.96 | ||||||||||||
| 1993 | 24.73 | 26.62 | 42.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.22 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 29.82 | 35.00 | 40.14 | 46.53 | 53.98 | 64.00 | 72.53 | 71.74 | 61.87 | 51.21 | 38.43 | 30.93 | 49.43 | |||||||||||||
| S.D. | 3.99 | 4.02 | 3.64 | 4.92 | 2.71 | 3.59 | 2.58 | 3.22 | 3.83 | 3.22 | 3.03 | 3.94 | 1.31 | |||||||||||||
| SKEW | -0.34 | -0.29 | 0.21 | 0.13 | -0.71 | -0.18 | 0.02 | -0.76 | -0.26 | -0.14 | -0.55 | -0.14 | 0.27 | |||||||||||||
| MAX | 37.10 | 43.02 | 46.58 | 54.70 | 58.27 | 69.38 | 77.68 | 76.47 | 68.53 | 57.53 | 43.87 | 36.27 | 51.71 | |||||||||||||
| MIN | 20.84 | 26.23 | 33.74 | 37.10 | 47.03 | 58.12 | 67.65 | 63.35 | 55.25 | 45.42 | 31.00 | 23.98 | 47.59 | |||||||||||||
| NO YRS | 24 | 24 | 24 | 23 | 21 | 23 | 23 | 23 | 22 | 22 | 24 | 24 | 19 | |||||||||||||