YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | 22.35 | 30.57 | 29.19 | 39.30 | 42.13 | 51.34 | a | 56.26 | 54.97 | a | 38.93 | 35.87 | 32.23 | 21.13 | 37.86 | |||||||||||
1927 | 21.81 | 29.22 | a | 27.71 | 32.41 | a | 40.87 | a | 49.47 | 53.63 | a | 51.90 | 42.57 | b | 36.74 | 35.10 | a | 16.57 | a | 36.50 | ||||||
1928 | 20.90 | 23.34 | 31.90 | 33.20 | 46.61 | 46.57 | 54.52 | 49.35 | 42.23 | 35.71 | 28.90 | 13.52 | 35.56 | |||||||||||||
1929 | 8.83 | h | 12.63 | a | 30.19 | 32.87 | 39.32 | 47.30 | 53.97 | 55.37 | a | 38.57 | g | 33.48 | 17.87 | 24.32 | 34.73 | b | ||||||||
1930 | 4.39 | 29.89 | 29.77 | 39.37 | 41.48 | 46.07 | 55.39 | 56.61 | 45.43 | 34.39 | 22.30 | 11.37 | a | 34.70 | ||||||||||||
1931 | 20.73 | a | 25.00 | 30.42 | 34.50 | 43.70 | a | 50.77 | 57.97 | 54.81 | 46.47 | 36.61 | 23.03 | a | 18.45 | 36.87 | ||||||||||
1932 | 17.27 | a | 20.00 | 31.55 | 37.37 | 44.65 | 50.83 | 53.77 | 49.71 | 42.53 | 35.03 | 30.07 | 12.16 | 35.41 | ||||||||||||
1933 | 21.23 | 10.52 | a | 28.94 | 33.80 | 40.13 | 51.83 | 55.10 | 52.39 | 42.13 | 36.29 | 26.87 | 31.94 | 35.93 | ||||||||||||
1934 | 30.32 | 32.00 | 34.16 | 40.40 | 46.94 | 48.53 | 56.72 | b | 53.35 | 42.63 | 38.81 | 35.07 | 26.16 | 40.42 | ||||||||||||
1935 | 21.65 | 24.64 | 28.80 | a | 36.93 | 40.61 | 48.57 | 53.65 | 51.10 | 45.23 | 34.52 | 24.27 | 21.42 | 35.95 | ||||||||||||
1936 | 24.03 | 18.86 | 29.74 | 39.50 | 45.03 | 52.10 | 57.16 | 55.00 | 41.73 | 35.61 | 18.43 | 23.97 | 36.76 | |||||||||||||
1937 | 3.13 | 22.11 | 31.81 | 35.67 | 43.13 | 47.90 | 57.39 | 51.00 | 46.43 | 38.16 | 33.80 | 27.81 | 36.53 | |||||||||||||
1938 | 26.65 | 30.93 | 31.71 | 36.90 | 42.13 | 50.77 | 57.65 | 52.94 | 50.47 | 40.29 | 24.27 | 24.39 | 39.09 | |||||||||||||
1939 | 25.55 | 22.86 | 30.13 | 36.63 | 44.55 | 46.73 | 56.74 | 54.39 | 46.60 | 38.45 | 24.30 | 29.45 | 38.03 | |||||||||||||
1940 | 25.74 | 31.69 | 33.06 | 37.93 | 45.03 | 52.03 | 56.87 | 54.68 | 51.23 | 40.94 | 27.63 | 25.87 | 40.23 | |||||||||||||
1941 | 25.55 | 30.25 | 30.68 | 35.83 | 45.48 | 50.07 | 56.35 | 55.00 | 42.67 | 38.48 | 30.97 | 28.16 | 39.12 | |||||||||||||
1942 | 13.35 | 23.46 | 26.90 | 37.50 | 41.26 | 45.60 | 55.26 | 51.97 | 43.37 | 37.23 | 29.69 | a | 28.71 | 36.19 | ||||||||||||
1943 | 22.26 | 25.71 | 29.29 | 40.30 | 39.58 | 46.63 | 53.32 | 50.87 | 45.67 | 40.97 | a | 28.37 | 23.23 | 37.18 | ||||||||||||
1944 | 13.71 | 27.28 | 25.97 | 37.70 | 42.45 | 47.97 | 52.42 | 49.58 | 45.43 | 39.90 | 31.30 | 23.23 | a | 36.41 | ||||||||||||
