YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.06 | 37.81 | 33.83 | 29.65 | 9.40 | 1.68 | 24.74 | f | ||||||
1973 | 0.94 | 2.25 | 6.23 | 11.68 | b | ----- | z | 29.13 | 37.32 | 35.90 | 28.63 | 23.23 | 16.59 | a | 3.74 | 17.79 | a | |||||||||
1974 | -0.74 | -0.32 | 15.84 | 14.50 | 26.39 | 30.00 | 33.74 | 32.77 | 28.53 | 26.10 | 11.90 | -1.97 | 18.06 | |||||||||||||
1975 | 3.00 | 4.29 | 12.71 | 18.27 | 27.68 | 35.00 | 39.84 | 35.29 | 29.00 | 21.03 | 10.17 | 6.27 | a | 20.21 | ||||||||||||
1976 | -0.35 | 4.50 | a | 2.16 | f | 17.40 | 24.68 | 31.00 | 39.87 | a | 37.73 | a | 31.10 | 18.39 | 9.83 | 0.60 | a | 19.52 | a | |||||||
1977 | -3.58 | 4.61 | 7.07 | b | 20.50 | 25.42 | 34.03 | 42.13 | a | 40.62 | b | ----- | z | 23.10 | b | 16.30 | 10.39 | 20.05 | a | |||||||
1978 | 10.00 | a | 5.33 | a | 13.52 | 21.70 | c | 26.00 | a | 33.83 | 37.87 | a | 36.03 | a | 31.83 | 22.84 | 13.34 | a | -2.35 | 20.83 | ||||||
1979 | -4.94 | 3.71 | 11.74 | 17.40 | 25.71 | 31.40 | 37.13 | 38.77 | 30.50 | 22.52 | 3.17 | 0.45 | 18.13 | |||||||||||||
1980 | 3.77 | 7.31 | 7.13 | 14.40 | 26.80 | a | 31.20 | 41.14 | c | 36.26 | 31.10 | 19.77 | 11.66 | a | 12.83 | a | 20.28 | |||||||||
1981 | 7.90 | 4.32 | 11.87 | 22.62 | a | 30.16 | 37.43 | 41.62 | b | 39.16 | 35.79 | a | 24.84 | ----- | z | 5.48 | 23.75 | a | ||||||||
1982 | 0.53 | a | -0.14 | 14.69 | b | 15.28 | a | 28.23 | 31.69 | a | 38.90 | a | 42.07 | b | 35.50 | 20.19 | 10.17 | 4.03 | a | 20.09 | ||||||
1983 | 4.20 | a | 5.32 | 15.07 | a | 14.63 | 25.50 | a | 34.68 | b | 39.82 | c | 43.10 | 33.86 | b | 25.50 | a | 16.41 | c | 6.79 | b | 22.07 | ||||
1984 | -4.63 | a | -2.42 | c | 8.21 | c | 12.00 | c | 26.33 | a | 35.69 | a | 40.68 | c | 41.67 | a | 31.92 | f | 21.48 | b | 10.89 | c | 5.43 | a | 17.76 | a |
1985 | -0.54 | c | -7.92 | b | 8.92 | e | 20.41 | a | 27.63 | d | 31.96 | c | 40.66 | b | 33.62 | e | 29.96 | f | 22.96 | d | 12.84 | e | 2.13 | 17.52 | a | |
1986 | 2.17 | b | 10.41 | a | 15.19 | 19.41 | a | 24.79 | b | 34.80 | e | 39.46 | c | 36.96 | e | 32.70 | c | 21.11 | d | 14.19 | c | 1.63 | a | 21.07 | ||
1987 | -0.31 | e | 5.29 | d | 8.00 | 19.70 | 29.07 | b | 33.28 | a | 34.35 | e | 33.67 | g | 25.61 | g | 21.00 | g | 9.82 | b | 0.63 | a | 15.54 | c | ||
