YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | 22.22 | a | 32.38 | 42.79 | 53.29 | a | 60.71 | b | 58.18 | 45.25 | 40.10 | a | 29.62 | 13.22 | a | 39.78 | b | |||||
1913 | 15.64 | b | 13.64 | c | 18.82 | 35.72 | a | 41.00 | e | 54.67 | 59.94 | 62.35 | 48.97 | 34.45 | b | 30.48 | a | 17.35 | a | 36.09 | ||||||
1914 | 21.68 | c | 15.07 | a | 26.79 | 43.43 | 44.84 | 52.93 | 59.06 | 56.24 | 50.00 | 37.89 | 31.40 | 13.88 | b | 37.77 | ||||||||||
1915 | 15.52 | 21.87 | a | 20.98 | b | 36.31 | c | 43.48 | 49.53 | a | 55.89 | 55.29 | 51.83 | 44.85 | 31.25 | d | 18.00 | 37.07 | ||||||||
1916 | 15.77 | a | 20.09 | a | 25.94 | 33.72 | c | 42.08 | 53.22 | 59.83 | a | 56.55 | a | 45.91 | a | 36.40 | a | 27.83 | a | 12.78 | b | 35.84 | ||||
1917 | 13.92 | r | ----- | z | ----- | z | 37.75 | j | 42.52 | b | 52.13 | 60.48 | a | 54.68 | 49.48 | 38.43 | a | 31.13 | c | 27.31 | b | 44.52 | d | |||
1918 | ----- | z | 25.10 | b | 32.28 | b | 29.26 | a | 42.57 | a | 56.21 | b | 59.02 | 58.06 | 51.90 | 44.55 | k | 11.96 | p | 11.82 | a | 40.69 | c | |||
1919 | 19.13 | 20.69 | a | 27.05 | b | 38.04 | b | 48.28 | a | 56.83 | 63.32 | 60.95 | 55.20 | 33.42 | 26.58 | 21.71 | b | 39.27 | ||||||||
1920 | 25.38 | a | 21.64 | d | 23.32 | 28.43 | 48.90 | u | 53.08 | 59.24 | 54.21 | 47.73 | 39.02 | 26.92 | 16.61 | 35.96 | a | |||||||||
1921 | 20.24 | 30.16 | c | 40.31 | d | 35.89 | b | 42.08 | 55.40 | a | 58.37 | 55.98 | 50.13 | 44.69 | 31.38 | 25.73 | 40.86 | |||||||||
1922 | 12.81 | b | 18.41 | 23.85 | a | 35.37 | 43.08 | 57.55 | 59.42 | 59.82 | 51.35 | 37.72 | a | 23.55 | 18.57 | a | 36.79 | |||||||||
1923 | 21.60 | 17.34 | 16.38 | a | 30.82 | b | 43.90 | 51.08 | 58.48 | 55.70 | a | 46.33 | 33.28 | a | 27.23 | 15.47 | a | 34.80 | ||||||||
1924 | 12.48 | 22.55 | 15.95 | 32.12 | 41.89 | 54.21 | a | 57.24 | 56.21 | 46.37 | 38.76 | 26.50 | 14.58 | 34.90 | ||||||||||||
1925 | 15.05 | a | 22.09 | 27.26 | 38.23 | b | 46.17 | b | 50.95 | a | 58.40 | 53.67 | a | 48.25 | 36.60 | 26.88 | b | 17.94 | 36.79 | |||||||
1926 | 13.73 | 22.62 | 22.58 | 36.60 | 44.15 | 52.32 | 56.48 | a | 56.32 | 47.10 | a | 39.81 | 27.07 | 15.97 | 36.23 | |||||||||||
1927 | 21.77 | a | 20.43 | a | 21.81 | 32.97 | a | 42.81 | 50.38 | 57.13 | 51.65 | 47.48 | 39.58 | 34.84 | b | 19.85 | a | 36.72 | ||||||||
1928 | 23.19 | 18.84 | a | 27.64 | b | 30.58 | 46.86 | b | 47.38 | a | 55.72 | a | 53.74 | 48.95 | 39.06 | 25.17 | 13.50 | 35.89 | ||||||||
1929 | 18.11 | d | 12.94 | d | 21.81 | b | 31.71 | b | 42.58 | a | 51.76 | e | 58.62 | w | 57.68 | 46.67 | a | 37.31 | 18.10 | ----- | z | 33.87 | b | |||
1930 | 7.78 | a | 24.18 | 22.57 | a | 40.15 | 39.11 | 52.22 | 59.06 | 57.21 | 49.93 | 37.10 | a | 25.15 | 11.95 | 35.53 | ||||||||||
