| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 87.03 | 81.97 | 70.53 | 48.48 | 72.00 | |||||
| 1968 | 55.29 | 63.69 | 65.65 | 70.67 | 82.10 | 92.17 | 94.74 | 90.29 | 90.17 | 78.87 | 64.40 | 51.48 | 74.96 | |||||||||||||
| 1969 | 56.26 | 54.18 | 59.68 | 72.27 | 84.19 | 88.43 | 95.29 | 98.81 | 90.27 | 72.65 | 63.87 | 59.35 | 74.60 | |||||||||||||
| 1970 | 55.26 | 62.86 | 61.68 | 66.07 | a | 82.60 | a | 92.27 | 97.65 | 95.31 | b | 86.75 | b | 74.53 | a | 65.77 | d | 52.27 | a | 74.42 | ||||||
| 1971 | 55.35 | 59.96 | b | 65.71 | c | 70.34 | a | 75.14 | b | 89.73 | 98.19 | 91.10 | a | 88.13 | 71.06 | 60.96 | b | 49.58 | 72.94 | |||||||
| 1972 | 54.83 | a | 63.55 | 74.81 | 73.87 | 82.71 | 89.83 | 98.97 | 93.13 | a | 86.76 | a | 69.55 | 57.43 | 50.77 | 74.68 | ||||||||||
| 1973 | 48.52 | 55.43 | 54.19 | 68.30 | 83.32 | 93.80 | 97.23 | a | 95.89 | c | 88.57 | 78.35 | 61.48 | a | 57.13 | 73.52 | ||||||||||
| 1974 | 51.13 | 57.71 | 65.26 | 71.40 | 83.13 | a | 96.21 | b | 94.00 | 94.06 | 90.03 | 78.29 | 63.70 | 52.65 | 74.80 | |||||||||||
| 1975 | 54.19 | 55.50 | 58.55 | 62.33 | 78.55 | 90.23 | 95.52 | 95.19 | 90.30 | 76.68 | 64.03 | 56.94 | 73.17 | |||||||||||||
| 1976 | 57.58 | 60.48 | 60.42 | 66.60 | 83.10 | 90.20 | 94.35 | 93.42 | 82.70 | 73.23 | 67.10 | 58.16 | 73.95 | |||||||||||||
| 1977 | 52.29 | 63.96 | 59.32 | 74.63 | 72.48 | 92.50 | 96.16 | 94.23 | 88.79 | a | 80.90 | 67.13 | 60.74 | 75.26 | ||||||||||||
| 1978 | 52.55 | 56.54 | 64.39 | 66.33 | 79.32 | 93.57 | 97.45 | 95.32 | 87.00 | 82.23 | 59.60 | 49.45 | 73.65 | |||||||||||||
| 1979 | 45.55 | 55.33 | a | 60.32 | 71.03 | 79.58 | 92.07 | 97.19 | 91.81 | 95.10 | 81.68 | 62.60 | 60.42 | 74.39 | ||||||||||||
| 1980 | 54.94 | 60.66 | 58.97 | 70.60 | 74.87 | 91.63 | 98.35 | 95.48 | 90.73 | 80.35 | 68.67 | 64.48 | 75.81 | |||||||||||||
| 1981 | 62.26 | 61.82 | 62.32 | 75.80 | 80.65 | 96.90 | 98.10 | 97.10 | 88.78 | c | 72.29 | c | 68.60 | 60.84 | 77.12 | |||||||||||
| 1982 | 53.71 | 58.79 | 61.26 | 70.30 | 80.84 | 89.20 | 93.77 | 92.71 | 85.50 | 74.26 | 60.03 | 52.90 | 72.77 | |||||||||||||
| 1983 | 56.68 | 57.32 | 60.32 | 64.53 | 80.97 | 90.10 | 96.10 | 90.03 | 89.17 | 76.35 | 63.03 | 56.74 | 73.45 | |||||||||||||
| 1984 | 57.39 | 61.14 | 67.87 | 70.77 | 89.26 | 90.00 | 93.16 | 90.84 | 90.50 | 71.26 | 63.27 | 51.06 | 74.71 | |||||||||||||
| 1985 | 51.13 | 57.04 | 63.74 | 76.23 | 83.29 | 94.97 | 98.07 | a | 96.26 | 83.83 | 76.52 | 59.60 | 57.61 | 74.86 | ||||||||||||
| 1986 | 63.65 | 61.39 | 68.97 | 72.50 | 83.87 | 95.27 | 93.87 | 96.35 | 82.13 | 74.03 | 65.33 | 55.77 | 76.10 | |||||||||||||
| 1987 | 53.23 | 58.14 | 60.00 | 77.27 | 80.06 | 93.33 | 93.71 | 93.26 | 88.80 | 80.61 | 61.10 | 49.65 | 74.10 | |||||||||||||
| 1988 | 51.77 | 60.66 | 65.03 | 69.17 | 80.19 | 91.37 | 98.19 | 91.87 | 86.00 | 83.77 | 64.07 | 53.35 | 74.62 | |||||||||||||
| 1989 | 51.29 | 57.54 | 69.39 | 80.43 | 82.29 | 91.23 | 97.55 | 92.94 | 88.70 | 76.68 | 66.77 | 56.77 | 75.96 | |||||||||||||
| 1990 | 53.26 | 53.93 | 65.61 | 73.40 | 78.65 | 92.03 | 92.84 | 91.26 | 87.60 | 79.87 | 64.23 | ----- | z | 75.70 | ||||||||||||
| 1991 | 52.65 | 65.86 | 55.06 | 68.97 | 76.48 | 85.23 | 95.16 | 93.61 | 87.67 | 80.19 | 63.13 | 54.06 | 73.17 | |||||||||||||
| 1992 | 53.26 | 59.07 | 60.42 | 74.63 | 81.32 | 89.87 | 93.84 | 95.00 | 90.43 | 80.58 | 59.60 | 49.87 | 73.99 | |||||||||||||
| 1993 | 52.52 | 55.57 | 66.29 | 73.83 | 84.87 | 91.07 | 93.13 | 94.90 | 89.65 | j | ----- | z | ----- | z | ----- | z | 76.52 | |||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 54.10 | 59.16 | 62.89 | 71.24 | 80.92 | 91.66 | 95.87 | 93.85 | 88.13 | 77.18 | 63.69 | 54.82 | 74.46 | |||||||||||||
| S.D. | 3.72 | 3.30 | 4.59 | 4.14 | 3.54 | 2.55 | 1.98 | 2.23 | 2.74 | 4.00 | 3.23 | 4.38 | 1.08 | |||||||||||||
| SKEW | 0.49 | 0.20 | 0.42 | -0.04 | -0.35 | 0.00 | 0.00 | 0.13 | -0.13 | -0.25 | 0.16 | 0.35 | 0.48 | |||||||||||||
| MAX | 63.65 | 65.86 | 74.81 | 80.43 | 89.26 | 96.90 | 98.97 | 98.81 | 95.10 | 83.77 | 70.53 | 64.48 | 77.12 | |||||||||||||
| MIN | 45.55 | 53.93 | 54.19 | 62.33 | 72.48 | 85.23 | 92.84 | 90.03 | 82.13 | 69.55 | 57.43 | 48.48 | 72.77 | |||||||||||||
| NO YRS | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 24 | |||||||||||||