YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.11 | u | 23.71 | 23.71 | k | |
1957 | 6.00 | e | 19.81 | b | 23.77 | a | 35.63 | 43.84 | 57.60 | 57.06 | 53.35 | 51.41 | a | 38.60 | a | 31.83 | a | 24.87 | 36.98 | |||||||
1958 | 15.61 | 11.77 | f | 25.37 | a | 36.21 | b | 42.52 | 48.10 | a | 59.10 | 57.90 | a | 49.20 | 37.86 | b | 31.57 | 10.90 | a | 37.67 | a | |||||
1959 | 13.26 | 11.22 | a | 22.84 | 37.31 | a | 47.83 | a | 54.31 | a | 60.42 | 59.35 | 51.63 | 39.16 | 26.66 | a | 20.45 | 37.04 | ||||||||
1960 | 15.23 | 17.18 | a | 12.81 | 36.97 | 46.39 | 54.27 | 56.90 | a | 56.39 | 51.27 | 39.27 | a | 31.03 | a | 11.77 | 35.79 | |||||||||
1961 | 9.40 | a | 16.54 | 22.74 | 31.07 | 41.74 | 53.28 | a | 59.00 | 57.53 | a | 55.23 | 40.48 | 30.43 | 18.10 | b | 36.30 | |||||||||
1962 | 11.42 | 10.07 | 22.03 | 34.00 | a | 45.69 | b | 53.79 | a | 57.06 | 56.03 | 48.13 | 41.03 | a | 27.03 | 15.63 | a | 35.16 | ||||||||
1963 | 10.45 | 7.48 | c | 24.80 | a | 34.17 | 43.83 | a | 53.70 | 58.00 | 54.62 | e | 45.50 | 42.87 | a | 35.20 | 13.10 | a | 35.31 | |||||||
1964 | 18.87 | 14.59 | 25.47 | a | 32.03 | 47.65 | 51.57 | 59.13 | 55.72 | m | 48.00 | 36.16 | 31.23 | 17.80 | a | 34.77 | a | |||||||||
1965 | 9.55 | 10.71 | 20.52 | 30.87 | 45.63 | a | 50.63 | 54.84 | 54.60 | a | 49.43 | 33.84 | 25.63 | 19.84 | 33.84 | |||||||||||
1966 | 9.61 | 13.57 | 22.81 | 29.57 | 39.90 | 52.67 | 57.90 | 55.39 | 45.83 | 34.94 | 28.83 | 16.84 | 33.99 | |||||||||||||
1967 | 18.27 | a | 7.14 | 17.19 | 30.90 | 36.35 | 56.03 | 58.13 | 55.73 | a | 46.77 | 37.52 | 25.29 | b | 19.27 | a | 34.05 | |||||||||
1968 | 4.41 | b | 8.68 | a | 25.45 | 36.97 | 41.72 | b | 52.83 | a | 59.65 | ----- | z | 51.00 | a | 39.32 | i | 28.24 | a | 12.32 | 32.13 | b | ||||
1969 | 9.52 | b | ----- | z | ----- | z | 32.78 | l | ----- | z | 50.41 | h | 55.66 | b | 59.17 | g | 51.66 | a | 37.87 | 27.79 | b | 12.00 | b | 32.41 | f | |
1970 | 7.39 | 16.20 | c | 23.65 | 36.67 | 46.79 | b | 55.14 | a | 60.73 | p | 58.29 | 52.43 | 42.32 | 32.27 | ----- | z | 37.11 | b | |||||||
1971 | 8.06 | 9.78 | a | 20.87 | 33.66 | a | 44.11 | c | 56.11 | b | 59.53 | a | 55.40 | a | 54.50 | 46.24 | b | 30.20 | 23.13 | a | 36.80 | |||||
1972 | 16.84 | 10.97 | 21.10 | 30.43 | 45.83 | a | 54.13 | g | 63.37 | a | 54.26 | ----- | z | ----- | z | 28.22 | c | 23.67 | d | 32.74 | c | |||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.83 | 42.42 | 31.87 | 21.41 | b | 36.13 | h | |||
1974 | 15.48 | h | 12.33 | a | ----- | z | ----- | z | 43.23 | 55.73 | ----- | z | ----- | z | ----- | z | 35.10 | 32.30 | 23.42 | 33.68 | f | |||||
1975 | 19.97 | b | 19.93 | a | 21.96 | c | 29.50 | 49.19 | 56.91 | g | 60.23 | 56.96 | d | 47.81 | c | ----- | z | ----- | z | ----- | z | 38.19 | d | |||
1976 | ----- | z | 12.52 | h | 20.61 | m | 42.08 | r | ----- | z | ----- | z | 55.11 | c | ----- | z | 45.67 | 31.00 | f | 27.53 | 13.81 | d | 35.53 | h | ||
1977 | 3.21 | c | 16.04 | b | 29.18 | c | 36.37 | 43.47 | n | 51.45 | a | 59.03 | b | 58.58 | 50.90 | 39.42 | g | ----- | z | ----- | z | 38.10 | d | |||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | 46.32 | 54.33 | 58.94 | 60.65 | 49.34 | a | 38.96 | e | 32.44 | c | 20.38 | j | 48.71 | e | ||||
1979 | 14.14 | i | 8.64 | 29.85 | e | 38.87 | 48.55 | 53.14 | a | 52.90 | 57.34 | b | 51.13 | 41.39 | 36.07 | 24.39 | 40.21 | a | ||||||||
