YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | 16.68 | f | 23.23 | i | ----- | z | 40.90 | k | 57.72 | a | ----- | z | 58.19 | e | 52.29 | i | 40.29 | 32.63 | 23.52 | 42.47 | g | |||
1982 | 18.60 | f | 20.92 | b | 29.13 | a | 35.33 | 43.30 | a | 48.45 | a | 57.29 | 57.83 | a | 50.10 | 35.84 | 26.27 | d | 23.63 | d | 38.92 | a | ||||
1983 | 25.48 | b | 25.46 | b | 28.30 | a | 31.17 | 37.61 | c | 49.97 | 57.57 | c | 58.90 | 49.70 | c | 37.00 | c | 27.08 | e | 9.00 | d | 36.44 | ||||
1984 | 15.04 | c | 19.35 | c | 24.39 | 27.73 | 43.79 | c | 50.57 | 55.35 | 54.52 | 44.93 | 28.77 | a | 24.65 | d | 21.00 | g | 35.37 | a | ||||||
1985 | 13.84 | 13.44 | a | 24.84 | 37.83 | 45.55 | b | 51.89 | b | 55.82 | c | 55.38 | b | 44.86 | a | 39.31 | e | 24.39 | g | 17.16 | f | 38.28 | b | |||
1986 | 25.00 | b | 21.23 | f | 31.41 | d | 36.18 | b | 41.00 | d | 53.48 | a | 57.29 | 54.47 | a | 48.59 | a | 37.18 | c | 23.68 | e | 21.46 | c | 39.07 | a | |
1987 | 18.92 | e | 24.15 | a | 28.24 | b | 39.46 | d | 48.96 | c | 56.50 | 60.88 | f | 61.56 | f | 53.87 | g | 45.79 | g | 36.76 | i | 32.53 | l | 36.04 | f | |
1988 | 20.70 | k | ----- | z | ----- | z | 35.64 | e | 44.68 | f | 58.96 | e | 62.42 | g | 58.14 | b | 50.24 | i | 44.20 | f | 36.00 | i | ----- | z | 50.91 | i |
1989 | 28.77 | i | 18.89 | i | ----- | z | 37.76 | e | 44.92 | f | 49.83 | f | 57.13 | h | 55.67 | g | 47.50 | h | 37.87 | h | 25.42 | k | 20.24 | n | 37.76 | k |
1990 | 24.09 | h | 22.38 | g | 30.46 | e | 38.17 | g | 42.36 | f | 57.12 | d | 55.90 | k | 56.74 | d | 52.95 | h | 38.50 | g | 32.10 | i | 19.68 | l | 48.11 | i |
1991 | 14.61 | h | 22.62 | g | 28.77 | 34.17 | 44.82 | c | 54.60 | 56.77 | e | 56.57 | a | 47.46 | b | 36.24 | f | 22.12 | e | 20.35 | h | 43.16 | d | |||
1992 | 21.56 | f | 26.65 | f | 29.70 | d | 38.96 | e | 44.32 | f | 49.84 | e | 54.88 | g | 53.67 | g | 47.39 | g | 40.00 | g | 23.44 | l | 16.94 | o | 39.50 | i |
1993 | 15.79 | l | 18.24 | c | 29.31 | b | 33.59 | c | 44.62 | j | 51.88 | d | 56.79 | g | 55.56 | f | 40.55 | h | 31.80 | k | 23.24 | m | 20.39 | h | 33.26 | h |
1994 | 21.05 | l | 18.73 | f | 30.08 | f | 35.30 | g | 46.04 | h | 56.46 | d | 54.78 | h | 58.96 | d | 47.23 | h | 39.42 | l | 25.94 | l | 23.06 | m | 57.71 | j |
1995 | 20.55 | k | 24.10 | h | 26.64 | i | 30.05 | j | 39.38 | j | 50.57 | i | 55.33 | m | 57.05 | i | 44.72 | l | 33.90 | j | 25.18 | m | 24.59 | n | ----- | z |
1996 | 9.50 | m | 23.26 | j | 21.24 | j | 37.10 | i | 48.19 | j | 53.18 | h | 57.40 | f | 55.08 | f | 43.39 | g | 34.04 | h | 27.11 | k | 17.89 | m | ----- | z |
1997 | 17.16 | l | 18.59 | k | 27.86 | j | 30.77 | h | 39.73 | i | 52.38 | i | 57.92 | g | 55.95 | j | 52.14 | i | 37.20 | k | 25.19 | n | 24.71 | j | ----- | z |
1998 | 20.47 | n | 23.06 | l | 23.55 | k | 32.45 | h | 45.11 | l | 47.05 | h | 60.59 | i | 56.35 | h | 51.75 | j | 40.15 | k | 30.06 | l | 20.26 | l | ----- | z |
1999 | 22.50 | m | 26.41 | k | 29.91 | h | 33.05 | i | 40.44 | o | 48.62 | i | 58.05 | l | 54.45 | i | 41.33 | l | 37.16 | l | 30.67 | l | 24.35 | k | ----- | z |
2000 | 22.56 | m | 27.37 | j | 29.96 | h | 35.55 | j | 44.00 | j | 51.52 | i | 58.11 | l | 59.13 | h | 48.05 | k | 39.19 | j | 21.00 | l | 16.76 | j | ----- | z |
2001 | 17.84 | l | 18.20 | h | 29.24 | f | 38.00 | i | 41.83 | m | 50.00 | j | 54.89 | m | 51.90 | k | 51.89 | u | 32.05 | j | 24.24 | m | 22.44 | m | ----- | z |
2002 | 18.60 | k | 16.12 | k | 22.48 | j | 34.91 | h | 38.40 | k | 49.88 | m | 62.14 | j | 57.05 | j | 50.70 | j | 33.62 | j | 25.88 | m | 20.61 | m | ----- | z |
2003 | 21.15 | k | 17.00 | k | ----- | z | 39.78 | u | ----- | z | 50.38 | i | 60.05 | j | 59.50 | k | 46.15 | j | 42.33 | j | 26.88 | n | 20.19 | j | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.66 | 20.26 | 28.46 | 35.26 | 43.58 | 53.65 | 56.68 | 56.97 | 47.61 | 36.40 | 26.07 | 19.40 | 36.44 | |||||||||||||
S.D. | 5.44 | 4.34 | 2.24 | 3.50 | 3.58 | 3.47 | 0.90 | 1.71 | 2.29 | 4.08 | 3.67 | 7.01 | 0.0 | |||||||||||||
SKEW | 0.09 | -0.34 | -0.81 | -0.83 | -0.25 | 0.04 | -0.55 | -0.36 | -0.26 | -1.16 | 0.91 | -1.09 | 0.00 | |||||||||||||
MAX | 25.48 | 25.46 | 31.41 | 39.46 | 48.96 | 58.96 | 57.57 | 58.96 | 50.10 | 40.29 | 32.63 | 23.63 | 36.44 | |||||||||||||
MIN | 13.84 | 13.44 | 24.39 | 27.73 | 37.61 | 48.45 | 55.35 | 54.47 | 44.86 | 28.77 | 22.12 | 9.00 | 36.44 | |||||||||||||
YRS | 5 | 6 | 10 | 11 | 7 | 13 | 6 | 10 | 6 | 6 | 6 | 4 | 1 |