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 | 32.33 | a | 11.07 | a | 15.65 | 19.68 | i | |
1960 | 4.81 | 5.90 | -1.06 | 30.00 | 39.32 | 43.90 | 48.81 | 51.94 | 45.10 | 33.29 | 24.47 | 5.52 | 27.66 | |||||||||||||
1961 | 0.65 | 9.79 | 16.94 | 25.63 | 33.13 | 45.20 | 51.87 | 49.06 | 44.30 | 34.97 | 19.50 | 5.68 | 28.06 | |||||||||||||
1962 | -2.58 | -1.57 | 13.90 | 24.93 | 43.13 | 45.20 | 47.68 | 47.10 | 39.50 | 35.35 | 23.40 | 7.29 | 26.94 | |||||||||||||
1963 | -6.29 | -6.29 | 14.74 | 27.83 | 35.52 | 46.80 | 51.42 | 48.00 | 41.80 | 38.97 | 26.93 | 2.06 | 26.79 | |||||||||||||
1964 | 7.84 | 2.31 | 10.61 | 27.67 | 41.74 | 45.80 | 53.32 | 49.00 | 42.93 | 31.26 | 23.80 | 1.81 | 28.17 | |||||||||||||
1965 | -2.23 | -4.00 | 6.68 | 25.73 | 42.13 | 44.03 | 48.26 | 48.00 | g | 40.13 | 33.52 | 20.83 | 15.26 | 24.58 | a | |||||||||||
1966 | -6.58 | 6.18 | 17.61 | 24.87 | 32.87 | 47.30 | 52.68 | 50.63 | l | 39.70 | 31.45 | 21.37 | 8.94 | 25.13 | a | |||||||||||
1967 | 4.52 | -6.32 | 12.52 | 26.97 | 30.81 | 48.50 | 49.90 | 44.56 | o | 39.90 | 33.81 | 18.90 | 8.94 | 24.40 | a | |||||||||||
1968 | 1.68 | -1.00 | 18.58 | 29.33 | 36.13 | 49.23 | 52.13 | 48.76 | n | 46.57 | 37.97 | 23.43 | 9.06 | 27.56 | a | |||||||||||
1969 | 4.19 | 3.22 | a | 6.35 | 29.53 | 38.55 | 43.53 | 51.42 | 52.90 | u | 41.57 | 32.97 | 19.07 | 10.26 | 25.51 | a | ||||||||||
1970 | -4.48 | -2.18 | 7.23 | 28.97 | 40.13 | 48.70 | 53.77 | 45.37 | l | 43.97 | 33.68 | 22.47 | 6.94 | 25.38 | a | |||||||||||
1971 | -4.87 | 2.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.17 | b | 46.20 | 43.13 | 23.87 | 9.48 | 23.79 | e | ||||||
1972 | -7.94 | -2.83 | 8.81 | 21.93 | 40.35 | ----- | z | ----- | z | 52.16 | 41.13 | 31.48 | 23.97 | 5.61 | 21.47 | b | ||||||||||
1973 | 6.58 | 4.81 | a | 25.58 | 28.90 | 37.06 | 50.77 | 53.00 | 55.06 | 44.53 | 38.87 | 24.03 | 7.48 | 31.39 | ||||||||||||
1974 | 2.68 | -2.50 | 14.81 | 29.33 | 35.55 | 43.27 | 53.71 | 50.26 | 38.20 | 33.58 | 24.07 | 14.26 | 28.10 | |||||||||||||
1975 | 3.29 | 4.92 | b | 10.32 | 20.20 | 42.23 | 50.70 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.94 | f | |||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | 37.82 | n | 46.93 | 48.27 | a | 45.23 | a | 34.04 | b | 24.29 | 13.07 | a | -6.26 | d | 29.37 | e | ||
1977 | -11.26 | 2.79 | 20.30 | a | 28.47 | 42.84 | 44.37 | 52.68 | 44.58 | 44.93 | 30.26 | 20.93 | 5.83 | a | 27.23 | |||||||||||
1978 | -3.10 | -7.04 | a | 7.55 | 24.87 | 38.55 | 45.67 | 50.17 | b | 50.58 | 46.97 | a | 32.45 | b | 17.83 | 0.45 | 25.41 | |||||||||
1979 | -7.40 | a | -9.52 | a | 16.10 | 23.36 | b | 34.93 | b | 44.34 | a | 50.44 | d | 48.21 | b | 43.60 | 32.71 | 18.50 | b | 12.48 | 25.65 | |||||
1980 | 1.46 | c | 3.87 | n | 8.39 | 28.70 | 37.19 | 44.00 | a | 50.07 | d | 52.94 | 42.31 | a | 28.74 | 22.00 | 5.47 | a | 29.21 | a | ||||||
1981 | -5.73 | a | 7.96 | 17.74 | 29.27 | 33.29 | c | 49.27 | 49.97 | 50.84 | 40.39 | b | 28.65 | 21.96 | b | 8.61 | 27.68 | |||||||||