1980 | 16.87 | ----- | z | 19.75 | s | 38.22 | c | 50.58 | 52.48 | c | 62.15 | d | 63.71 | 59.95 | k | 42.08 | g | 26.88 | v | ----- | z | 47.34 | f | |||
1981 | 10.29 | 25.21 | 25.70 | d | 39.09 | g | 46.00 | f | ----- | z | 58.07 | p | 56.81 | 49.23 | 38.93 | b | 26.21 | f | 17.17 | a | 31.91 | e | ||||
1982 | 3.43 | c | 13.19 | b | 18.45 | b | 29.03 | 44.84 | f | 51.69 | a | 58.43 | a | 55.75 | g | 52.91 | h | 38.41 | d | 37.24 | i | 23.21 | c | 29.48 | d | |
1983 | 14.90 | 14.88 | d | 25.45 | 32.86 | a | 45.46 | e | 53.07 | a | ----- | z | 54.07 | a | 46.76 | a | ----- | z | 30.17 | 17.59 | b | 33.52 | b | |||
1984 | 9.76 | b | 21.93 | 17.65 | e | 33.87 | ----- | z | 56.17 | r | 58.52 | 59.48 | b | 45.64 | b | 41.80 | a | 26.10 | 23.74 | 33.85 | b | |||||
1985 | 8.28 | b | 15.96 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.14 | b | 31.31 | a | ----- | z | 23.67 | h |
1986 | 14.86 | b | 13.61 | 23.97 | 35.93 | b | 47.54 | c | 51.03 | a | ----- | z | 55.35 | 49.23 | 38.81 | 26.63 | 22.26 | 34.47 | a | |||||||
1987 | 13.63 | a | 11.92 | b | 23.79 | c | 34.36 | b | 47.20 | f | 55.72 | a | 60.57 | a | 56.00 | c | 52.25 | b | 35.27 | a | 30.19 | c | 23.83 | a | 36.14 | a |
1988 | 13.26 | l | 15.34 | 25.14 | c | 34.45 | a | 45.38 | b | 52.66 | a | 61.63 | d | 60.72 | b | 48.80 | 35.62 | b | 32.27 | d | 18.31 | b | 39.12 | a | ||
1989 | 18.74 | 16.11 | 21.68 | c | 33.21 | a | 46.59 | b | 57.43 | 61.24 | j | 56.97 | a | ----- | z | ----- | z | ----- | z | ----- | z | 35.82 | e | |||
1990 | ----- | z | 18.57 | e | 22.69 | e | 35.71 | f | 44.21 | c | 54.35 | g | 59.00 | l | 58.67 | g | ----- | z | ----- | z | ----- | z | ----- | z | 28.49 | i |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | 29.77 | 38.03 | 51.16 | 55.70 | 60.90 | 61.52 | 53.70 | 42.74 | 32.53 | 26.71 | 45.28 | b | ||||||||||
1999 | 15.87 | 21.57 | 25.00 | 36.57 | 47.97 | 58.03 | 63.87 | 58.19 | 55.63 | 39.71 | 35.63 | 24.30 | a | 40.20 | ||||||||||||
2000 | 14.97 | a | 20.34 | 30.97 | 35.70 | 48.48 | 56.50 | 57.81 | 58.03 | 50.33 | 41.26 | 29.87 | 13.90 | 38.18 | ||||||||||||
2001 | 17.94 | 18.11 | 23.45 | 37.00 | 47.87 | 56.30 | 56.03 | a | 61.74 | 50.50 | 42.00 | 35.37 | 27.42 | 39.48 | ||||||||||||
2002 | 24.71 | 22.93 | 27.52 | 38.27 | 42.97 | 55.23 | 61.16 | 60.71 | 54.27 | 39.19 | 30.23 | 20.65 | 39.82 | |||||||||||||
2003 | 10.48 | 13.61 | 23.68 | 33.73 | 45.23 | 54.07 | 59.84 | 61.71 | 52.73 | 38.45 | 34.00 | a | 21.77 | 37.44 | ||||||||||||
2004 | 7.48 | 17.03 | 27.81 | 36.43 | 51.06 | ----- | z | 59.48 | 59.00 | ----- | z | ----- | z | ----- | z | ----- | z | 36.90 | e | |||||||
2005 | ----- | z | ----- | z | 22.45 | 38.60 | 40.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.95 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.40 | 15.03 | 23.64 | 34.63 | 45.53 | 54.02 | 58.82 | 57.70 | 50.14 | 39.27 | 30.48 | 19.62 | 36.69 | |||||||||||||
S.D. | 5.17 | 4.60 | 3.74 | 2.87 | 3.29 | 2.28 | 2.42 | 2.61 | 2.83 | 2.79 | 2.96 | 4.70 | 2.08 | |||||||||||||
SKEW | 0.16 | 0.21 | -0.45 | -0.43 | -0.53 | -0.33 | -0.18 | 0.38 | 0.10 | 0.12 | 0.06 | -0.34 | 0.25 | |||||||||||||
MAX | 24.71 | 25.21 | 30.97 | 38.87 | 51.16 | 58.03 | 63.87 | 63.71 | 55.63 | 46.24 | 36.07 | 27.42 | 40.20 | |||||||||||||
MIN | 3.21 | 7.14 | 12.81 | 29.03 | 36.35 | 48.10 | 52.90 | 53.35 | 45.50 | 33.84 | 25.29 | 10.90 | 33.84 | |||||||||||||
YRS | 33 | 34 | 35 | 34 | 33 | 31 | 32 | 32 | 33 | 31 | 33 | 33 | 15 |