1931 | 18.00 | 21.52 | 20.23 | 37.52 | g | 41.87 | a | 55.27 | 59.31 | 54.56 | 49.32 | 41.60 | a | 24.83 | 15.54 | e | 36.55 | a | ||||||||
1932 | 9.88 | b | 19.55 | 25.65 | a | 40.19 | a | 45.47 | 50.60 | 59.56 | 56.15 | 50.00 | 36.13 | a | 28.52 | 12.77 | a | 36.21 | ||||||||
1933 | 18.72 | a | 10.98 | 27.75 | a | 30.33 | a | 38.88 | b | 55.58 | 60.31 | 56.25 | c | 51.70 | 43.15 | 33.05 | 27.73 | 37.87 | ||||||||
1934 | 19.37 | 28.02 | 33.55 | 40.47 | a | 52.00 | a | 53.34 | a | 61.10 | 59.93 | j | 47.28 | a | 42.90 | a | 27.24 | a | 17.98 | 38.48 | a | |||||
1935 | 22.90 | j | 19.85 | a | 24.59 | b | 32.45 | ----- | z | 51.50 | 59.19 | 58.66 | 50.83 | 39.28 | a | 25.11 | b | 18.89 | 38.04 | b | ||||||
1936 | 16.81 | 18.60 | 24.89 | 34.19 | a | 45.63 | a | 55.90 | 60.02 | 57.50 | 46.93 | 36.34 | 27.08 | ----- | z | 38.54 | a | |||||||||
1937 | 7.85 | 21.23 | 27.18 | 34.60 | 45.21 | 51.42 | 60.19 | b | 59.75 | a | 51.88 | 41.50 | a | 28.11 | b | 22.36 | b | 37.61 | ||||||||
1938 | 19.06 | 19.34 | 26.85 | d | 36.00 | b | 44.15 | a | 54.33 | 58.32 | 58.98 | 51.95 | b | 41.18 | a | 18.07 | 19.84 | b | 37.34 | |||||||
1939 | 17.36 | c | 13.96 | 29.58 | 39.52 | a | 47.39 | 50.12 | 59.23 | 57.52 | 52.75 | 41.53 | a | 31.90 | 28.37 | d | 39.10 | |||||||||
1940 | 20.61 | d | 24.04 | b | 31.26 | b | 36.96 | c | 49.50 | w | 55.18 | 61.92 | 57.90 | 51.83 | 42.19 | 21.92 | 23.61 | 38.86 | a | |||||||
1941 | 19.43 | a | 23.67 | a | 28.15 | a | 34.91 | b | 47.30 | c | 50.76 | i | 58.98 | 56.13 | 47.38 | 39.18 | 28.22 | a | 24.42 | 37.07 | a | |||||
1942 | 15.82 | 13.55 | 20.58 | 37.12 | 40.83 | a | 51.13 | 57.84 | 57.56 | ----- | z | 40.18 | a | 26.48 | a | 21.45 | b | 34.78 | a | |||||||
1943 | 15.05 | a | 23.13 | b | 25.50 | a | 41.60 | 40.50 | a | 50.15 | 59.06 | 57.61 | 50.53 | 41.28 | b | 27.05 | 18.74 | 37.52 | ||||||||
1944 | 12.33 | a | 20.78 | 23.98 | 30.21 | a | 43.68 | 51.97 | 56.76 | 57.55 | 48.03 | ----- | z | ----- | z | ----- | z | 38.36 | c | |||||||
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.40 | 58.11 | 57.11 | 48.57 | 41.26 | ----- | z | ----- | z | 50.69 | g | |||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.85 | 60.00 | 56.97 | 49.95 | 31.62 | c | 28.83 | a | 24.73 | 43.71 | e | |||||
1947 | 16.91 | d | 22.00 | 25.87 | 34.02 | 48.11 | 49.88 | 60.00 | 58.48 | 52.28 | 43.69 | 22.40 | a | 18.15 | a | 37.65 | ||||||||||
1948 | 15.95 | b | 17.17 | 19.53 | a | 36.00 | 46.22 | a | 54.82 | 58.53 | 58.08 | 54.25 | 39.15 | a | 21.76 | a | 18.23 | 36.64 | ||||||||
1949 | 8.34 | 16.61 | a | 28.76 | 37.80 | 45.15 | 52.31 | a | 59.74 | 57.82 | 50.29 | i | 37.50 | b | 36.17 | 18.00 | a | 36.20 | a | |||||||
