YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.20 | u | 42.38 | d | 31.76 | b | 23.70 | 9.68 | 26.88 | h | ||
1963 | 0.94 | 22.11 | 20.71 | 30.53 | 39.77 | a | 45.45 | a | 50.87 | 51.88 | g | 43.48 | a | 34.74 | d | 21.00 | a | 11.06 | 29.15 | a | ||||||
1964 | 7.81 | 14.31 | 19.58 | e | 31.69 | a | 38.10 | a | 43.52 | a | 52.55 | 47.54 | c | 37.73 | d | 28.41 | i | 18.96 | c | 15.45 | b | 29.75 | a | |||
1965 | 20.64 | c | 18.71 | 16.19 | 31.73 | 38.33 | a | 44.92 | e | 52.20 | a | 46.68 | 34.96 | f | 26.19 | e | 24.00 | k | 12.70 | h | 32.85 | c | ||||
1966 | 9.67 | d | 13.09 | e | 17.45 | b | 25.63 | 34.38 | b | 41.21 | a | 50.79 | b | 46.08 | e | 41.36 | e | 29.52 | 25.00 | b | 11.79 | b | 28.83 | |||
1967 | 16.23 | a | 19.39 | 25.55 | 28.57 | 35.43 | a | 44.53 | 51.71 | 48.86 | c | 43.43 | 32.03 | 20.30 | 10.29 | 31.36 | ||||||||||
1968 | 9.39 | 20.07 | 24.00 | a | 27.43 | b | 36.74 | 45.83 | 49.10 | 46.00 | b | 35.62 | a | 30.23 | ----- | z | 15.32 | 30.88 | a | |||||||
1969 | 19.79 | b | 16.04 | 17.10 | a | 32.41 | a | 39.87 | 44.90 | 50.19 | 51.90 | 43.50 | 29.58 | 20.53 | 16.03 | 31.82 | ||||||||||
1970 | 16.77 | 18.50 | 23.17 | a | 25.77 | 37.35 | 44.93 | 50.68 | 49.00 | 37.57 | 27.32 | 26.67 | 11.35 | 30.76 | ||||||||||||
1971 | 16.45 | 19.30 | a | 19.76 | b | 28.15 | c | 36.72 | b | 43.73 | 50.58 | 51.32 | 37.07 | 29.69 | b | 17.54 | b | 13.32 | 30.30 | |||||||
1972 | 12.37 | a | 19.56 | d | 26.14 | b | 29.83 | a | 36.84 | 49.20 | 49.90 | 49.97 | 41.73 | 36.81 | 24.86 | a | 11.00 | 32.35 | ||||||||
1973 | 3.94 | 11.96 | 22.45 | 27.90 | 37.23 | 43.97 | 48.74 | 48.77 | 39.27 | 31.23 | 20.87 | 14.10 | b | 29.20 | ||||||||||||
1974 | 6.48 | 14.96 | 26.45 | 29.57 | 37.93 | a | 46.00 | 51.48 | 46.16 | 36.07 | 32.68 | 24.40 | 13.71 | 30.49 | ||||||||||||
1975 | 11.23 | 18.75 | 24.68 | 28.28 | a | 34.03 | 42.47 | 52.23 | 42.23 | 34.47 | 27.86 | c | 16.60 | 14.50 | o | 30.25 | a | |||||||||
1976 | 7.70 | d | 15.17 | 19.65 | 31.30 | 41.55 | 41.14 | a | 52.29 | 45.48 | 39.63 | 25.30 | a | 16.73 | 10.71 | 28.89 | ||||||||||
1977 | 8.35 | 15.71 | 19.84 | 31.93 | 34.68 | 45.97 | 50.74 | 49.52 | 41.03 | 29.55 | 22.79 | a | 21.29 | c | 30.95 | |||||||||||
1978 | 18.80 | u | 17.95 | i | 27.65 | 33.03 | 38.43 | a | 45.23 | 51.15 | d | 48.22 | d | 38.41 | c | 30.00 | m | 17.29 | w | 3.57 | q | 40.30 | e | |||
1979 | ----- | z | 17.71 | u | 19.91 | t | 26.80 | 39.16 | 43.43 | b | 51.06 | 50.74 | 41.57 | 31.74 | 16.47 | 14.58 | 35.06 | c | ||||||||
1980 | 14.10 | 18.24 | 24.23 | 28.33 | 40.03 | 43.60 | 52.52 | 48.90 | 41.80 | 30.48 | 22.87 | 21.00 | 32.17 | |||||||||||||
1981 | 14.97 | 18.80 | c | 25.21 | b | 33.50 | 40.84 | 47.97 | 52.45 | 50.29 | 45.97 | 33.77 | 25.10 | a | 18.87 | 33.98 | ||||||||||
1982 | 15.77 | a | 13.21 | 25.19 | 25.47 | 37.90 | 43.00 | 51.61 | 52.60 | a | 43.45 | a | 30.87 | 19.50 | 17.61 | 31.35 | ||||||||||
1983 | 18.67 | a | 19.93 | 26.87 | 27.60 | 36.19 | 45.13 | 50.84 | 53.68 | 42.77 | 31.58 | 22.70 | c | 10.11 | c | 32.17 | ||||||||||
1984 | 0.80 | a | 10.33 | b | 24.30 | a | 27.63 | 38.58 | 42.90 | a | 53.29 | 51.39 | 41.70 | 30.55 | 21.90 | a | 14.42 | 29.82 | ||||||||
