| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.64 | b | 37.16 | f | 51.64 | k |
| 1966 | 40.93 | b | 41.38 | d | 56.07 | a | 64.00 | 75.87 | 78.80 | 87.94 | 87.00 | 78.57 | 67.73 | a | 54.47 | 41.87 | 64.55 | |||||||||
| 1967 | 43.87 | 50.75 | 52.27 | a | 49.50 | 68.26 | 74.43 | 89.42 | 88.52 | 78.43 | 72.00 | b | 58.52 | a | 38.07 | a | 63.67 | |||||||||
| 1968 | 45.42 | 49.07 | 55.23 | 57.53 | 70.35 | 80.80 | 90.10 | 78.87 | 77.20 | 66.42 | 50.00 | 40.03 | 63.42 | |||||||||||||
| 1969 | 45.42 | 41.14 | 46.00 | 62.43 | 75.55 | 72.79 | a | 87.48 | 91.03 | 81.63 | 58.73 | a | 53.43 | 42.81 | 63.20 | |||||||||||
| 1970 | 44.16 | 52.82 | 51.97 | 52.60 | 70.40 | a | 77.33 | 88.19 | 89.68 | 75.60 | 63.63 | a | 54.87 | 39.53 | a | 63.40 | ||||||||||
| 1971 | 44.26 | 46.11 | 52.23 | 58.23 | 63.45 | 79.13 | 88.77 | 88.74 | 77.00 | 60.13 | 48.00 | 35.45 | 61.79 | |||||||||||||
| 1972 | 40.55 | 49.21 | 60.90 | 60.90 | 72.71 | 80.07 | 90.19 | 85.90 | 74.33 | 61.10 | 46.63 | 37.19 | 63.31 | |||||||||||||
| 1973 | 37.55 | 43.07 | 45.13 | 55.77 | 73.29 | 80.80 | 88.65 | 85.13 | 77.00 | 66.42 | 49.47 | 43.84 | 62.18 | |||||||||||||
| 1974 | 39.70 | a | 46.07 | 55.45 | 59.00 | 72.61 | 86.33 | 87.26 | 85.90 | a | 82.77 | 65.26 | 52.59 | a | 41.55 | 64.54 | ||||||||||
| 1975 | 41.20 | a | 43.79 | 49.00 | 47.97 | 67.16 | 77.40 | 88.94 | 83.61 | 79.50 | 63.74 | 53.27 | 46.35 | 61.83 | ||||||||||||
| 1976 | 46.00 | 48.66 | 51.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.83 | i | |||
| 1977 | 41.05 | l | 51.77 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.50 | y | 75.60 | j | 70.79 | g | 56.78 | g | 50.50 | u | ----- | z |
| 1978 | 41.59 | n | 46.40 | h | 54.11 | d | 56.33 | f | ----- | z | 77.72 | a | 86.54 | e | 85.72 | b | 71.46 | b | 70.48 | h | 51.50 | l | 31.00 | y | 75.11 | g |
| 1979 | 37.22 | v | 45.50 | x | ----- | z | 60.75 | f | ----- | z | 80.39 | b | 87.97 | 80.00 | 82.37 | 69.58 | 50.54 | f | 49.68 | c | 75.00 | f | ||||
| 1980 | 43.40 | a | 48.66 | 47.68 | 62.97 | a | 59.93 | c | 76.57 | b | 85.04 | f | 80.06 | 67.67 | l | ----- | z | 45.40 | e | 50.74 | 57.27 | c | ||||
| 1981 | 47.56 | f | 48.84 | c | 48.58 | 62.61 | b | 63.53 | a | 78.83 | 87.45 | 87.83 | a | 80.54 | b | 59.75 | c | 58.52 | c | 49.23 | a | 65.97 | a | |||
| 1982 | 33.60 | a | 45.89 | a | 47.81 | 57.10 | a | 68.69 | b | 74.70 | c | 84.72 | b | 86.59 | b | 71.24 | e | 60.96 | e | 46.89 | c | 40.65 | e | 59.90 | ||
| 1983 | 42.14 | b | 44.70 | e | 48.31 | b | 51.37 | c | 66.00 | d | ----- | z | 84.37 | a | 81.00 | b | 77.70 | 65.43 | a | 46.89 | c | 41.87 | 59.07 | a | ||
| 1984 | 39.86 | b | 46.52 | 52.03 | 54.67 | 72.34 | b | 74.38 | d | 87.23 | a | 83.27 | a | 78.83 | a | 55.78 | d | 48.93 | b | 39.10 | 61.08 | |||||
| 1985 | 38.57 | a | 42.22 | a | 45.89 | c | 67.43 | b | 70.83 | a | 84.04 | b | 88.63 | d | 87.87 | p | 72.20 | 64.77 | 44.60 | 43.55 | k | 61.92 | b | |||
| 1986 | ----- | z | ----- | z | ----- | z | ----- | z | 74.13 | a | 86.54 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.13 | k |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 41.66 | 46.40 | 51.14 | 57.75 | 69.71 | 78.50 | 87.87 | 85.23 | 77.43 | 63.84 | 50.83 | 42.37 | 62.74 | |||||||||||||
| S.D. | 3.35 | 3.38 | 4.20 | 5.55 | 4.52 | 3.51 | 1.60 | 3.61 | 3.57 | 4.25 | 4.30 | 4.55 | 1.40 | |||||||||||||
| SKEW | -0.73 | 0.03 | 0.49 | -0.16 | -0.59 | 0.44 | -0.74 | -0.32 | -0.34 | 0.01 | 0.35 | 0.54 | -0.54 | |||||||||||||
| MAX | 46.00 | 52.82 | 60.90 | 67.43 | 75.87 | 86.33 | 90.19 | 91.03 | 82.77 | 72.00 | 58.52 | 50.74 | 64.55 | |||||||||||||
| MIN | 33.60 | 41.14 | 45.13 | 47.97 | 59.93 | 72.79 | 84.37 | 78.87 | 71.24 | 55.78 | 44.60 | 35.45 | 59.90 | |||||||||||||
| YRS | 16 | 17 | 18 | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 17 | 16 | 12 | |||||||||||||