YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.90 | 67.74 | 57.25 | 54.06 | 28.67 | a | 20.15 | 49.13 | f | |||||
1948 | 11.65 | d | 13.87 | c | 28.20 | d | 42.94 | f | 49.31 | 58.85 | 64.65 | a | 67.05 | 61.20 | 48.39 | 34.91 | a | 20.97 | 41.73 | a | ||||||
1949 | 17.88 | a | 13.38 | c | 24.65 | d | 43.98 | 49.75 | a | 61.15 | 66.74 | 67.66 | 55.00 | 48.47 | 34.30 | 18.46 | f | 43.91 | a | |||||||
1950 | 6.75 | c | 15.91 | 21.05 | b | 32.67 | 46.78 | a | 58.81 | a | 61.11 | 58.03 | a | 56.47 | a | 47.74 | b | ----- | z | ----- | z | 40.53 | b | |||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | 52.57 | a | 55.58 | 68.26 | l | 61.02 | 53.64 | a | 44.65 | 26.54 | e | 17.40 | a | 44.48 | e | |||
1952 | 13.52 | a | 23.31 | 25.92 | 45.08 | 50.82 | a | 60.43 | b | 66.77 | 64.37 | 58.05 | a | 43.03 | 34.17 | 25.39 | 42.57 | |||||||||
1953 | 17.55 | a | 16.44 | a | 29.70 | c | 37.48 | a | 49.06 | 56.97 | a | 64.60 | 67.80 | a | 57.12 | 51.21 | 36.67 | 21.19 | 42.15 | |||||||
1954 | 10.85 | a | 27.43 | 25.52 | 39.33 | 44.98 | 60.40 | 65.85 | 65.16 | 56.23 | 45.18 | 35.97 | 23.94 | 41.74 | ||||||||||||
1955 | 15.34 | 15.80 | a | 20.63 | 46.32 | 51.61 | 61.67 | 69.53 | 70.03 | 57.48 | 47.77 | 26.38 | 14.76 | 41.44 | ||||||||||||
1956 | 18.26 | 16.53 | 25.42 | a | 37.08 | 48.22 | a | 58.77 | 60.82 | 63.85 | e | 54.12 | 53.23 | 32.73 | 21.60 | 40.88 | ||||||||||
1957 | 7.89 | 16.64 | 25.18 | 41.38 | 50.94 | 56.83 | 66.42 | 66.03 | 56.37 | 47.10 | 32.95 | 23.02 | 40.90 | |||||||||||||
1958 | ----- | z | ----- | z | 29.82 | l | 41.91 | b | 50.82 | 55.97 | 63.32 | 64.94 | 59.73 | 48.68 | 34.27 | 7.38 | o | 52.45 | d | |||||||
1959 | 7.62 | a | 14.16 | 28.95 | 40.84 | a | 52.18 | a | 61.17 | ----- | z | ----- | z | 59.27 | 43.53 | 24.33 | 28.26 | 36.03 | b | |||||||
1960 | 15.52 | 18.10 | 20.02 | 36.83 | r | 47.39 | 58.02 | 65.85 | 67.02 | ----- | z | 47.36 | c | 35.32 | 22.39 | q | 41.62 | c | ||||||||
1961 | 13.09 | d | 23.29 | 32.19 | 37.31 | a | 49.84 | 58.84 | h | ----- | z | 69.90 | e | 60.75 | d | 49.24 | 33.63 | 19.15 | 38.84 | b | ||||||
1962 | 9.79 | 12.65 | a | 26.98 | 37.37 | 49.94 | 54.59 | b | 62.38 | r | 64.06 | 55.83 | 48.80 | a | 36.88 | 18.40 | 37.75 | a | ||||||||
1963 | 5.97 | a | 10.21 | 28.53 | 40.92 | 50.88 | a | 58.31 | a | 68.16 | 63.82 | 59.07 | 57.00 | 37.87 | 13.66 | 41.20 | ||||||||||
1964 | 19.27 | 18.18 | a | 25.23 | 38.65 | 53.76 | 57.03 | a | 67.34 | b | ----- | z | 55.74 | e | 47.42 | 34.15 | 14.93 | a | 39.25 | a | ||||||
1965 | 10.68 | a | 8.44 | c | 19.71 | 39.37 | 51.62 | a | 57.52 | 62.44 | 65.29 | 52.70 | 48.23 | 32.35 | 25.95 | a | 39.52 | |||||||||
1966 | 6.42 | a | 18.34 | 30.30 | a | 37.38 | 49.77 | 62.34 | a | 69.79 | 64.42 | 57.27 | 46.68 | 30.37 | 18.15 | 40.94 | ||||||||||