1950 | 17.06 | 22.93 | 25.06 | 35.23 | 42.10 | 52.12 | 55.60 | 53.85 | 49.98 | 49.08 | 26.45 | 26.37 | 37.99 | |||||||||||||
1951 | 17.53 | b | 17.31 | g | 23.48 | 34.38 | 46.90 | 46.88 | 60.45 | 57.39 | 50.42 | 40.68 | 23.95 | 17.19 | 38.11 | a | ||||||||||
1952 | 15.84 | 16.74 | 19.40 | a | 34.77 | 46.56 | 55.90 | e | 60.24 | 55.89 | 48.76 | g | 41.53 | 32.03 | l | 7.17 | v | 38.54 | c | |||||||
1953 | 25.69 | 14.83 | e | 30.39 | h | 31.32 | 45.55 | 55.30 | 61.44 | 55.82 | 52.58 | 42.92 | 30.88 | 17.82 | 39.47 | a | ||||||||||
1954 | 24.10 | 27.62 | b | 24.93 | a | 41.00 | 46.90 | 52.62 | 62.73 | 56.61 | 53.60 | 40.59 | c | 31.33 | 18.81 | e | 40.07 | |||||||||
1955 | 17.61 | ----- | z | 23.85 | a | 32.63 | c | ----- | z | ----- | z | 58.88 | a | 57.11 | 50.20 | 40.67 | b | 24.72 | a | 25.13 | 36.76 | c | ||||
1956 | 23.19 | 11.91 | 23.40 | 34.43 | a | 48.16 | 57.63 | 57.83 | a | 54.88 | c | 52.15 | 41.71 | 22.62 | 21.84 | b | 37.48 | |||||||||
1957 | 17.17 | a | 25.16 | 25.73 | 31.78 | 43.87 | 49.90 | 59.89 | 57.44 | 48.77 | ----- | z | ----- | z | ----- | z | 39.97 | c | ||||||||
1958 | 16.10 | 26.61 | 23.67 | b | 31.18 | 49.18 | 54.72 | ----- | z | ----- | z | 49.52 | f | 37.79 | ----- | z | ----- | z | 34.18 | e | ||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | 44.69 | d | 52.68 | 56.66 | 57.13 | a | 52.87 | 39.26 | b | 27.97 | a | 15.11 | 43.30 | d | ||||
1961 | 15.27 | a | 18.52 | 24.66 | 30.88 | 44.77 | 53.67 | 57.32 | 57.66 | b | 42.93 | 38.28 | a | 23.12 | d | 15.12 | b | 35.18 | ||||||||
1962 | 11.00 | b | 23.11 | 20.20 | a | 37.20 | 45.00 | a | 51.62 | a | 56.45 | a | 55.97 | a | 49.90 | a | 41.32 | a | 30.82 | 20.31 | 36.91 | |||||
1963 | 11.07 | b | 23.28 | a | 23.55 | 35.60 | 46.73 | 52.19 | a | 59.11 | 57.08 | 52.87 | 45.55 | 32.13 | 19.32 | a | 38.21 | |||||||||
1964 | 14.33 | a | 10.71 | 18.19 | b | 31.36 | b | 44.23 | 51.25 | 59.31 | 53.66 | 46.92 | 38.57 | b | 25.55 | 17.05 | 34.26 | |||||||||
1965 | 20.67 | a | 16.73 | 14.45 | 35.08 | 42.90 | a | 50.71 | a | 57.22 | a | 53.83 | a | 43.95 | 42.47 | 31.68 | 22.17 | a | 35.99 | |||||||
1966 | 14.50 | 14.34 | 27.35 | a | 34.93 | 45.69 | 52.20 | 60.71 | 55.69 | 50.47 | a | 37.87 | 31.53 | 16.39 | 36.81 | |||||||||||
1967 | 20.05 | 18.30 | 29.82 | a | 34.82 | 41.63 | a | 49.75 | 57.55 | 55.19 | 49.05 | 40.98 | a | 27.73 | b | 14.26 | 36.59 | |||||||||
1968 | 17.98 | a | 20.86 | 24.63 | a | 29.43 | 40.39 | 52.74 | a | 57.13 | 53.90 | 45.93 | a | 39.57 | b | 21.55 | a | 18.02 | 35.18 | |||||||
1969 | 23.32 | 19.50 | b | 15.95 | c | 37.93 | a | 47.52 | 48.09 | a | 58.53 | a | 58.42 | 51.41 | b | 31.02 | 24.92 | 19.07 | a | 36.31 | ||||||
