YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.96 | e | 11.52 | 15.74 | j | |
1949 | 0.37 | d | 10.00 | 22.65 | 31.93 | 41.74 | 48.70 | 53.44 | d | 51.19 | e | 43.19 | c | 31.13 | 27.25 | b | 10.23 | 30.98 | ||||||||
1950 | 3.71 | c | 18.26 | a | 18.34 | b | 25.37 | 33.79 | b | 45.10 | a | 51.13 | a | 47.55 | 43.00 | 34.55 | b | 22.69 | d | 18.90 | a | 30.20 | ||||
1951 | 11.52 | 16.18 | 15.41 | b | 26.00 | 39.61 | 43.54 | b | 53.39 | 51.55 | 40.87 | 32.03 | 18.00 | 13.30 | a | 30.12 | ||||||||||
1952 | 12.58 | 16.28 | 16.23 | 27.93 | 37.35 | 49.86 | a | 52.13 | 53.45 | 43.03 | 29.77 | 14.83 | 16.35 | 30.82 | ||||||||||||
1953 | 23.23 | 14.57 | 22.13 | 23.90 | a | 35.52 | b | 48.87 | 54.90 | 52.71 | 43.33 | 33.28 | b | 25.00 | g | 14.72 | b | 33.38 | a | |||||||
1954 | 15.87 | a | 22.21 | 15.31 | b | 31.76 | a | 38.06 | 47.48 | c | 55.84 | 51.58 | 44.40 | 32.22 | d | 23.37 | 16.81 | 32.91 | ||||||||
1955 | 9.17 | b | 8.96 | 16.27 | a | 28.23 | 37.90 | a | 45.56 | c | 52.90 | 53.58 | 43.00 | 32.94 | 19.25 | b | 20.21 | g | 31.61 | a | ||||||
1956 | 16.29 | 11.83 | 19.77 | 26.25 | b | 40.74 | 48.83 | 51.72 | b | 50.00 | b | 41.07 | 32.17 | a | 20.80 | e | 18.00 | 31.46 | ||||||||
1957 | 5.52 | 19.71 | 19.03 | 27.07 | 38.10 | 46.30 | 53.52 | 53.10 | 39.73 | d | 36.42 | 20.61 | g | 22.03 | 32.77 | a | ||||||||||
1958 | 14.42 | 19.39 | 15.83 | b | 28.57 | 42.52 | 47.87 | 49.52 | 52.79 | b | 44.43 | 34.10 | b | 21.86 | a | 18.77 | 32.51 | |||||||||
1959 | 13.29 | 12.63 | a | 20.20 | a | 27.47 | 39.03 | 48.37 | 50.68 | 53.94 | 42.03 | 31.03 | 18.47 | 18.37 | a | 31.29 | ||||||||||
1960 | 13.48 | 12.66 | 21.97 | 31.43 | 38.39 | 48.77 | 52.97 | 50.32 | 45.33 | 33.84 | 22.15 | d | 15.42 | 32.23 | ||||||||||||
1961 | 15.26 | 18.32 | 21.35 | 26.83 | 38.81 | 47.00 | 52.35 | 52.84 | 38.27 | 31.90 | 18.27 | 11.15 | e | 31.03 | ||||||||||||
1962 | 3.48 | 15.32 | 17.97 | 30.40 | 40.23 | 46.70 | 51.35 | 49.10 | a | 42.63 | 35.68 | 26.37 | 17.52 | 31.40 | ||||||||||||
1963 | 1.74 | 21.79 | 21.35 | 30.03 | a | 40.17 | b | 49.60 | 56.77 | 55.48 | b | 49.28 | a | 38.26 | 23.57 | 12.71 | 33.40 | |||||||||
1964 | 17.57 | a | 13.21 | 16.72 | b | 30.80 | 41.21 | b | 45.86 | a | 56.06 | 49.76 | b | 41.40 | 31.65 | 23.30 | 17.27 | a | 32.07 | |||||||
1965 | 18.83 | a | 16.18 | 11.58 | 34.59 | a | 38.67 | d | 48.53 | 54.10 | 50.79 | b | 39.53 | 36.42 | 27.00 | 17.68 | 32.82 | |||||||||
1966 | 9.27 | a | 12.18 | 22.32 | 26.17 | a | 37.45 | 47.37 | 58.77 | 50.29 | 46.03 | a | 30.90 | 24.07 | 15.03 | 31.65 | ||||||||||
1967 | 16.83 | b | 17.68 | 26.30 | d | 29.90 | 37.32 | 47.43 | 54.10 | 49.68 | 43.90 | 32.84 | 19.53 | 9.77 | a | 32.11 | ||||||||||
1968 | 14.13 | 19.28 | 22.77 | 25.63 | 35.48 | 47.79 | a | 53.03 | 49.65 | 39.90 | 33.55 | 20.50 | 11.48 | 31.10 | ||||||||||||
1969 | 15.23 | a | 15.69 | b | 15.87 | 32.47 | 40.81 | 45.97 | 54.43 | c | 54.84 | 46.83 | 28.39 | 23.00 | 18.61 | 32.68 | ||||||||||
