| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1968 | 16.71 | 26.00 | 26.42 | 24.27 | h | 33.57 | a | 39.80 | 48.13 | a | 42.52 | h | 40.00 | a | 32.07 | c | 25.27 | 14.81 | 30.28 | |||||||
| 1969 | 13.13 | 17.56 | a | 17.68 | f | 25.20 | e | 32.55 | 42.26 | c | 43.48 | b | 42.54 | c | 39.41 | a | 29.55 | b | 27.14 | b | 22.76 | b | 30.51 | |||
| 1970 | 19.27 | i | 24.09 | e | 17.00 | i | 20.59 | h | ----- | z | 43.89 | l | 45.00 | k | 43.47 | l | 34.00 | f | 30.48 | b | 24.78 | c | 17.03 | a | 24.10 | |
| 1971 | 19.70 | d | 18.89 | 16.80 | f | 23.77 | h | 34.32 | c | 40.57 | 44.81 | 46.68 | 30.23 | 25.61 | 22.00 | 15.29 | 29.81 | |||||||||
| 1972 | 11.87 | a | 19.71 | a | 22.23 | 17.37 | c | 29.00 | a | 31.77 | h | 39.55 | 40.10 | 35.62 | a | 31.55 | 27.23 | ----- | z | 27.42 | ||||||
| 1973 | 9.95 | i | 21.20 | c | 25.39 | h | 25.93 | 35.58 | 40.47 | 46.03 | 45.94 | 40.43 | 32.39 | 24.07 | a | 24.19 | e | 33.62 | ||||||||
| 1974 | 9.10 | j | 20.24 | g | 22.83 | g | 26.63 | 30.58 | 38.93 | a | 43.77 | 44.42 | 48.17 | a | 34.65 | 27.33 | 20.74 | 35.03 | ||||||||
| 1975 | 18.00 | 16.43 | 19.23 | 22.03 | 30.55 | 38.10 | 49.39 | 41.70 | d | 39.19 | d | 30.79 | c | 23.31 | a | 25.23 | e | 29.50 | ||||||||
| 1976 | 17.71 | c | 12.00 | q | ----- | z | ----- | z | ----- | z | 43.50 | v | 47.00 | w | 40.36 | i | ----- | z | ----- | z | ----- | z | ----- | z | 17.71 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 16.19 | 20.55 | 22.62 | 23.43 | 32.31 | 40.02 | 45.02 | 43.56 | 39.01 | 30.89 | 25.14 | 20.01 | 29.50 | |||||||||||||
| S.D. | 3.04 | 3.46 | 3.61 | 3.82 | 2.36 | 1.44 | 3.26 | 2.55 | 5.41 | 2.62 | 1.99 | 4.30 | 0.00 | |||||||||||||
| SKEW | -0.44 | 0.45 | 0.20 | -0.86 | -0.02 | 0.21 | -0.29 | -0.06 | 0.07 | -0.77 | -0.21 | -0.08 | 0.00 | |||||||||||||
| MAX | 19.70 | 26.00 | 26.42 | 26.63 | 35.58 | 42.26 | 49.39 | 46.68 | 48.17 | 34.65 | 27.33 | 25.23 | 29.50 | |||||||||||||
| MIN | 11.87 | 16.43 | 19.23 | 17.37 | 29.00 | 38.10 | 39.55 | 40.10 | 30.23 | 25.61 | 22.00 | 14.81 | 29.50 | |||||||||||||
| NO YRS | 6 | 7 | 3 | 5 | 7 | 6 | 7 | 6 | 7 | 8 | 8 | 7 | 1 | |||||||||||||