1970 | 17.93 | a | 22.19 | a | 22.47 | a | 28.86 | a | 43.27 | 50.19 | a | 57.06 | 58.32 | 46.96 | c | 32.53 | b | 27.05 | a | 20.02 | 35.57 | |||||
1971 | 20.26 | 16.46 | b | 24.27 | 34.26 | a | 41.29 | 51.98 | 55.77 | a | 56.79 | 44.74 | a | 38.58 | a | 26.32 | b | 15.73 | a | 35.54 | ||||||
1972 | 17.66 | 22.72 | 32.97 | b | 36.22 | a | 42.47 | a | 53.24 | a | 56.20 | a | 55.52 | 49.48 | 40.55 | a | 21.15 | c | 16.32 | a | 37.04 | |||||
1973 | 13.77 | 15.16 | 22.67 | a | 29.02 | 42.29 | 51.43 | a | 56.07 | a | 57.13 | a | 48.88 | 40.50 | a | 28.57 | 17.81 | b | 35.27 | |||||||
1974 | 14.92 | a | 17.56 | a | 31.53 | 32.57 | a | 46.82 | c | 53.30 | 57.92 | 53.16 | 45.95 | b | 40.43 | b | 25.82 | b | 15.06 | 36.25 | ||||||
1975 | 16.03 | a | 16.65 | a | 24.60 | a | 28.83 | 41.32 | 49.22 | a | 56.26 | 53.60 | a | 46.23 | 38.69 | b | 24.05 | a | 19.24 | f | 35.95 | a | ||||
1976 | 15.82 | a | 24.40 | 21.37 | 35.07 | 43.08 | a | 50.10 | a | 57.69 | 53.90 | 47.23 | b | 34.42 | 23.83 | 17.97 | a | 35.41 | ||||||||
1977 | 17.92 | a | 20.19 | a | 20.89 | 36.42 | 44.68 | 55.10 | 58.05 | 54.34 | b | 48.05 | 37.57 | a | 27.26 | c | 22.13 | 36.88 | ||||||||
1978 | 19.53 | 20.75 | 29.63 | 36.14 | a | 41.70 | a | 50.78 | 55.82 | 53.02 | 46.20 | 37.23 | 23.86 | a | 9.72 | a | 35.36 | |||||||||
1979 | 6.98 | 17.91 | 22.90 | 31.33 | 40.27 | 49.57 | a | 56.08 | 54.21 | 50.08 | 39.24 | 15.12 | a | 19.12 | a | 33.57 | ||||||||||
1980 | 17.85 | 21.78 | 21.13 | 29.37 | 42.39 | 52.87 | 58.74 | 54.97 | 48.91 | b | 36.11 | 27.47 | a | 29.57 | b | 36.76 | ||||||||||
1981 | 22.53 | 22.48 | a | 26.88 | b | 39.43 | b | 41.69 | 53.82 | 57.12 | a | 54.61 | 53.03 | 37.14 | c | 29.98 | a | 21.12 | b | 38.32 | ||||||
1982 | 17.75 | c | 17.62 | 26.50 | c | 31.14 | b | 41.45 | a | 49.40 | a | 56.42 | a | 58.60 | 49.24 | a | 36.18 | 22.97 | 17.96 | c | 35.44 | |||||
1983 | 21.61 | 21.98 | b | 27.10 | a | 25.84 | b | 39.42 | 50.31 | a | 58.42 | 60.18 | a | 51.35 | 40.98 | b | 27.72 | a | 16.28 | b | 36.77 | |||||
1984 | 15.28 | b | 18.05 | 24.83 | a | 28.90 | a | 45.40 | 50.62 | 59.25 | a | 57.28 | b | 49.53 | 34.26 | 26.50 | 20.21 | 35.84 | ||||||||
1985 | 13.15 | 14.54 | a | 26.34 | 36.43 | b | 45.42 | 51.44 | d | 58.60 | 55.57 | a | 46.30 | 38.31 | 24.02 | a | 19.60 | a | 35.81 | |||||||
1986 | 23.16 | 22.79 | 31.52 | 36.63 | 43.06 | 54.70 | b | 56.74 | 56.74 | 47.33 | a | 37.27 | 26.24 | a | 18.10 | a | 37.86 | |||||||||
1987 | 17.27 | a | 20.50 | a | 23.94 | 37.97 | a | 46.02 | b | 52.55 | a | 57.05 | a | 54.45 | a | 47.23 | 41.35 | 25.05 | 16.27 | 36.64 | ||||||
1988 | 14.39 | 18.48 | 21.52 | 35.40 | a | 44.37 | 57.00 | 58.66 | 56.94 | 47.77 | b | 43.13 | 25.43 | 16.65 | a | 36.64 | ||||||||||