1967 | 15.29 | 6.70 | a | 28.50 | 40.82 | 46.10 | 59.22 | a | 66.08 | 64.74 | 58.40 | 46.19 | 31.35 | 21.37 | 40.40 | |||||||||||
1968 | 13.85 | a | 13.81 | 34.74 | 43.60 | 48.47 | 57.43 | 66.82 | a | 64.29 | 59.22 | 50.44 | 33.33 | 18.44 | 42.04 | |||||||||||
1969 | 13.74 | 15.55 | 24.19 | 40.97 | 52.42 | 56.31 | a | 65.90 | 70.69 | 59.65 | 44.95 | 32.87 | 22.81 | 41.67 | ||||||||||||
1970 | 7.37 | 14.98 | 24.15 | 40.02 | 47.32 | 62.42 | 71.69 | 67.03 | 58.24 | a | 47.60 | 30.92 | 17.31 | 40.75 | ||||||||||||
1971 | 6.50 | 14.68 | 23.62 | a | 39.47 | 49.58 | 60.00 | 63.85 | a | 64.58 | 58.26 | a | ----- | z | ----- | z | ----- | z | 42.28 | c | ||||||
1972 | 6.75 | a | 9.88 | 22.90 | e | 34.00 | 52.09 | c | 61.07 | b | 64.90 | j | 63.18 | a | 54.63 | 43.87 | 30.64 | a | 14.52 | 35.78 | a | |||||
1973 | 16.18 | a | 16.96 | a | 32.18 | a | 38.88 | a | 47.08 | 60.97 | 68.16 | 66.87 | a | 54.55 | 51.55 | 33.77 | 14.48 | j | 44.29 | a | ||||||
1974 | 10.16 | 19.85 | a | 22.84 | b | 36.95 | 47.77 | 61.27 | 68.97 | ----- | z | ----- | z | 41.92 | a | 30.37 | ----- | z | 37.79 | c | ||||||
1975 | 13.40 | b | 14.28 | a | 21.67 | a | 31.45 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.20 | h |
1976 | ----- | z | ----- | z | ----- | z | 43.90 | t | 50.95 | a | ----- | z | ----- | z | ----- | z | 51.15 | q | 39.34 | c | 25.87 | 6.67 | b | 30.71 | h | |
1977 | 1.07 | b | 18.38 | 33.28 | a | 42.04 | c | 56.16 | 58.86 | e | 66.31 | 60.31 | 54.28 | a | 45.40 | 31.75 | 16.34 | 40.35 | ||||||||
1978 | 8.48 | 10.75 | 26.42 | 38.67 | d | 50.68 | c | 60.88 | b | 64.02 | f | 64.02 | c | 57.39 | h | 46.29 | c | 29.29 | b | ----- | z | 37.27 | c | |||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.17 | o | 24.92 | 24.92 | k | |
1980 | 14.15 | 16.02 | 23.52 | d | 43.05 | a | 54.35 | a | 61.00 | 68.26 | b | 66.61 | c | 55.87 | 42.96 | c | 33.67 | 15.47 | 41.24 | |||||||
1981 | 16.77 | 20.23 | 31.85 | d | 42.12 | 53.97 | 60.53 | a | 68.48 | a | 67.08 | 57.12 | 44.33 | a | 38.48 | ----- | z | 45.54 | a | |||||||
1982 | 1.39 | c | 13.59 | e | 26.50 | b | 37.12 | d | 53.42 | a | 55.85 | d | 63.83 | b | 61.17 | a | 56.02 | d | 46.23 | a | 27.46 | c | 20.56 | d | 38.59 | |
1983 | 17.79 | b | 24.94 | d | 29.57 | c | 38.70 | b | 49.40 | 60.07 | b | 71.88 | b | 71.90 | 60.07 | b | 46.89 | 32.27 | d | 8.07 | a | 42.63 | ||||
1984 | 12.82 | c | 27.96 | c | 23.39 | 43.11 | b | 52.24 | b | 61.85 | c | 69.09 | b | 69.13 | a | 55.07 | a | 49.41 | b | 31.48 | c | 18.31 | 42.82 | |||
1985 | 11.52 | c | 16.12 | b | 33.22 | b | 44.23 | d | 55.55 | c | 57.18 | k | 67.41 | h | 63.62 | b | 55.36 | b | 46.31 | b | 24.69 | a | ----- | z | 38.96 | c |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.27 | c | 54.04 | f | 42.45 | 29.23 | 19.12 | a | 38.27 | h | ||
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.24 | 65.73 | 49.98 | 40.26 | 28.10 | 23.37 | d | 44.95 | f | |||||
