YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.90 | a | 20.95 | a | 24.50 | 28.78 | i | |
1960 | 14.45 | 16.81 | 15.76 | 40.58 | 51.55 | 58.13 | 63.47 | 64.98 | 56.80 | 45.05 | 33.67 | 15.39 | 39.72 | |||||||||||||
1961 | 12.10 | 22.45 | 28.40 | 37.03 | 49.18 | 60.72 | 64.90 | 64.15 | 55.87 | 47.29 | 29.68 | 15.50 | 40.61 | |||||||||||||
1962 | 7.79 | 10.86 | 26.42 | 38.18 | 55.85 | 59.90 | 61.39 | 62.19 | 52.32 | 46.56 | 31.62 | 16.29 | 39.11 | |||||||||||||
1963 | 3.34 | 7.59 | 27.90 | 42.70 | 50.82 | 62.57 | 66.15 | 61.98 | 55.68 | 53.98 | 36.18 | 12.10 | 40.08 | |||||||||||||
1964 | 18.68 | 16.71 | 23.05 | 40.92 | 56.60 | 61.10 | 67.65 | 60.56 | 54.20 | 43.53 | 33.55 | 12.35 | 40.74 | |||||||||||||
1965 | 9.15 | 10.27 | 18.98 | 37.02 | 56.11 | 59.02 | 62.10 | 60.21 | g | 50.92 | 45.23 | 29.55 | 22.65 | 36.45 | a | |||||||||||
1966 | 6.52 | 16.82 | 28.47 | 36.47 | 46.20 | a | 62.58 | 67.76 | 64.33 | m | 54.03 | 44.11 | 28.85 | 17.71 | 37.23 | a | ||||||||||
1967 | 15.23 | 7.64 | 25.82 | 39.85 | 46.15 | 61.45 | 63.27 | 59.19 | o | 54.62 | 43.44 | 26.92 | 18.16 | 36.59 | a | |||||||||||
1968 | 12.35 | 12.38 | 32.76 | 42.87 | 49.40 | 61.07 | 64.39 | 63.59 | n | 57.23 | 48.10 | 31.22 | 17.42 | 39.02 | a | |||||||||||
1969 | 13.56 | 17.48 | a | 21.45 | 43.10 | 53.15 | 54.75 | 64.87 | 68.45 | u | 55.10 | 41.85 | 29.22 | 19.06 | 37.60 | a | ||||||||||
1970 | 7.42 | 12.34 | 21.77 | 41.80 | 53.15 | 63.20 | 67.55 | 61.42 | l | 56.58 | 46.68 | 30.35 | 17.06 | 37.99 | a | |||||||||||
1971 | 6.06 | 14.12 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.02 | b | 58.00 | 52.73 | 31.25 | 19.00 | 34.60 | e | ||||||
1972 | 6.31 | 10.41 | 21.74 | 35.37 | 56.81 | ----- | z | ----- | z | 64.34 | b | 53.90 | a | 42.82 | 32.24 | a | 14.71 | 33.87 | b | |||||||
1973 | 18.15 | 17.13 | a | 35.66 | 40.10 | 49.03 | 62.82 | 65.84 | 66.42 | 56.17 | 51.15 | 31.17 | 16.81 | 42.54 | ||||||||||||
1974 | 12.60 | 12.81 | a | 25.15 | a | 42.23 | 49.02 | a | 57.32 | 66.95 | 62.39 | 50.62 | 44.65 | 33.12 | 23.65 | 40.04 | ||||||||||
1975 | 14.32 | 16.60 | b | 22.69 | 34.15 | 57.08 | 62.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.51 | f | |||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | 53.53 | n | 63.53 | 65.10 | a | 62.65 | a | 51.93 | b | 38.37 | 23.48 | a | 7.29 | e | 44.62 | e | ||
1977 | 1.34 | 15.91 | 31.52 | b | 44.65 | 60.10 | 58.90 | 67.45 | 58.65 | 54.90 | 43.65 | 30.18 | 16.30 | d | 40.29 | |||||||||||
1978 | 8.76 | 8.78 | a | 23.11 | 37.30 | 54.63 | 60.28 | 62.95 | c | 64.30 | a | 58.36 | a | 43.22 | b | 28.45 | 11.47 | 38.47 | ||||||||
1979 | 3.18 | a | 6.02 | a | 26.60 | 35.62 | b | 48.59 | c | 59.17 | a | 65.24 | d | 60.93 | c | 56.73 | 41.69 | 27.56 | c | 22.27 | 37.80 | |||||
1980 | 11.94 | d | 14.73 | n | 22.03 | 42.52 | 54.82 | 58.72 | a | 65.26 | d | 64.73 | 54.28 | a | 39.55 | 30.92 | 14.53 | a | 41.75 | a | ||||||
1981 | 10.14 | b | 19.32 | 29.67 | a | 42.65 | 49.46 | c | 61.82 | 64.08 | 63.77 | 54.02 | b | 40.13 | 33.09 | b | 18.02 | 40.51 | ||||||||