1945 | 25.71 | 30.25 | 30.19 | 33.03 | 43.39 | 46.83 | 54.19 | 52.71 | 42.60 | 38.71 | 31.30 | 24.19 | 37.76 | |||||||||||||
1946 | 20.87 | 24.50 | 32.81 | 37.30 | 42.23 | 48.83 | 54.33 | a | 52.90 | 42.57 | 33.03 | 29.07 | 27.57 | a | 37.17 | |||||||||||
1947 | 13.17 | a | 27.36 | 31.32 | 35.93 | 46.52 | 47.97 | 54.61 | 51.48 | 45.07 | 42.10 | 28.67 | 24.42 | 37.38 | ||||||||||||
1948 | 21.97 | 23.38 | 26.77 | a | 34.60 | ----- | z | 51.07 | a | 52.03 | 51.48 | 44.87 | 34.58 | 27.57 | 17.94 | 35.11 | a | |||||||||
1949 | 1.52 | 21.48 | a | 31.55 | 36.53 | 47.80 | a | 48.67 | 54.26 | 53.90 | ----- | z | ----- | z | ----- | z | ----- | z | 36.96 | d | ||||||
1950 | 18.26 | 24.68 | 29.55 | 33.37 | 36.77 | 45.57 | 51.57 | c | 49.75 | c | 45.87 | 38.97 | 31.90 | 30.16 | 36.37 | |||||||||||
1951 | 22.03 | 27.82 | 25.61 | 32.93 | a | 41.39 | 44.30 | 53.10 | 50.60 | a | 41.27 | 36.00 | 27.66 | a | 21.82 | c | 35.38 | |||||||||
1952 | 18.19 | 22.21 | a | 26.72 | b | 36.07 | b | 41.61 | 47.07 | a | 51.77 | 49.68 | i | 42.23 | d | 34.42 | 19.41 | a | 26.52 | 33.29 | a | |||||
1953 | 33.76 | b | 25.81 | b | 29.16 | l | 32.60 | 38.23 | 43.73 | 50.60 | a | 50.12 | e | 43.60 | 35.97 | b | 33.33 | 24.43 | c | 37.47 | a | |||||
1954 | 27.80 | a | 28.08 | c | 25.60 | a | 33.96 | c | 39.97 | b | 45.70 | c | 52.33 | a | 47.53 | a | 41.30 | 31.19 | 29.86 | b | 20.23 | 35.30 | ||||
1955 | 15.63 | a | 19.50 | b | 26.32 | 32.55 | a | 39.29 | 47.00 | c | 51.13 | a | 49.52 | 41.54 | b | 35.36 | c | 24.17 | 27.90 | a | 34.16 | |||||
1956 | 25.61 | 17.00 | 29.07 | b | 34.40 | 44.00 | a | 46.11 | b | 52.96 | d | 45.75 | k | 40.07 | 35.83 | a | 24.17 | 22.63 | a | 33.80 | a | |||||
1957 | 10.81 | 25.04 | 31.27 | a | 35.75 | b | 44.19 | 47.89 | b | 50.29 | 46.38 | g | 42.34 | a | 34.50 | a | 23.17 | a | 26.61 | 33.81 | a | |||||
1958 | 23.13 | a | 31.96 | 27.97 | b | 33.70 | 44.94 | 49.79 | f | 52.29 | c | 54.32 | 42.27 | 33.25 | c | 26.46 | b | 27.23 | 36.14 | a | ||||||
1959 | 28.06 | 27.28 | c | 25.93 | a | 33.77 | 37.97 | a | 48.81 | d | 50.77 | 49.53 | l | 44.14 | a | 36.48 | 20.97 | 16.55 | 33.70 | a | ||||||
1960 | 14.21 | b | 24.52 | 30.19 | 33.77 | 38.79 | b | 46.21 | b | 55.17 | a | 47.93 | d | 44.57 | 34.42 | 29.96 | b | 19.42 | 34.93 | |||||||
1961 | 20.55 | 30.04 | 31.16 | 30.85 | d | 41.60 | a | 50.77 | d | 53.55 | 57.26 | 40.83 | 34.52 | 24.60 | 21.10 | 36.40 | ||||||||||
1962 | 10.00 | 24.32 | 26.26 | 34.93 | a | 42.07 | b | 46.11 | c | 50.25 | c | 50.43 | a | 43.47 | 37.10 | 30.30 | 26.68 | 35.16 | ||||||||
