YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.88 | b | 55.37 | a | 48.88 | 39.75 | a | 18.22 | 14.92 | a | 38.84 | f | ||
1973 | 15.95 | 19.71 | 23.56 | 28.84 | b | ----- | z | 49.60 | a | 56.40 | 55.97 | 47.18 | 41.55 | 29.26 | a | 18.48 | 35.14 | a | ||||||||
1974 | 14.89 | 17.38 | 31.32 | 31.63 | 46.03 | a | 51.80 | 55.48 | a | 54.15 | 49.17 | 42.17 | a | 26.65 | 14.48 | 36.26 | ||||||||||
1975 | 18.23 | 19.43 | a | 27.35 | 33.08 | 43.00 | 51.93 | 58.53 | 55.31 | 48.34 | a | 40.31 | 25.78 | 21.53 | a | 36.90 | ||||||||||
1976 | 16.97 | 23.59 | a | 21.34 | f | 33.95 | 43.45 | 51.03 | 59.45 | b | 56.18 | a | 49.80 | 37.58 | a | 27.20 | 20.23 | a | 38.13 | a | ||||||
1977 | 13.83 | a | 22.31 | a | 23.52 | c | 37.35 | 44.13 | 56.20 | 60.12 | b | 58.38 | b | ----- | z | 40.70 | c | 30.67 | a | 23.84 | 37.37 | a | ||||
1978 | 21.48 | a | 20.15 | a | 28.98 | 37.19 | c | 43.40 | a | 53.58 | 58.73 | a | 56.37 | a | 50.93 | 42.89 | 28.21 | a | 12.72 | a | 37.89 | |||||
1979 | 9.98 | 19.12 | 26.26 | 32.92 | 42.65 | a | 50.83 | c | 57.87 | 56.29 | 51.97 | 42.31 | 19.37 | 20.13 | 35.81 | |||||||||||
1980 | 19.16 | 23.59 | 22.85 | 30.92 | 42.17 | a | 53.13 | 60.48 | c | 56.68 | a | 50.45 | 37.53 | 27.05 | a | 29.68 | c | 37.81 | ||||||||
1981 | 25.53 | 21.91 | 27.52 | 39.07 | a | 44.76 | 55.63 | 59.74 | b | 57.82 | 53.29 | a | 38.92 | ----- | z | 20.15 | 40.39 | a | ||||||||
1982 | 15.25 | a | 17.41 | 28.03 | b | 30.97 | a | 43.58 | 50.67 | a | 57.33 | a | 59.05 | b | 50.33 | 35.37 | 24.88 | a | 18.14 | b | 35.92 | |||||
1983 | 19.53 | b | 20.82 | 27.65 | a | 28.90 | 40.95 | b | 50.43 | b | 57.62 | c | 59.84 | 52.18 | b | 42.07 | a | 29.61 | c | 17.21 | b | 37.23 | ||||
1984 | 12.85 | a | 16.83 | c | 22.70 | c | 27.69 | c | 43.50 | a | 52.91 | b | 58.45 | c | 57.87 | a | 49.98 | f | 34.79 | b | 26.04 | c | 19.57 | b | 33.93 | a |
1985 | 14.59 | d | 10.69 | b | 25.33 | e | 35.21 | a | 44.37 | d | 51.80 | c | 58.67 | b | 55.38 | e | 46.69 | f | 39.17 | d | 25.23 | f | 17.71 | 35.29 | b | |
1986 | 21.02 | b | 23.07 | a | 31.82 | 36.05 | a | 43.22 | b | 54.98 | e | 56.11 | c | 55.42 | e | 47.37 | c | 35.85 | d | 26.04 | c | 17.55 | a | 37.38 | ||
1987 | 15.58 | e | 20.94 | d | 24.26 | 37.37 | 45.57 | b | 52.67 | a | 55.21 | e | 52.29 | g | 46.50 | g | 41.54 | g | 25.77 | b | 15.70 | a | 32.56 | c | ||