1985 | 7.87 | 10.61 | 22.77 | a | 32.30 | 39.16 | 47.90 | a | 54.71 | 48.61 | 39.37 | 32.16 | 24.28 | a | 14.14 | c | 31.16 | |||||||||
1986 | 15.21 | b | 23.07 | 30.42 | 33.57 | b | 37.48 | 47.50 | 52.16 | 50.35 | 41.90 | 31.88 | o | 24.04 | e | 11.23 | 33.36 | a | ||||||||
1987 | 11.29 | 20.32 | 21.90 | 29.70 | 42.16 | 47.07 | 53.03 | 48.06 | 42.23 | 32.48 | 27.62 | i | 16.90 | b | 33.20 | a | ||||||||||
1988 | 10.74 | d | 14.68 | a | 21.53 | a | 29.77 | 39.37 | a | 49.53 | 53.68 | 50.23 | 40.40 | 33.84 | 26.27 | 13.32 | 31.95 | |||||||||
1989 | 5.61 | 5.81 | a | 27.52 | 36.17 | 38.71 | 45.77 | 55.55 | 49.10 | 40.70 | 31.42 | 29.17 | 10.20 | a | 31.31 | |||||||||||
1990 | 13.90 | 19.96 | b | 28.68 | 34.50 | 37.23 | 47.80 | 54.39 | 49.39 | 46.97 | 33.38 | b | 23.43 | 1.19 | 32.57 | |||||||||||
1991 | 6.83 | a | 15.30 | a | 24.29 | 30.90 | 39.74 | 47.50 | ----- | z | ----- | z | ----- | z | ----- | z | 22.93 | a | 13.61 | 25.14 | d | |||||
1992 | 10.61 | 21.45 | 26.77 | 35.33 | 41.70 | a | 47.50 | 48.23 | ----- | z | 40.73 | 33.58 | e | 19.86 | b | 12.45 | 30.75 | a | ||||||||
1993 | 7.45 | 9.86 | 28.23 | 33.79 | a | 40.42 | 44.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.30 | f | |||||
1994 | ----- | z | ----- | z | ----- | z | 31.30 | 38.32 | 47.68 | e | 50.86 | j | 50.31 | e | 34.94 | l | 30.92 | e | 19.92 | d | 15.14 | i | 36.41 | f | ||
1995 | 16.91 | h | 17.82 | 24.70 | d | 27.53 | 36.48 | 39.91 | h | 46.59 | i | 48.23 | 40.40 | e | 24.10 | 21.79 | f | 15.40 | f | 31.32 | e | |||||
1996 | 7.55 | 8.76 | h | 20.48 | j | 29.05 | j | 37.18 | c | 41.60 | j | 48.22 | d | 42.44 | f | 34.48 | c | 22.44 | m | 21.25 | f | 14.96 | d | 28.48 | g | |
1997 | 8.87 | h | 14.28 | j | 17.04 | c | 23.40 | j | 39.35 | e | 48.25 | j | 51.48 | f | 49.96 | c | 46.84 | e | 27.48 | j | 20.84 | k | 11.47 | l | 38.30 | h |
1998 | 17.50 | e | 22.09 | e | 26.11 | l | 30.04 | g | 36.55 | k | 41.52 | g | 54.86 | b | 53.36 | i | 45.19 | n | 32.11 | v | 25.50 | l | 9.35 | 25.95 | h | |
1999 | 21.94 | 21.04 | 24.62 | b | 30.87 | 38.16 | 45.25 | b | 51.71 | 48.21 | b | 39.75 | b | 25.83 | b | 19.14 | b | 16.46 | c | 31.91 | ||||||
2000 | 19.19 | e | 18.44 | b | 25.41 | d | 31.93 | c | 40.12 | f | 43.38 | d | 49.80 | a | ----- | z | 38.31 | d | 31.05 | j | 10.53 | k | 13.61 | 30.01 | d | |
2001 | 6.86 | b | 17.33 | a | 27.60 | a | 33.18 | b | 39.61 | 45.15 | c | 51.72 | b | 50.23 | a | 39.79 | a | 30.85 | e | ----- | z | ----- | z | 34.23 | b | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.61 | 16.94 | 23.65 | 30.39 | 38.25 | 45.29 | 51.62 | 49.00 | 40.62 | 30.71 | 21.98 | 13.41 | 31.17 | |||||||||||||
S.D. | 5.55 | 4.04 | 3.64 | 2.82 | 1.96 | 2.11 | 1.80 | 2.29 | 3.09 | 2.86 | 3.21 | 3.81 | 1.31 | |||||||||||||
SKEW | 0.01 | -0.79 | -0.41 | 0.05 | -0.15 | 0.07 | 0.15 | -0.63 | -0.05 | -0.45 | 0.03 | -0.50 | -0.14 | |||||||||||||
MAX | 21.94 | 23.07 | 30.42 | 36.17 | 42.16 | 49.53 | 55.55 | 53.68 | 46.97 | 36.81 | 29.17 | 21.29 | 33.98 | |||||||||||||
MIN | 0.80 | 5.81 | 16.19 | 25.47 | 34.03 | 41.14 | 48.22 | 42.23 | 34.47 | 24.10 | 16.47 | 1.19 | 28.83 | |||||||||||||
YRS | 34 | 34 | 35 | 36 | 37 | 35 | 34 | 32 | 35 | 31 | 29 | 32 | 20 |