1982 | -12.39 | -0.67 | a | 13.00 | c | 20.90 | 43.31 | b | 37.83 | 52.13 | a | 46.63 | a | 43.17 | 33.45 | 20.97 | 14.83 | a | 26.10 | |||||||
1983 | 6.39 | 16.74 | a | 19.81 | 25.07 | a | 32.55 | 44.87 | 55.94 | 53.94 | 44.34 | a | 32.03 | 23.39 | b | -3.19 | 29.32 | |||||||||
1984 | -3.93 | a | 15.72 | 6.77 | a | 28.77 | 34.16 | 49.60 | 48.84 | 53.28 | b | 39.39 | b | 37.32 | 19.10 | a | 6.70 | a | 27.98 | |||||||
1985 | -1.11 | c | -0.92 | b | 18.48 | b | 29.19 | c | 40.26 | 43.20 | 47.54 | c | 48.03 | 43.24 | a | 31.69 | b | 17.11 | c | -1.82 | c | 26.24 | ||||
1986 | 0.37 | a | 1.59 | a | 12.57 | j | 26.61 | b | 41.48 | f | 43.60 | 54.07 | a | 46.10 | 45.07 | 31.90 | 16.47 | 10.30 | d | 27.61 | b | |||||
1987 | 7.45 | 10.61 | 16.45 | 28.30 | 40.43 | a | 50.07 | b | 53.54 | c | 51.32 | 43.03 | a | 28.87 | a | 23.97 | a | 14.10 | a | 30.68 | ||||||
1988 | -3.74 | -3.70 | b | 13.70 | a | 25.87 | 36.94 | 46.87 | 51.32 | 53.83 | b | 44.53 | 28.90 | a | 25.13 | 4.27 | e | 26.99 | ||||||||
1989 | 9.10 | -6.56 | a | 6.27 | a | 24.86 | b | 33.63 | a | 51.22 | u | 51.43 | x | 47.26 | 39.00 | 32.81 | 17.37 | -3.45 | 20.03 | b | ||||||
1990 | 11.90 | 5.93 | 16.53 | a | 30.17 | 34.58 | 49.00 | 50.80 | a | 49.55 | 45.65 | d | 31.35 | 23.07 | a | 8.53 | a | 29.76 | ||||||||
1991 | 0.70 | a | 9.11 | 17.35 | 30.21 | a | 43.15 | e | 51.46 | f | 48.55 | 49.70 | a | 38.03 | a | 31.35 | 16.67 | 6.69 | b | 26.50 | a | |||||
1992 | 7.06 | 10.17 | 12.32 | 27.90 | a | 37.47 | a | 42.97 | 47.42 | 45.58 | 43.32 | b | 32.40 | a | 20.00 | a | 11.97 | b | 28.21 | |||||||
1993 | 2.52 | 0.71 | 12.00 | 24.75 | b | 39.19 | 45.54 | f | 53.00 | 51.48 | 38.30 | 30.65 | 17.70 | 12.03 | a | 25.67 | a | |||||||||
1994 | -8.87 | -1.96 | 17.63 | a | 26.66 | a | 36.16 | 49.37 | 52.07 | a | 48.94 | 46.55 | a | 35.73 | a | 24.07 | 15.60 | a | 28.49 | |||||||
1995 | 6.81 | 4.39 | 17.13 | 22.90 | 37.29 | 50.73 | 52.97 | 43.92 | s | ----- | z | ----- | z | ----- | z | ----- | z | 27.46 | e | |||||||
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.38 | n | 49.83 | a | 49.77 | a | 42.54 | f | ----- | z | 17.76 | a | ----- | z | 39.12 | i |
1997 | -1.82 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -0.07 | 2.01 | 13.37 | 26.72 | 37.71 | 46.31 | 51.14 | 49.54 | 42.39 | 32.92 | 20.78 | 7.35 | 27.84 | |||||||||||||
S.D. | 6.19 | 6.46 | 5.46 | 2.72 | 3.57 | 3.03 | 2.20 | 2.84 | 3.03 | 3.48 | 3.51 | 5.64 | 1.57 | |||||||||||||
SKEW | -0.11 | 0.38 | -0.35 | -0.70 | -0.01 | -0.40 | -0.04 | 0.11 | -0.59 | 0.55 | -0.71 | -0.56 | 0.57 | |||||||||||||
MAX | 11.90 | 16.74 | 25.58 | 30.21 | 43.31 | 50.77 | 55.94 | 55.06 | 46.97 | 43.13 | 26.93 | 15.65 | 31.39 | |||||||||||||
MIN | -12.39 | -9.52 | -1.06 | 20.20 | 30.81 | 37.83 | 47.42 | 44.58 | 34.04 | 24.29 | 11.07 | -6.26 | 25.41 | |||||||||||||
YRS | 35 | 34 | 33 | 34 | 33 | 31 | 33 | 29 | 34 | 35 | 36 | 35 | 20 |