| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1972 | ----- | z | ----- | z | ----- | z | ----- | z | 54.65 | 60.50 | 67.35 | 68.84 | 55.43 | 47.40 | 40.77 | 26.13 | 52.63 | |||||||||
| 1973 | 28.45 | 35.71 | 40.50 | 45.40 | 54.16 | 59.73 | 67.26 | 63.85 | 58.67 | 47.95 | 36.45 | 36.50 | 47.89 | |||||||||||||
| 1974 | 24.38 | a | 38.02 | 40.73 | 45.50 | 50.02 | a | 62.52 | 64.77 | 67.08 | 60.90 | 49.35 | 41.20 | 36.39 | 48.40 | |||||||||||
| 1975 | 31.69 | 32.73 | 38.23 | 41.70 | 52.11 | 58.52 | 69.11 | 63.02 | 60.33 | 48.24 | 38.13 | 35.61 | 47.45 | |||||||||||||
| 1976 | 35.24 | 34.76 | 38.16 | 44.70 | 52.50 | 56.97 | 65.48 | 63.61 | 62.27 | 49.65 | 39.53 | 33.58 | 48.04 | |||||||||||||
| 1977 | 26.45 | 37.34 | 40.05 | 50.58 | 50.66 | 64.77 | 66.74 | 71.94 | 56.30 | 48.71 | 36.53 | 34.58 | 48.72 | |||||||||||||
| 1978 | 31.84 | 37.14 | 44.24 | 46.40 | 51.02 | 61.67 | 65.98 | 65.94 | 56.47 | 49.26 | 33.12 | 29.29 | 47.70 | |||||||||||||
| 1979 | 15.69 | 33.48 | 43.19 | 46.25 | 55.53 | 62.25 | 67.55 | 66.52 | 61.92 | 52.37 | 33.97 | 35.27 | 47.83 | |||||||||||||
| 1980 | 23.32 | 32.41 | 39.79 | 47.73 | 52.74 | 56.80 | 65.58 | 62.69 | 59.32 | 48.77 | 39.98 | 36.97 | 47.18 | |||||||||||||
| 1981 | 34.71 | 36.41 | 42.95 | 46.15 | 53.00 | 57.10 | 64.03 | 69.26 | 58.50 | f | 46.79 | 40.40 | 33.44 | 47.66 | ||||||||||||
| 1982 | 29.53 | 34.05 | 40.21 | 42.38 | 50.48 | 61.48 | 65.08 | 65.98 | 58.10 | 46.56 | 35.55 | 32.31 | 46.81 | |||||||||||||
| 1983 | 37.31 | 38.64 | 44.97 | 45.92 | 55.48 | 58.62 | 63.08 | 67.26 | 55.37 | 48.47 | 41.45 | 21.48 | 48.17 | |||||||||||||
| 1984 | 31.77 | 36.45 | 42.68 | 43.62 | 48.60 | 56.62 | 66.76 | 65.97 | 55.45 | 44.65 | 37.45 | 27.47 | 46.46 | |||||||||||||
| 1985 | 24.85 | 29.82 | 38.40 | 47.65 | 54.94 | 60.67 | 71.89 | 63.94 | 54.15 | 46.42 | 26.23 | 19.31 | 44.86 | |||||||||||||
| 1986 | 32.13 | 35.11 | 45.44 | 44.18 | 54.13 | 63.97 | 61.53 | 71.13 | 54.97 | 49.98 | 41.15 | 30.13 | 48.65 | |||||||||||||
| 1987 | 30.06 | 37.93 | 42.31 | 50.42 | 57.05 | 62.95 | 65.02 | 65.16 | 61.28 | 50.89 | 40.55 | 28.95 | 49.38 | |||||||||||||
| 1988 | 27.50 | 36.53 | 41.31 | 47.67 | 51.34 | 58.07 | 66.21 | 64.11 | 57.08 | 54.45 | 40.00 | 31.19 | 47.96 | |||||||||||||
| 1989 | 34.98 | 23.07 | 38.35 | 48.43 | 51.65 | 61.18 | 63.19 | 62.45 | 58.77 | 47.23 | 41.43 | 31.90 | 46.89 | |||||||||||||
| 1990 | 34.82 | 32.12 | 41.40 | 49.18 | 49.97 | 58.85 | 68.53 | 66.32 | 61.90 | 44.81 | 40.73 | 23.68 | 47.69 | |||||||||||||
| 1991 | 29.08 | 39.79 | 37.65 | 44.62 | 49.15 | 54.23 | 66.74 | 69.94 | 61.45 | 49.08 | 39.08 | 34.10 | 47.91 | |||||||||||||
| 1992 | 35.92 | 40.33 | 44.60 | 48.47 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.79 | 38.18 | 28.39 | 40.95 | ||||||||
| 1993 | 22.89 | 28.64 | 39.84 | 46.37 | 58.50 | 59.35 | 59.53 | 63.56 | 59.30 | 51.05 | 30.68 | 31.92 | 45.97 | |||||||||||||
| 1994 | 37.94 | 32.34 | 42.42 | 48.82 | 55.29 | 58.98 | 69.31 | 65.58 | 61.63 | 46.98 | 34.92 | 32.63 | 48.90 | |||||||||||||
| 1995 | 31.06 | 39.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.28 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 30.07 | 34.88 | 41.25 | 46.46 | 52.86 | 59.81 | 65.94 | 66.10 | 58.62 | 48.69 | 37.72 | 30.92 | 47.64 | |||||||||||||
| S.D. | 5.41 | 4.04 | 2.37 | 2.39 | 2.64 | 2.66 | 2.72 | 2.72 | 2.69 | 2.31 | 3.89 | 4.80 | 1.07 | |||||||||||||
| SKEW | -0.73 | -1.10 | 0.18 | -0.14 | 0.29 | -0.04 | -0.23 | 0.64 | -0.15 | 0.43 | -1.36 | -0.88 | -0.82 | |||||||||||||
| MAX | 37.94 | 40.33 | 45.44 | 50.58 | 58.50 | 64.77 | 71.89 | 71.94 | 62.27 | 54.45 | 41.45 | 36.97 | 49.38 | |||||||||||||
| MIN | 15.69 | 23.07 | 37.65 | 41.70 | 48.60 | 54.23 | 59.53 | 62.45 | 54.15 | 44.65 | 26.23 | 19.31 | 44.86 | |||||||||||||
| NO YRS | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 23 | 23 | 23 | 20 | |||||||||||||