1982 | 1.76 | 13.12 | b | 26.04 | e | 35.12 | 58.31 | b | 53.88 | 65.92 | a | 60.55 | a | 54.47 | 45.47 | 29.55 | 22.50 | b | 38.89 | |||||||
1983 | 16.31 | 25.06 | a | 28.31 | 36.88 | a | 46.92 | 60.48 | a | 69.66 | 68.13 | 57.45 | a | 43.74 | 31.25 | b | 6.85 | a | 40.92 | |||||||
1984 | 8.45 | a | 25.90 | 20.28 | a | 42.80 | 49.53 | a | 62.91 | a | 63.64 | b | 65.45 | b | 52.82 | b | 47.70 | a | 29.66 | a | 17.33 | a | 40.54 | |||
1985 | 9.68 | c | 13.06 | d | 30.76 | b | 44.40 | d | 55.19 | 57.55 | 62.64 | c | 61.13 | 54.67 | a | 44.38 | b | 25.11 | c | 8.46 | c | 38.92 | ||||
1986 | 13.18 | a | 13.96 | a | 25.07 | j | 43.36 | b | 57.15 | g | 59.42 | 67.15 | a | 60.15 | a | 55.70 | 43.37 | 26.15 | 19.37 | d | 40.18 | b | ||||
1987 | 17.63 | 23.45 | 30.90 | 46.78 | a | 56.09 | c | 64.66 | b | 67.09 | c | 63.37 | 56.31 | a | 39.17 | b | 32.67 | a | 21.78 | a | 43.33 | |||||
1988 | 8.27 | 11.24 | d | 25.53 | a | 41.27 | 55.61 | 63.88 | 67.06 | 66.47 | b | 56.23 | 39.05 | a | 31.05 | 15.29 | e | 40.08 | ||||||||
1989 | 19.33 | a | 7.54 | d | 19.34 | b | 38.43 | b | 50.81 | b | 64.83 | u | 68.86 | x | 61.68 | 54.35 | 45.92 | a | 25.60 | 6.95 | a | 33.00 | b | |||
1990 | 22.63 | 18.50 | c | 29.93 | a | 44.53 | 49.32 | 61.88 | 63.75 | a | 62.81 | 57.30 | e | 43.35 | 33.52 | a | 18.22 | a | 42.15 | |||||||
1991 | 10.79 | b | 21.27 | 29.37 | 45.02 | a | 55.75 | e | 65.12 | f | 62.03 | 64.03 | a | 50.95 | a | 42.90 | 25.67 | 17.28 | b | 38.64 | a | |||||
1992 | 16.02 | a | 18.97 | 24.87 | 37.75 | b | 53.85 | a | 57.33 | 59.34 | 59.27 | 53.81 | c | 43.72 | a | 26.78 | a | 19.41 | b | 39.26 | ||||||
1993 | 13.53 | 13.46 | 26.21 | 37.07 | c | 51.81 | 57.94 | f | 64.82 | 64.26 | 49.87 | 41.66 | 26.33 | 19.33 | a | 37.12 | a | |||||||||
1994 | 1.48 | 10.20 | 29.13 | a | 40.33 | a | 52.07 | a | 63.17 | 63.83 | b | 61.35 | 57.91 | a | 46.91 | b | 33.35 | 24.90 | a | 40.39 | ||||||
1995 | 15.07 | a | 15.09 | 29.08 | 35.31 | a | 51.15 | 66.00 | 66.23 | 57.64 | t | ----- | z | ----- | z | ----- | z | ----- | z | 39.70 | e | |||||
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.19 | n | 61.43 | a | 63.58 | a | 53.88 | f | ----- | z | 25.29 | b | ----- | z | 50.10 | i |
1997 | 9.76 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.07 | 14.80 | 26.02 | 40.12 | 52.55 | 60.66 | 64.88 | 62.94 | 54.83 | 44.34 | 29.59 | 16.85 | 40.22 | |||||||||||||
S.D. | 5.42 | 5.13 | 4.44 | 3.43 | 3.68 | 2.78 | 2.28 | 2.26 | 2.24 | 3.59 | 3.35 | 4.77 | 1.35 | |||||||||||||
SKEW | -0.06 | 0.37 | -0.17 | -0.03 | 0.04 | -0.49 | -0.24 | 0.19 | -0.50 | 0.75 | -0.46 | -0.50 | 0.52 | |||||||||||||
MAX | 22.63 | 25.90 | 35.66 | 46.78 | 60.10 | 66.00 | 69.66 | 68.13 | 58.36 | 53.98 | 36.18 | 24.90 | 43.33 | |||||||||||||
MIN | 1.34 | 6.02 | 15.76 | 34.15 | 46.15 | 53.88 | 59.34 | 58.65 | 49.87 | 38.37 | 20.95 | 6.85 | 37.80 | |||||||||||||
YRS | 35 | 34 | 33 | 34 | 33 | 31 | 33 | 29 | 34 | 35 | 36 | 35 | 20 |