| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.03 | b | 40.37 | 30.59 | d | 41.33 | ||
| 1972 | 36.90 | b | 41.96 | b | 52.94 | 55.66 | a | 65.19 | 72.18 | b | 82.90 | 76.68 | 66.17 | a | 50.71 | 36.54 | f | 31.37 | a | 57.51 | ||||||
| 1973 | 30.42 | 35.36 | 37.84 | f | 46.50 | 62.40 | a | 72.50 | 79.87 | 78.96 | c | 68.73 | 59.71 | 43.50 | 37.77 | 55.98 | ||||||||||
| 1974 | 31.97 | 36.25 | 48.39 | 50.47 | 68.65 | 80.57 | b | 77.73 | a | 78.65 | 71.90 | 57.68 | 42.59 | a | 32.77 | a | 56.47 | |||||||||
| 1975 | 36.27 | a | 35.00 | 39.68 | 42.50 | 56.55 | 69.07 | a | 77.81 | 76.10 | 69.87 | 57.03 | 43.03 | 39.62 | b | 53.54 | ||||||||||
| 1976 | 37.00 | a | 41.83 | 40.03 | 49.90 | 64.58 | 72.93 | 80.20 | a | 76.19 | 67.27 | 56.10 | 48.83 | 40.35 | 56.27 | |||||||||||
| 1977 | 35.27 | a | 43.68 | 39.26 | 56.57 | 56.55 | b | 76.23 | 78.94 | 77.77 | 70.40 | 60.74 | 47.10 | 42.10 | 57.05 | |||||||||||
| 1978 | 34.00 | 37.81 | a | 45.23 | 50.33 | 59.42 | 75.77 | 81.55 | 78.43 | a | 67.03 | 62.39 | 41.47 | 32.13 | 55.46 | |||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 34.55 | 38.84 | 44.25 | 50.27 | 61.91 | 74.18 | 79.86 | 77.54 | 68.77 | 57.17 | 43.84 | 35.84 | 55.76 | |||||||||||||
| S.D. | 2.55 | 3.58 | 5.61 | 4.89 | 4.60 | 3.70 | 1.91 | 1.21 | 2.07 | 3.90 | 3.04 | 4.60 | 1.36 | |||||||||||||
| SKEW | -0.59 | 0.21 | 0.54 | -0.18 | 0.07 | 0.45 | 0.36 | -0.22 | 0.20 | -0.36 | 0.64 | 0.13 | -0.92 | |||||||||||||
| MAX | 37.00 | 43.68 | 52.94 | 56.57 | 68.65 | 80.57 | 82.90 | 78.96 | 71.90 | 62.39 | 48.83 | 42.10 | 57.05 | |||||||||||||
| MIN | 30.42 | 35.00 | 39.26 | 42.50 | 56.55 | 69.07 | 77.73 | 76.10 | 66.17 | 50.71 | 40.37 | 30.59 | 53.54 | |||||||||||||
| NO YRS | 7 | 7 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 7 | 8 | 5 | |||||||||||||