| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.20 | p | 78.00 | 55.97 | 49.43 | 41.84 | 56.31 | |||||
| 1970 | 39.13 | 47.25 | 47.45 | 49.24 | a | 66.71 | 77.17 | a | 86.81 | 88.35 | 70.53 | 57.71 | 46.07 | 32.19 | 59.05 | |||||||||||
| 1971 | 39.00 | 42.11 | 44.32 | 54.90 | 64.35 | 70.53 | 82.81 | 89.03 | 68.77 | 55.97 | 46.07 | 34.29 | 57.68 | |||||||||||||
| 1972 | 35.97 | 42.31 | 52.87 | 53.27 | 68.39 | 77.00 | 85.42 | 85.81 | 68.30 | 59.87 | 43.13 | 33.83 | a | 58.85 | ||||||||||||
| 1973 | 35.52 | 42.36 | 45.94 | 54.67 | 70.45 | 76.97 | 86.52 | 85.61 | 72.27 | 59.87 | 43.40 | 42.16 | 59.64 | |||||||||||||
| 1974 | 34.32 | 42.54 | 46.16 | 53.30 | 63.77 | 81.47 | 84.61 | 83.29 | 79.53 | 63.55 | 49.07 | 39.58 | 60.10 | |||||||||||||
| 1975 | 39.58 | 38.68 | 44.42 | 45.40 | 63.06 | 71.93 | 87.19 | 78.84 | 78.17 | 59.06 | 45.27 | 42.32 | 57.83 | |||||||||||||
| 1976 | 39.42 | 44.24 | 43.16 | 53.70 | 70.74 | 72.47 | 85.68 | 75.10 | 74.40 | 63.58 | 54.10 | 42.61 | 59.93 | |||||||||||||
| 1977 | 33.68 | 46.82 | 45.65 | 62.53 | 56.94 | 82.63 | 85.48 | 85.71 | 73.50 | 63.87 | 47.97 | 42.81 | 60.63 | |||||||||||||
| 1978 | 39.97 | a | 41.57 | 55.26 | 53.13 | 61.39 | 74.07 | 84.32 | 82.42 | 69.47 | 67.84 | 45.13 | 35.35 | 59.16 | ||||||||||||
| 1979 | 29.32 | 40.25 | 50.10 | 54.67 | 67.67 | a | 77.30 | 85.03 | 82.29 | 79.33 | 65.03 | 43.00 | 43.71 | 59.81 | ||||||||||||
| 1980 | 37.00 | 44.57 | a | 45.42 | 60.70 | 64.81 | 71.62 | a | 86.16 | 82.10 | 73.70 | 63.52 | 49.67 | 44.23 | a | 60.29 | ||||||||||
| 1981 | 35.42 | 44.57 | 50.48 | 60.47 | 64.07 | a | 76.83 | 86.90 | b | 90.00 | 77.23 | 58.16 | 49.37 | 42.77 | 61.36 | |||||||||||
| 1982 | 36.26 | 41.32 | 45.84 | 53.87 | 65.45 | 74.47 | 82.68 | 86.13 | 69.87 | 58.74 | 40.73 | 36.90 | 57.69 | |||||||||||||
| 1983 | 41.35 | 44.39 | 46.68 | 51.53 | 65.32 | 74.13 | 81.94 | 83.45 | 73.87 | 63.55 | 45.17 | 32.65 | 58.67 | |||||||||||||
| 1984 | 30.58 | 39.34 | 49.61 | 52.17 | 66.35 | 70.10 | 86.06 | 85.81 | 72.93 | 54.32 | 43.70 | 34.16 | 57.10 | |||||||||||||
| 1985 | 33.16 | 38.61 | 45.58 | 62.90 | 67.58 | 80.03 | 89.52 | 82.19 | 65.30 | 59.42 | 38.07 | 33.26 | 57.97 | |||||||||||||
| 1986 | 44.45 | 45.68 | 55.74 | 56.70 | 67.23 | 81.87 | 82.42 | 87.52 | 65.23 | 62.74 | 50.53 | 38.06 | 61.51 | |||||||||||||
| 1987 | 36.97 | 43.61 | 48.87 | 66.57 | 65.05 | k | 79.67 | 81.32 | 85.00 | 82.24 | m | 69.97 | 46.43 | 39.22 | d | 59.76 | ||||||||||
| 1988 | 38.60 | a | 49.72 | 54.03 | 61.83 | 69.23 | 80.97 | 90.71 | 86.58 | 75.93 | 73.10 | 44.53 | 35.48 | 63.39 | ||||||||||||
| 1989 | 36.52 | 34.25 | 52.06 | 63.47 | 65.97 | 79.83 | 89.94 | 81.13 | 75.70 | 60.84 | 49.77 | 41.97 | 60.95 | |||||||||||||
| 1990 | 41.81 | 41.32 | 53.94 | 65.27 | 63.55 | 78.47 | 88.84 | 84.52 | 81.40 | 63.48 | d | 50.17 | 32.61 | 62.11 | ||||||||||||
| 1991 | 40.23 | 51.82 | 46.71 | 54.43 | 60.81 | 72.37 | 89.13 | 88.42 | 78.80 | 66.10 | 46.53 | 39.97 | 61.28 | |||||||||||||
| 1992 | 42.61 | 48.97 | 56.65 | 63.87 | ----- | z | 80.33 | 84.35 | 87.29 | 77.30 | 65.61 | 42.20 | 35.77 | 62.27 | ||||||||||||
| 1993 | 32.39 | 34.07 | 50.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.89 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 37.22 | 42.93 | 49.05 | 56.89 | 65.42 | 76.62 | 85.82 | 84.63 | 73.89 | 62.16 | 46.23 | 38.24 | 59.76 | |||||||||||||
| S.D. | 3.80 | 4.33 | 4.04 | 5.63 | 3.30 | 3.90 | 2.63 | 3.47 | 4.60 | 4.55 | 3.64 | 4.12 | 1.66 | |||||||||||||
| SKEW | -0.21 | -0.10 | 0.44 | 0.07 | -0.59 | -0.15 | 0.14 | -0.84 | -0.32 | 0.42 | -0.07 | -0.06 | 0.24 | |||||||||||||
| MAX | 44.45 | 51.82 | 56.65 | 66.57 | 70.74 | 82.63 | 90.71 | 90.00 | 81.40 | 73.10 | 54.10 | 44.23 | 63.39 | |||||||||||||
| MIN | 29.32 | 34.07 | 43.16 | 45.40 | 56.94 | 70.10 | 81.32 | 75.10 | 65.23 | 54.32 | 38.07 | 32.19 | 57.10 | |||||||||||||
| NO YRS | 24 | 24 | 24 | 23 | 21 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 21 | |||||||||||||