1970 | 14.94 | 18.56 | a | 16.28 | b | 26.50 | 38.79 | b | 46.20 | 54.17 | b | 55.19 | 40.80 | 29.26 | 23.40 | 14.26 | 31.53 | |||||||||
1971 | 16.83 | a | 15.39 | 19.32 | 28.67 | 36.94 | 48.13 | 51.00 | b | 51.61 | 39.97 | 30.79 | c | 20.93 | b | 13.39 | 31.08 | |||||||||
1972 | 11.40 | a | 17.85 | c | 24.28 | b | 29.72 | a | 37.87 | 50.70 | 51.48 | 52.19 | 43.53 | 32.94 | 18.83 | a | 9.35 | 31.68 | ||||||||
1973 | 12.58 | 16.61 | 23.42 | 26.60 | 36.10 | 47.00 | a | 52.10 | 52.48 | 44.39 | b | 35.03 | 23.00 | 17.52 | 32.24 | |||||||||||
1974 | 10.32 | 21.00 | 24.97 | 30.15 | d | 38.81 | 47.97 | a | 53.66 | b | 48.52 | 39.13 | 33.71 | 21.53 | 12.69 | b | 31.87 | |||||||||
1975 | 14.50 | c | 13.07 | 18.37 | a | 25.00 | 35.77 | 44.80 | 53.41 | b | 50.28 | b | 39.30 | 30.77 | 19.33 | 19.17 | a | 30.31 | ||||||||
1976 | 13.58 | 22.00 | a | 18.68 | 30.70 | 38.00 | 45.45 | a | 54.81 | 51.10 | 43.52 | a | 26.59 | d | 18.93 | 15.26 | 31.55 | |||||||||
1977 | 6.06 | 18.68 | 18.44 | d | 32.13 | 42.00 | 52.27 | 56.19 | 51.74 | 45.38 | a | 33.17 | a | 21.33 | 16.80 | a | 32.85 | |||||||||
1978 | 8.81 | 12.96 | 24.26 | 32.40 | 37.37 | a | 47.03 | 54.42 | 50.48 | 42.87 | 32.14 | b | 20.90 | 8.87 | a | 31.04 | ||||||||||
1979 | 2.48 | 17.11 | a | 24.37 | a | 31.70 | 37.83 | b | 47.38 | d | 54.68 | 51.28 | b | 46.17 | 35.90 | 16.97 | 19.66 | b | 32.13 | |||||||
1980 | 11.72 | b | 16.28 | 21.10 | b | 29.59 | a | 38.94 | 48.43 | b | 55.26 | 51.93 | a | 44.20 | 27.04 | d | 20.30 | 20.93 | a | 32.14 | ||||||
1981 | 14.29 | 12.54 | b | 23.00 | a | 32.28 | a | 37.19 | 47.67 | 53.70 | a | 49.35 | 43.97 | 29.89 | c | 24.17 | 14.45 | 31.87 | ||||||||
1982 | 7.89 | c | 10.18 | 18.32 | 22.00 | 35.70 | a | 42.67 | c | 51.65 | 54.48 | 44.50 | b | 32.06 | 18.76 | a | 16.96 | e | 29.60 | |||||||
1983 | 18.61 | c | 18.00 | d | 23.03 | 23.89 | c | 35.52 | b | 47.11 | b | 53.28 | b | 56.76 | b | 38.54 | f | 31.21 | g | 18.35 | g | -0.55 | i | 34.52 | d | |
1984 | 6.81 | d | 15.59 | b | 21.08 | e | 26.12 | e | 41.12 | g | 47.63 | c | 54.78 | d | 54.80 | f | 41.42 | d | 30.48 | f | 21.48 | c | 12.00 | a | 27.44 | c |
1985 | 7.55 | b | 9.79 | 20.47 | a | 31.45 | a | 40.81 | 47.11 | c | 55.15 | d | 49.86 | c | 39.33 | 31.35 | 11.52 | e | 6.11 | d | 29.21 | |||||
1986 | 16.46 | e | 17.29 | g | ----- | z | 34.38 | q | 38.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.33 | j | |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.19 | 24.61 | b | 14.00 | b | 23.60 | i | |
1988 | 9.45 | 15.79 | 21.64 | c | 29.73 | 40.61 | 53.41 | a | 53.97 | 54.00 | a | 44.24 | a | 35.84 | 23.33 | 14.79 | b | 33.07 | ||||||||
1989 | 17.83 | b | 9.74 | a | 24.81 | 32.17 | 41.32 | 47.17 | a | 56.00 | 53.81 | 44.13 | 34.39 | 24.55 | a | 11.53 | a | 33.12 | ||||||||
1990 | 19.55 | 16.82 | 23.45 | 31.69 | a | 37.65 | 50.73 | 53.23 | 52.65 | 48.37 | 33.06 | 26.60 | 8.69 | b | 33.54 | |||||||||||