1994 | 2.50 | a | 8.00 | a | 28.18 | 39.77 | 48.32 | a | 58.64 | a | 61.68 | 62.03 | a | 57.42 | 47.11 | c | 35.08 | d | 22.20 | a | 39.24 | |||||
1995 | 16.57 | b | 14.22 | a | 27.08 | 34.38 | a | 48.27 | 56.41 | a | 63.33 | a | 65.50 | 54.17 | 45.37 | ----- | z | ----- | z | 42.53 | b | |||||
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.74 | a | 47.02 | a | 26.64 | e | 17.79 | b | 38.05 | h |
1997 | 11.11 | 18.55 | 26.38 | c | 35.96 | d | 47.82 | a | 60.91 | c | 72.00 | d | 68.53 | 60.30 | b | 46.09 | b | 30.59 | b | 22.75 | a | 41.75 | ||||
1998 | 17.27 | a | 32.50 | 25.71 | 44.20 | b | 56.03 | 59.08 | ----- | z | ----- | z | 61.12 | i | 48.81 | 35.60 | 22.79 | 38.00 | c | |||||||
1999 | 11.52 | 24.59 | 31.34 | 42.28 | 52.98 | b | 59.75 | b | 69.55 | 65.44 | d | 58.68 | b | 44.06 | 39.02 | 23.34 | 43.55 | |||||||||
2000 | 14.42 | 24.41 | 35.10 | 38.48 | 51.18 | f | 57.41 | h | 64.40 | a | 67.15 | a | 56.47 | a | 48.53 | 33.52 | 11.15 | a | 39.36 | b | ||||||
2001 | 19.48 | f | 13.27 | 25.00 | i | 41.00 | 54.76 | b | 60.88 | a | 66.86 | b | 71.38 | c | 57.31 | a | 45.79 | 41.80 | 26.68 | 47.97 | b | |||||
2002 | 18.27 | g | 24.91 | 20.94 | 38.91 | a | 46.45 | 58.60 | a | 69.92 | 66.66 | l | 59.42 | 39.71 | 30.08 | 23.53 | 41.25 | b | ||||||||
2003 | 12.18 | 11.21 | 23.48 | 37.52 | 48.02 | 55.60 | 66.47 | 68.68 | 59.32 | 44.98 | 30.77 | 23.74 | 40.16 | |||||||||||||
2004 | 8.90 | a | 19.12 | 29.56 | 38.50 | 46.60 | 56.22 | 63.00 | 60.45 | 60.55 | 47.48 | 36.59 | a | 18.63 | 40.47 | |||||||||||
2005 | 9.84 | i | 22.32 | 25.29 | 41.15 | 47.42 | 58.55 | 66.81 | 66.15 | a | 60.88 | 47.97 | 33.85 | 20.74 | 44.65 | a | ||||||||||
2006 | 26.44 | 15.84 | 30.19 | 43.48 | 49.69 | 61.68 | 71.98 | a | ----- | z | 55.60 | a | ----- | z | ----- | z | 25.71 | 42.29 | c | |||||||
2007 | 18.02 | 8.27 | 31.12 | a | 36.60 | 50.63 | 59.10 | 65.47 | 65.34 | b | 58.98 | a | 48.58 | a | 32.62 | 16.16 | 40.91 | |||||||||
2008 | 13.60 | 11.45 | 22.19 | 38.02 | a | 46.05 | 58.42 | 64.21 | 64.24 | 57.27 | 45.83 | a | 32.25 | d | 16.22 | v | 41.23 | a | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.17 | 16.79 | 26.75 | 39.63 | 50.22 | 59.04 | 66.45 | 65.57 | 57.23 | 46.76 | 32.33 | 19.75 | 41.16 | |||||||||||||
S.D. | 5.11 | 5.65 | 4.05 | 3.23 | 2.81 | 2.08 | 2.96 | 2.99 | 2.43 | 3.35 | 3.77 | 4.74 | 1.17 | |||||||||||||
SKEW | -0.02 | 0.58 | 0.22 | -0.25 | 0.31 | -0.29 | 0.08 | -0.09 | -0.47 | 0.32 | -0.06 | -0.71 | -0.13 | |||||||||||||
MAX | 26.44 | 32.50 | 35.10 | 46.32 | 56.16 | 62.42 | 72.00 | 71.90 | 61.20 | 57.00 | 41.80 | 28.26 | 43.55 | |||||||||||||
MIN | 1.07 | 6.70 | 19.71 | 31.45 | 44.98 | 54.59 | 60.82 | 58.03 | 49.98 | 39.34 | 24.33 | 6.67 | 38.59 | |||||||||||||
YRS | 45 | 48 | 47 | 47 | 49 | 46 | 43 | 46 | 48 | 52 | 50 | 43 | 24 |