1989 | 17.05 | a | 14.56 | a | 30.98 | 39.10 | 45.89 | 50.23 | 58.65 | a | 54.45 | 48.86 | a | 38.82 | f | 28.95 | 17.35 | 36.92 | a | |||||||
1990 | 20.10 | 18.73 | 28.55 | 38.62 | 43.35 | 54.30 | 56.55 | 55.50 | 52.55 | 40.06 | 29.43 | a | 14.60 | 37.69 | ||||||||||||
1991 | 15.85 | 23.89 | 25.92 | 32.00 | 45.63 | 52.90 | 56.60 | 58.15 | 49.33 | 39.63 | 23.69 | a | 17.84 | 36.79 | ||||||||||||
1992 | 16.92 | 21.95 | 29.84 | 41.00 | 47.10 | 51.22 | a | 54.89 | 54.95 | 50.50 | 41.55 | a | 19.42 | 16.89 | 37.18 | |||||||||||
1993 | 18.61 | 17.25 | 25.90 | 32.92 | 44.97 | a | 50.69 | a | 53.95 | 54.39 | 47.55 | a | 36.60 | 21.32 | 18.66 | 35.23 | ||||||||||
1994 | 18.92 | 19.38 | 28.31 | 37.02 | 46.95 | 55.70 | 58.35 | 59.05 | 51.42 | e | 37.98 | 25.42 | 22.35 | a | 38.40 | |||||||||||
1995 | 18.21 | 27.09 | 28.97 | 34.07 | 40.77 | 49.80 | 55.84 | 59.40 | 49.30 | 38.92 | a | 31.48 | 20.37 | 37.85 | ||||||||||||
1996 | 16.84 | 20.88 | 24.76 | 34.78 | 46.55 | 52.57 | 58.37 | 56.32 | 48.15 | 38.02 | 28.78 | a | 20.40 | 37.20 | ||||||||||||
1997 | 17.68 | 14.54 | b | 30.03 | 29.60 | a | 44.82 | 53.48 | 56.73 | 57.26 | 52.25 | 38.52 | a | 24.90 | 16.90 | a | 36.39 | |||||||||
1998 | 20.52 | 19.32 | 23.53 | 32.59 | a | 45.69 | 49.18 | 60.10 | 56.84 | 53.80 | 39.87 | 31.82 | 19.48 | a | 37.73 | |||||||||||
1999 | 21.32 | 23.84 | 31.16 | 33.38 | 42.84 | 51.36 | a | 59.35 | 57.10 | a | 47.12 | b | 41.67 | a | 34.21 | a | 18.07 | a | 38.45 | |||||||
2000 | 20.97 | 24.41 | 26.55 | 39.65 | 48.08 | 55.09 | b | 62.07 | a | 62.03 | a | 51.97 | a | 41.10 | a | 18.78 | 17.16 | 38.99 | ||||||||
2001 | 14.03 | a | 20.82 | 28.44 | d | 38.30 | b | 47.48 | b | 55.63 | c | 62.82 | c | 60.76 | b | 52.94 | d | 42.65 | d | 30.63 | d | 18.46 | c | 39.42 | ||
2002 | 16.96 | r | 15.93 | a | 22.76 | b | 40.77 | b | 45.82 | 57.44 | c | 64.15 | 59.57 | d | 52.21 | d | 38.64 | b | 23.15 | f | 21.11 | c | 41.84 | b | ||
2003 | 25.50 | a | 12.75 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.50 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.35 | 19.85 | 25.16 | 34.66 | 44.26 | 52.48 | 58.52 | 56.61 | 49.43 | 39.28 | 26.77 | 18.66 | 36.84 | |||||||||||||
S.D. | 4.00 | 4.02 | 4.34 | 3.67 | 2.55 | 2.42 | 1.96 | 2.08 | 2.55 | 3.07 | 4.01 | 3.89 | 1.39 | |||||||||||||
SKEW | -0.32 | -0.06 | 0.23 | 0.04 | 0.16 | 0.14 | 0.38 | 0.30 | -0.08 | -0.11 | -0.27 | 0.60 | 0.40 | |||||||||||||
MAX | 25.69 | 30.16 | 40.31 | 43.43 | 52.00 | 57.63 | 64.15 | 62.35 | 55.20 | 49.08 | 36.17 | 29.57 | 40.86 | |||||||||||||
MIN | 6.98 | 10.71 | 14.45 | 25.84 | 38.88 | 46.88 | 53.95 | 51.65 | 42.93 | 31.02 | 15.12 | 9.72 | 33.57 | |||||||||||||
YRS | 83 | 83 | 85 | 85 | 84 | 88 | 88 | 88 | 86 | 86 | 83 | 82 | 64 |