1963 | 13.19 | 30.36 | 29.45 | 34.37 | 44.58 | 48.97 | a | 49.68 | 53.58 | g | 51.45 | a | 42.06 | 33.17 | 21.03 | 36.21 | a | |||||||||
1964 | 19.04 | c | 18.37 | b | 27.39 | 30.90 | 38.53 | a | 48.50 | 52.67 | a | 48.37 | a | 41.17 | 35.32 | 28.17 | 26.87 | 34.61 | ||||||||
1965 | 26.65 | 25.61 | 20.42 | 38.80 | 39.68 | 46.73 | 52.26 | 51.72 | b | 39.60 | 37.13 | 33.03 | 21.32 | 36.08 | ||||||||||||
1966 | 24.13 | a | 23.11 | 28.65 | 31.55 | a | 41.77 | a | 46.17 | 50.07 | a | 51.76 | b | 47.10 | 32.52 | 33.47 | 24.55 | 36.24 | ||||||||
1967 | 28.32 | 25.79 | 28.50 | a | 31.63 | 37.97 | 48.80 | 56.52 | 53.29 | 49.04 | d | 35.29 | 29.67 | 20.19 | 37.08 | |||||||||||
1968 | 18.29 | 29.14 | 30.77 | 30.33 | 39.32 | c | 47.86 | a | 53.06 | 51.27 | a | 44.27 | 34.94 | 31.03 | 24.48 | 36.23 | ||||||||||
1969 | 23.16 | 25.93 | 24.13 | 34.57 | 42.38 | b | 49.52 | a | 51.50 | a | 48.77 | 45.67 | 31.29 | 25.10 | 25.20 | a | 35.60 | |||||||||
1970 | 28.77 | 25.15 | b | 27.97 | a | 29.83 | 39.64 | c | 50.69 | a | 53.60 | a | 50.39 | 38.97 | 32.03 | 31.53 | 24.39 | 36.08 | ||||||||
1971 | 25.52 | 23.96 | 26.35 | 32.60 | 43.07 | c | 47.30 | 52.48 | 55.00 | 39.57 | 33.81 | 28.04 | e | 21.00 | 35.73 | |||||||||||
1972 | 20.74 | 25.48 | 30.65 | 32.43 | 41.84 | 49.57 | 50.55 | 52.10 | 41.03 | 36.58 | 30.27 | 14.61 | 35.49 | |||||||||||||
1973 | 22.10 | 26.68 | 29.03 | 32.77 | 40.97 | 47.47 | 52.70 | a | 51.61 | 43.77 | 35.52 | 32.47 | 28.57 | a | 36.97 | |||||||||||
1974 | 19.35 | 26.89 | 30.27 | a | 32.87 | 38.03 | a | 49.03 | 52.35 | 48.76 | b | 41.31 | a | 35.61 | 29.57 | 24.10 | 35.68 | |||||||||
1975 | 18.77 | 26.93 | 28.65 | 31.23 | 38.97 | 46.63 | 57.74 | 49.33 | a | 42.31 | a | 38.84 | 26.83 | 25.58 | 35.99 | |||||||||||
1976 | 24.10 | 23.59 | 24.19 | 31.67 | 40.45 | 44.80 | 53.55 | 49.84 | 46.00 | 32.00 | a | 25.27 | 14.59 | b | 34.17 | |||||||||||
1977 | 11.52 | 20.52 | a | 25.39 | 34.69 | a | 39.06 | 52.53 | 51.86 | b | 54.21 | b | 43.76 | a | 34.42 | 28.00 | 28.42 | 35.36 | ||||||||
1978 | 27.94 | 29.50 | 32.81 | 36.37 | 39.13 | a | 45.60 | 52.74 | 49.42 | 44.50 | 32.74 | 23.53 | 16.35 | 35.89 | ||||||||||||
1979 | 5.29 | 25.39 | 29.74 | 33.40 | 42.48 | 47.27 | 51.55 | 53.17 | a | 45.60 | 38.94 | 23.33 | 26.32 | 35.21 | ||||||||||||
1980 | 23.77 | 31.10 | 30.19 | 38.83 | 44.87 | a | 46.53 | 53.16 | 47.97 | 45.17 | 34.13 | 26.93 | 24.29 | 37.25 | ||||||||||||
1981 | 26.32 | 24.64 | 29.86 | c | 35.86 | a | 42.50 | a | 47.83 | 49.42 | 51.16 | 44.37 | 32.71 | g | 32.87 | 26.94 | 37.43 | a | ||||||||
