YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.54 | f | 69.45 | ----- | z | ----- | z | ----- | z | 14.52 | 41.98 | j | ||
1962 | 2.98 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.75 | w | 66.18 | 55.88 | 47.66 | b | 33.98 | h | 16.87 | 46.65 | h | |||
1963 | 3.62 | a | 9.75 | 30.95 | 45.77 | 54.32 | a | 66.40 | 71.10 | g | 65.31 | 60.48 | 57.44 | 36.27 | 9.19 | 39.95 | a | |||||||||
1964 | 19.16 | 18.02 | 24.23 | 44.55 | 59.72 | a | ----- | z | 71.71 | 64.48 | a | 56.93 | 45.58 | 32.34 | a | 10.69 | b | 40.67 | a | |||||||
1965 | 6.23 | 10.71 | d | 18.68 | a | 38.60 | f | ----- | z | ----- | z | ----- | z | 60.42 | s | 51.35 | 47.98 | a | 31.71 | d | ----- | z | 27.78 | f | ||
1966 | -1.96 | d | 13.67 | a | 31.42 | a | 38.30 | 46.23 | i | 65.03 | j | 71.12 | a | 64.15 | 57.38 | 46.00 | a | 28.36 | a | 17.02 | h | 38.71 | c | |||
1967 | 12.92 | a | 6.85 | a | 28.24 | 41.57 | 49.18 | 62.88 | b | 66.65 | a | 62.90 | a | 57.57 | 45.73 | c | 28.23 | 18.66 | 40.11 | |||||||
1968 | 10.42 | 11.25 | a | 35.68 | a | 45.26 | c | 52.13 | a | ----- | z | 69.74 | l | 66.32 | 57.93 | 49.26 | 30.98 | 14.08 | 37.33 | b | ||||||
1969 | 8.21 | 15.73 | 21.73 | 43.93 | 56.26 | 57.18 | 67.39 | 69.74 | 58.50 | 43.10 | 31.26 | a | 18.55 | 40.96 | ||||||||||||
1970 | 3.89 | 11.54 | 22.13 | 41.62 | 53.15 | 67.09 | a | 72.24 | 68.13 | 57.81 | a | 47.47 | 29.42 | 15.16 | 40.80 | |||||||||||
1971 | 2.21 | 13.57 | 23.85 | 41.95 | 51.29 | 67.60 | 65.55 | 64.34 | 58.72 | 51.70 | a | 31.00 | 15.39 | 40.60 | ||||||||||||
1972 | 1.97 | 7.16 | 21.82 | 37.28 | 59.19 | 63.42 | 66.40 | 65.95 | 54.53 | 42.13 | 30.48 | 9.47 | 38.32 | |||||||||||||
1973 | 13.06 | 17.02 | 36.00 | 42.08 | 51.11 | 65.45 | 68.73 | 69.47 | 56.47 | 51.68 | 31.53 | 14.27 | 43.07 | |||||||||||||
1974 | 9.55 | 14.23 | 26.31 | 42.55 | 52.02 | 61.60 | 72.29 | 64.55 | 52.77 | 46.71 | 33.00 | a | 21.44 | 41.42 | ||||||||||||
1975 | 12.98 | 15.55 | 20.82 | 36.15 | 58.05 | 64.35 | 71.74 | 66.90 | 54.92 | 49.06 | 33.58 | 14.06 | 41.52 | |||||||||||||
1976 | 6.23 | 22.74 | 25.52 | 46.25 | 54.82 | 67.88 | 71.35 | 68.98 | 57.67 | 40.15 | 23.18 | 4.30 | d | 40.76 | ||||||||||||
1977 | -1.73 | 16.89 | 34.85 | 48.33 | 64.08 | 64.88 | 70.69 | 62.16 | 57.07 | 46.11 | 30.38 | 13.90 | 42.30 | |||||||||||||
1978 | 4.94 | 8.21 | 25.84 | 41.77 | 58.73 | 64.15 | 67.55 | 67.34 | 62.05 | 47.16 | 28.59 | a | 10.48 | 40.57 | ||||||||||||
1979 | -0.66 | 7.70 | 25.85 | 38.88 | 50.05 | 62.28 | 68.68 | 64.63 | 59.52 | 44.24 | 30.05 | 21.02 | 39.35 | |||||||||||||
1980 | 10.40 | 12.19 | 22.11 | 45.35 | 59.19 | 63.76 | a | 70.23 | 67.79 | c | 55.90 | a | 41.77 | 32.35 | 13.52 | a | 41.21 | |||||||||
1981 | 12.16 | 19.38 | 31.52 | 44.87 | 54.02 | 62.97 | 68.63 | 67.37 | 56.57 | 43.52 | 36.78 | 16.00 | 42.81 | |||||||||||||
1982 | -0.02 | a | 12.09 | 25.24 | 39.32 | 59.07 | a | 58.93 | 69.90 | a | 64.67 | a | 56.31 | a | 47.89 | 28.28 | 21.19 | d | 40.24 | |||||||
1983 | 14.63 | 24.16 | 29.90 | 38.22 | a | 51.58 | 63.72 | 72.11 | 70.63 | 59.12 | 45.94 | 32.48 | 2.77 | 42.11 | ||||||||||||
1984 | 9.34 | 26.00 | 22.40 | a | 44.48 | 52.52 | 65.65 | 67.60 | 69.44 | 54.20 | 49.85 | 31.13 | 16.22 | b | 42.40 | |||||||||||