1988 | -5.96 | f | 0.00 | g | 4.07 | d | 16.07 | c | 23.00 | b | 33.82 | b | 33.83 | a | 33.45 | 22.87 | 19.57 | a | 9.31 | a | -3.93 | c | 19.21 | b | ||
1989 | -4.73 | i | -0.30 | a | 13.81 | 20.24 | a | 27.37 | a | 31.14 | a | 40.23 | a | 35.83 | b | 30.33 | 21.03 | a | 9.83 | -2.06 | 20.68 | a | ||||
1990 | 1.20 | a | -1.50 | 15.28 | b | 23.70 | 26.26 | 32.33 | 39.61 | 36.48 | 34.28 | a | 20.97 | b | 11.68 | b | -5.53 | a | 19.56 | |||||||
1991 | -2.10 | 3.46 | 9.65 | 16.80 | 27.50 | a | 35.93 | 38.17 | a | 39.07 | b | 31.54 | b | 21.65 | 11.21 | b | -0.80 | a | 19.34 | |||||||
1992 | -1.17 | a | 7.93 | 16.84 | 24.17 | a | 31.00 | c | 33.86 | a | 36.37 | a | 36.97 | 31.23 | 25.47 | a | 7.28 | a | -3.79 | b | 20.51 | |||||
1993 | 7.23 | a | 5.41 | a | 14.20 | a | 16.48 | a | 28.57 | a | 32.07 | b | 33.19 | 36.03 | a | 29.31 | a | 22.73 | a | 5.21 | b | -0.71 | c | 19.14 | ||
1994 | 1.40 | a | 0.00 | a | 12.07 | a | 21.72 | a | 27.78 | d | 35.10 | a | 36.59 | b | 41.16 | 32.71 | b | 24.26 | d | 7.59 | a | 4.43 | a | 20.40 | ||
1995 | 4.34 | b | 10.46 | 14.62 | b | 16.75 | b | 25.58 | 29.33 | 36.34 | b | 39.65 | 34.78 | g | 19.00 | b | 15.66 | a | 4.42 | 19.65 | a | |||||
1996 | 0.71 | c | 3.00 | a | 8.90 | 17.54 | b | 27.55 | b | 32.52 | a | 38.69 | b | 36.82 | c | 29.90 | a | 19.93 | c | 13.14 | a | 2.84 | 19.29 | |||
1997 | 3.39 | 0.00 | a | 12.14 | c | 14.53 | 28.07 | a | 35.33 | 37.69 | b | 40.29 | c | 36.57 | b | 21.29 | 10.07 | a | 0.48 | d | 19.99 | |||||
1998 | 2.17 | b | 4.81 | b | 7.35 | 19.54 | b | 29.73 | a | 31.96 | b | 40.10 | a | 38.14 | b | ----- | z | ----- | z | ----- | z | ----- | z | 21.73 | d | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.44 | 3.19 | 11.40 | 17.98 | 27.07 | 33.02 | 38.20 | 37.76 | 31.48 | 22.34 | 11.11 | 2.04 | 19.93 | |||||||||||||
S.D. | 3.71 | 4.11 | 3.57 | 3.38 | 1.85 | 2.14 | 2.51 | 2.70 | 3.08 | 2.58 | 3.34 | 4.35 | 1.06 | |||||||||||||
SKEW | 0.40 | -0.52 | -0.32 | 0.02 | 0.09 | 0.02 | -0.48 | 0.13 | -0.69 | 0.88 | -0.25 | 0.50 | -0.07 | |||||||||||||
MAX | 10.00 | 10.46 | 16.84 | 24.17 | 31.00 | 37.43 | 42.13 | 43.10 | 36.57 | 29.65 | 16.59 | 12.83 | 22.07 | |||||||||||||
MIN | -4.94 | -7.92 | 4.07 | 11.68 | 23.00 | 29.13 | 33.19 | 32.77 | 22.87 | 18.39 | 3.17 | -5.53 | 18.06 | |||||||||||||
YRS | 24 | 25 | 25 | 26 | 25 | 26 | 27 | 26 | 21 | 25 | 25 | 26 | 15 |