1982 | 16.00 | 21.14 | 30.60 | a | 31.57 | 40.93 | b | 50.03 | 52.52 | 51.87 | 43.62 | a | 38.00 | 25.57 | 23.50 | a | 35.45 | |||||||||
1983 | 26.19 | 31.25 | 35.90 | 32.52 | a | 42.52 | 48.31 | a | 51.52 | 55.74 | 42.53 | 36.84 | 34.39 | b | 17.93 | a | 37.97 | |||||||||
1984 | 15.39 | 22.59 | 32.77 | 35.63 | c | 41.73 | a | 46.63 | 53.77 | 55.73 | a | 41.59 | a | 34.87 | 31.83 | 14.13 | 35.56 | |||||||||
1985 | 9.87 | 18.25 | 25.65 | 35.13 | 42.37 | a | 49.63 | 56.61 | 48.03 | b | 40.32 | b | 32.84 | 18.21 | a | 0.90 | a | 31.48 | ||||||||
1986 | 19.16 | 32.18 | 35.30 | a | 32.28 | e | 40.63 | a | 51.14 | b | 49.29 | 52.81 | 42.80 | 34.48 | 29.53 | 17.42 | 36.42 | |||||||||
1987 | 17.77 | 26.43 | 31.52 | 35.53 | 43.86 | i | 51.78 | c | 51.23 | 47.03 | 41.55 | a | 32.28 | b | 30.00 | a | 23.45 | 35.32 | a | |||||||
1988 | 15.81 | 24.14 | 28.46 | c | 35.43 | 40.10 | 52.17 | 52.29 | 48.45 | 40.54 | b | 38.79 | b | 30.60 | 19.13 | 35.49 | ||||||||||
1989 | 12.87 | 12.65 | b | 32.30 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.27 | i | |
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 | 46.26 | 54.17 | 53.61 | 55.77 | 46.07 | 40.07 | a | 28.29 | b | 22.16 | 43.30 | d | ||||||
1993 | 18.63 | a | 21.80 | c | 34.61 | 38.00 | 47.94 | 48.66 | a | 44.19 | 40.46 | c | 43.83 | 38.03 | 21.07 | 24.84 | 35.17 | |||||||||
1994 | 26.57 | a | 25.04 | 33.00 | a | 39.93 | 43.17 | b | 42.79 | a | 42.60 | f | 49.58 | e | 46.67 | 35.60 | f | 24.00 | b | 23.21 | g | 36.75 | c | |||
1995 | 29.13 | 30.21 | 33.00 | b | 36.60 | 45.52 | 49.37 | 55.66 | b | 43.64 | c | 31.85 | j | 33.89 | c | 34.04 | b | 26.45 | 37.95 | a | ||||||
1996 | 25.52 | 25.52 | 32.65 | 35.61 | b | 37.50 | a | 45.57 | b | 57.53 | a | ----- | z | 41.63 | c | 32.88 | n | 30.26 | c | 28.07 | c | 35.99 | b | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.18 | 25.08 | 29.56 | 34.88 | 41.97 | 48.30 | 53.36 | 51.49 | 43.63 | 36.05 | 28.02 | 22.64 | 36.27 | |||||||||||||
S.D. | 6.82 | 4.67 | 2.90 | 2.64 | 2.69 | 2.34 | 2.54 | 3.07 | 2.72 | 2.64 | 4.31 | 5.39 | 1.51 | |||||||||||||
SKEW | -0.73 | -0.85 | -0.37 | 0.27 | 0.28 | 0.17 | -0.40 | -0.74 | 0.79 | 0.35 | -0.50 | -1.27 | 0.31 | |||||||||||||
MAX | 33.76 | 32.18 | 35.90 | 40.40 | 47.94 | 54.17 | 57.97 | 57.26 | 51.45 | 42.10 | 35.10 | 31.94 | 40.42 | |||||||||||||
MIN | 1.52 | 10.52 | 20.42 | 29.83 | 36.77 | 42.79 | 44.19 | 40.46 | 38.93 | 31.19 | 17.87 | 0.90 | 31.48 | |||||||||||||
YRS | 67 | 68 | 67 | 67 | 66 | 67 | 67 | 62 | 65 | 64 | 67 | 66 | 52 |