1985 | 9.05 | 12.27 | 32.63 | ----- | z | ----- | z | 59.44 | d | 67.04 | d | 63.12 | c | 56.83 | a | 46.02 | 23.73 | 4.76 | 37.49 | b | ||||||
1986 | 13.40 | a | 12.66 | 30.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.83 | i | ||
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | 43.16 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.16 | k |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.80 | a | 67.46 | g | 52.81 | q | 45.63 | 35.14 | a | 14.76 | d | 40.33 | h | |
1991 | 9.69 | b | 20.46 | 31.80 | a | 46.22 | a | 60.62 | a | 67.00 | e | 67.73 | c | 69.50 | 55.62 | e | 44.83 | a | 24.26 | a | 16.10 | g | 45.25 | a | ||
1992 | 17.45 | 24.00 | a | 29.62 | a | 40.28 | 59.03 | 62.00 | 62.98 | a | 63.38 | b | 58.05 | a | 44.90 | b | 29.83 | a | 18.77 | 42.52 | ||||||
1993 | 12.55 | 16.02 | 27.79 | 41.38 | 54.95 | 61.68 | 67.95 | 68.35 | a | 52.71 | a | 42.46 | h | 27.95 | 18.70 | a | 40.91 | a | ||||||||
1994 | -0.15 | 10.09 | 31.78 | a | 43.03 | 57.58 | a | 66.42 | 67.85 | 65.24 | 61.02 | d | 51.91 | t | ----- | z | ----- | z | 44.76 | c | ||||||
1995 | 14.91 | d | 14.39 | 31.16 | 36.91 | a | 53.93 | c | 68.85 | g | 69.96 | d | 71.35 | 55.72 | c | 46.75 | a | 23.38 | b | 13.50 | d | 39.27 | a | |||
1996 | 4.54 | c | 15.10 | c | 21.40 | 37.82 | 52.95 | 65.57 | c | 65.66 | i | 67.40 | e | 58.61 | b | 47.93 | b | 24.00 | a | 13.60 | a | 37.17 | a | |||
1997 | 8.65 | 18.23 | 27.72 | d | 40.80 | b | 50.73 | e | 67.11 | c | 68.39 | c | 64.71 | b | 61.13 | c | 49.69 | e | 28.78 | c | ----- | z | 44.18 | a | ||
1998 | ----- | z | 30.11 | e | 28.48 | b | 45.87 | c | 60.41 | b | 62.03 | 68.73 | 68.87 | 62.57 | h | 48.95 | l | 35.33 | f | 21.92 | 48.30 | d | ||||
1999 | 10.19 | d | 23.91 | 30.34 | b | 45.68 | b | 58.46 | c | 65.16 | a | 72.19 | d | 67.25 | e | 57.92 | d | 46.05 | a | 37.21 | b | 21.87 | d | 44.69 | ||
2000 | 12.13 | 22.53 | 36.62 | a | 42.14 | a | 58.29 | c | 61.15 | c | 69.05 | b | 68.24 | f | 57.71 | d | 49.84 | f | 31.43 | a | 4.79 | b | 39.58 | b | ||
2001 | 18.73 | a | 9.17 | a | 25.89 | 44.46 | f | 57.02 | a | 64.98 | 69.77 | 69.30 | a | 57.98 | c | 45.71 | 42.03 | a | 24.53 | 44.10 | a | |||||
2002 | 20.24 | h | 24.05 | 20.06 | 41.20 | 50.02 | 66.82 | 72.67 | a | 66.88 | g | 61.12 | 39.61 | 29.45 | a | 22.40 | 42.74 | b | ||||||||
2003 | 10.18 | 11.22 | a | 26.75 | a | 42.81 | a | 54.34 | 63.43 | a | 68.65 | 70.79 | 59.60 | 46.68 | a | 30.23 | 21.97 | 42.22 | ||||||||
2004 | 7.05 | 19.83 | 30.45 | 41.61 | b | 51.82 | 61.14 | h | 67.13 | a | 61.35 | d | 63.45 | 48.03 | a | ----- | z | ----- | z | 43.41 | c | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 8.50 | 15.75 | 27.58 | 42.21 | 55.31 | 63.97 | 69.01 | 66.71 | 57.49 | 46.57 | 30.54 | 15.10 | 41.40 | |||||||||||||
S.D. | 5.69 | 5.88 | 4.77 | 3.06 | 3.79 | 2.66 | 2.31 | 2.64 | 2.61 | 3.36 | 4.08 | 5.64 | 1.43 | |||||||||||||
SKEW | -0.16 | 0.49 | 0.04 | -0.18 | 0.24 | -0.61 | -0.26 | -0.13 | -0.08 | 0.60 | 0.32 | -0.49 | 0.07 | |||||||||||||
MAX | 19.16 | 30.11 | 36.62 | 48.33 | 64.08 | 67.88 | 72.67 | 71.35 | 63.45 | 57.44 | 42.03 | 24.53 | 44.69 | |||||||||||||
MIN | -1.96 | 6.85 | 18.68 | 36.15 | 49.18 | 57.18 | 62.98 | 61.35 | 51.35 | 39.61 | 23.18 | 2.77 | 38.32 | |||||||||||||
YRS | 36 | 38 | 38 | 35 | 34 | 31 | 34 | 36 | 37 | 35 | 35 | 34 | 20 |