1988 | 11.34 | f | 17.30 | g | 22.25 | e | 33.91 | c | 42.21 | c | 54.82 | b | 56.55 | a | 55.13 | 44.47 | 41.02 | a | 23.36 | a | 13.07 | c | 38.68 | b | ||
1989 | 12.70 | i | 19.96 | d | 30.66 | 37.53 | a | 44.65 | a | 50.60 | a | 59.43 | a | 54.74 | b | 49.27 | 40.25 | a | 27.91 | b | 14.45 | 39.04 | a | |||
1990 | 19.05 | a | 17.30 | 30.14 | b | 38.50 | 42.79 | 54.00 | 57.87 | 55.50 | 53.78 | a | 38.91 | b | 27.57 | b | 11.17 | a | 37.22 | |||||||
1991 | 14.34 | 22.00 | 25.24 | 30.78 | 44.05 | a | 53.35 | 56.10 | b | 57.38 | b | 49.18 | b | 39.40 | 24.33 | d | 16.17 | a | 36.03 | |||||||
1992 | 16.25 | a | 23.26 | 30.32 | 39.09 | a | 47.77 | c | 51.09 | a | 54.85 | a | 56.10 | 49.15 | 42.62 | a | 19.88 | a | 13.48 | b | 36.99 | |||||
1993 | 21.28 | a | 19.57 | a | 28.25 | a | 30.74 | a | 44.25 | a | 49.43 | b | 53.84 | 54.55 | a | 48.00 | a | 38.12 | a | 21.98 | b | 15.80 | c | 35.48 | ||
1994 | 18.90 | a | 17.13 | a | 28.40 | a | 35.05 | a | 46.63 | d | 55.52 | a | 58.84 | b | 59.45 | 50.98 | b | 39.37 | d | 23.03 | a | 19.78 | a | 37.76 | ||
1995 | 19.26 | b | 26.78 | a | 29.52 | b | 31.48 | b | 40.03 | 49.80 | 54.93 | b | 58.42 | 52.80 | g | 37.91 | c | 29.98 | a | 19.73 | 36.17 | a | ||||
1996 | 14.95 | c | 20.52 | a | 25.05 | 33.23 | b | 45.34 | c | 52.26 | a | 58.59 | b | 57.62 | c | 47.93 | a | 36.89 | c | 27.57 | a | 16.62 | a | 36.38 | ||
1997 | 17.15 | a | 16.30 | a | 28.46 | c | 28.42 | 43.33 | b | 53.47 | a | 56.71 | b | 55.70 | c | 51.13 | c | 38.24 | b | 24.46 | c | 15.22 | d | 35.71 | ||
1998 | 17.50 | b | 19.15 | b | 23.98 | 33.02 | b | 45.55 | a | 47.96 | b | 59.60 | a | 56.69 | b | ----- | z | ----- | z | ----- | z | ----- | z | 37.93 | d | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.23 | 19.96 | 26.94 | 33.57 | 43.90 | 52.29 | 57.53 | 56.59 | 49.70 | 39.35 | 25.62 | 17.60 | 36.72 | |||||||||||||
S.D. | 3.34 | 3.22 | 2.91 | 3.45 | 1.72 | 2.13 | 1.82 | 1.56 | 2.19 | 2.28 | 3.33 | 3.90 | 0.82 | |||||||||||||
SKEW | 0.27 | -0.56 | -0.05 | 0.05 | 0.03 | 0.07 | -0.24 | 0.51 | -0.19 | -0.23 | -0.65 | 1.03 | -0.00 | |||||||||||||
MAX | 25.53 | 26.78 | 31.82 | 39.09 | 47.77 | 56.20 | 60.48 | 59.84 | 53.78 | 42.89 | 30.67 | 29.68 | 37.89 | |||||||||||||
MIN | 9.98 | 10.69 | 22.25 | 27.69 | 40.03 | 47.96 | 53.84 | 54.15 | 44.47 | 34.79 | 18.22 | 11.17 | 35.48 | |||||||||||||
YRS | 24 | 25 | 25 | 26 | 25 | 26 | 27 | 26 | 21 | 25 | 24 | 26 | 15 |