1991 | 11.84 | 23.32 | 23.83 | a | 30.20 | 41.29 | 50.63 | 54.29 | 54.67 | a | 44.53 | 31.63 | a | 22.23 | 18.19 | 33.89 | ||||||||||
1992 | 18.07 | a | 23.81 | b | 27.61 | 33.20 | 40.81 | 48.00 | 51.81 | 50.03 | 44.50 | 34.48 | 19.90 | a | 11.80 | a | 33.67 | |||||||||
1993 | 13.32 | 14.52 | a | 26.42 | 31.63 | 41.17 | a | 46.20 | 51.81 | 51.26 | 41.77 | 32.94 | 16.48 | a | 18.60 | a | 32.18 | |||||||||
1994 | 18.07 | a | 12.86 | 25.68 | 31.63 | 42.39 | 51.17 | 53.26 | 54.29 | 46.60 | 35.39 | 22.07 | 18.97 | 34.36 | ||||||||||||
1995 | 16.50 | a | 19.52 | a | 22.57 | a | 28.53 | 38.16 | 46.70 | 53.06 | 55.23 | 45.43 | 32.61 | 25.93 | a | 17.66 | b | 33.49 | ||||||||
1996 | 8.40 | a | 17.14 | 19.27 | a | 30.37 | 40.84 | 49.20 | 54.94 | 53.00 | 43.93 | 33.52 | 21.89 | b | 15.03 | a | 32.29 | |||||||||
1997 | 12.84 | 18.00 | a | 21.96 | c | 26.10 | a | 39.77 | a | 51.00 | 53.71 | 54.10 | 47.67 | 33.90 | 21.82 | b | 18.87 | a | 33.31 | |||||||
1998 | 17.43 | a | 21.46 | 21.48 | b | 29.72 | a | 41.33 | a | 43.93 | 56.93 | a | 54.16 | 49.07 | 36.26 | 27.93 | 14.13 | 34.49 | ||||||||
1999 | 19.84 | 22.46 | b | 23.97 | a | 29.07 | a | 38.87 | 47.60 | 56.10 | 54.55 | 42.30 | 33.50 | a | 27.97 | a | 20.20 | a | 34.70 | |||||||
2000 | 17.57 | a | 22.71 | a | 24.87 | a | 30.80 | 41.65 | 46.53 | 55.97 | 55.42 | 45.00 | 35.10 | 15.59 | a | 12.32 | 33.63 | |||||||||
2001 | 16.30 | a | 15.48 | a | 24.71 | 33.73 | 39.16 | 49.13 | 57.48 | 54.35 | 46.20 | 33.48 | 24.62 | a | 16.42 | 34.26 | ||||||||||
2002 | 14.45 | 14.89 | 16.23 | a | 31.90 | 36.63 | a | 51.87 | 57.58 | 52.39 | 45.20 | 29.00 | a | 24.00 | 20.39 | 32.88 | ||||||||||
2003 | 21.55 | 14.86 | 26.07 | a | 34.07 | a | 41.10 | 46.87 | 58.32 | 55.52 | 42.41 | a | 35.55 | 22.00 | 18.33 | a | 34.72 | |||||||||
2004 | 18.16 | 15.66 | 27.10 | 32.30 | 41.65 | 46.86 | a | 53.61 | 50.74 | 44.96 | c | 35.70 | a | 24.18 | b | 20.46 | c | 34.28 | ||||||||
2005 | 19.17 | a | 20.75 | 23.97 | 30.54 | b | 38.32 | 46.90 | ----- | z | 49.03 | 43.58 | d | 32.24 | b | 24.52 | e | 11.20 | a | 30.93 | a | |||||
2006 | 19.93 | c | 10.83 | d | 19.22 | d | 30.52 | c | 38.70 | d | 49.77 | h | 57.54 | g | 53.43 | h | 37.81 | d | ----- | z | ----- | z | ----- | z | 26.17 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.28 | 16.40 | 21.14 | 29.46 | 38.93 | 47.76 | 53.98 | 52.23 | 43.41 | 32.86 | 21.77 | 15.36 | 32.28 | |||||||||||||
S.D. | 5.26 | 3.82 | 3.59 | 2.85 | 2.07 | 2.12 | 2.01 | 2.16 | 2.65 | 2.40 | 3.37 | 3.67 | 1.35 | |||||||||||||
SKEW | -0.60 | 0.01 | -0.35 | -0.50 | -0.21 | 0.30 | 0.26 | -0.02 | -0.03 | -0.38 | -0.48 | -0.38 | -0.08 | |||||||||||||
MAX | 23.23 | 23.81 | 27.61 | 34.59 | 42.52 | 53.41 | 58.77 | 56.76 | 49.28 | 38.26 | 27.97 | 22.03 | 34.72 | |||||||||||||
MIN | 0.37 | 8.96 | 11.58 | 22.00 | 33.79 | 42.67 | 49.52 | 47.55 | 37.81 | 26.59 | 11.52 | 6.11 | 29.21 | |||||||||||||
YRS | 57 | 56 | 56 | 56 | 56 | 55 | 54 | 54 | 55 | 54 | 54 | 55 | 49 |