| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1981 | 44.92 | a | 46.33 | b | 47.75 | e | 51.48 | a | 55.42 | 59.09 | g | 66.18 | 69.37 | 64.25 | d | 51.39 | d | 46.88 | 44.45 | 53.49 | ||||||
| 1982 | 38.77 | 42.20 | 45.32 | 48.05 | 55.35 | 63.40 | 64.45 | 66.65 | 61.52 | 54.58 | 43.83 | 40.44 | 52.05 | |||||||||||||
| 1983 | 41.79 | 46.00 | 49.66 | 49.63 | 57.18 | 59.67 | 62.63 | 65.40 | 59.88 | 54.27 | 48.00 | 39.58 | 52.81 | |||||||||||||
| 1984 | 41.76 | 44.03 | 49.68 | ----- | z | 55.40 | 59.48 | 67.50 | 66.85 | 61.30 | 51.74 | 47.12 | r | 40.14 | x | 55.31 | ||||||||||
| 1985 | 38.90 | 40.16 | 43.35 | 53.13 | 55.40 | 63.08 | 71.48 | 65.94 | 58.45 | 51.85 | a | 39.15 | 34.77 | 51.31 | ||||||||||||
| 1986 | 43.65 | a | 45.12 | 51.29 | 49.72 | 55.98 | 65.90 | 65.77 | a | 71.23 | 59.12 | 55.15 | 47.52 | b | 40.87 | 54.28 | ||||||||||
| 1987 | 39.77 | 43.50 | a | 47.74 | 54.28 | 59.08 | 64.20 | 65.31 | 67.61 | 62.91 | a | 57.39 | 48.02 | 39.65 | 54.12 | |||||||||||
| 1988 | 40.77 | 44.43 | 46.84 | 52.08 | 54.73 | 60.60 | 68.35 | 67.50 | 62.53 | 58.56 | 46.62 | 40.31 | 53.61 | |||||||||||||
| 1989 | 40.90 | 35.80 | 46.97 | 55.82 | 55.74 | 63.95 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.86 | |||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 41.25 | 43.06 | 47.62 | 51.77 | 56.03 | 62.54 | 66.46 | 67.57 | 61.25 | 54.37 | 45.72 | 40.01 | 53.03 | |||||||||||||
| S.D. | 2.06 | 3.32 | 2.41 | 2.60 | 1.32 | 2.34 | 2.69 | 1.90 | 1.99 | 2.66 | 3.23 | 2.84 | 1.19 | |||||||||||||
| SKEW | 0.49 | -1.21 | -0.23 | 0.12 | 1.48 | -0.15 | 0.55 | 0.89 | 0.00 | 0.34 | -1.38 | -0.43 | -0.32 | |||||||||||||
| MAX | 44.92 | 46.33 | 51.29 | 55.82 | 59.08 | 65.90 | 71.48 | 71.23 | 64.25 | 58.56 | 48.02 | 44.45 | 54.28 | |||||||||||||
| MIN | 38.77 | 35.80 | 43.35 | 48.05 | 54.73 | 59.48 | 62.63 | 65.40 | 58.45 | 51.39 | 39.15 | 34.77 | 51.31 | |||||||||||||
| NO YRS | 9 | 9 | 9 | 8 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 6 | |||||||||||||