YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | 1.45 | 0.18 | 2.35 | 1.21 | 0.90 | 0.29 | 2.06 | 0.30 | 8.74 | d | ||||||||
1906 | 1.23 | 0.31 | 1.40 | s | 1.50 | 1.77 | 0.29 | 1.83 | 2.07 | 2.66 | 2.13 | 0.71 | 0.68 | 15.18 | a | |||||||||||
1907 | 1.44 | 0.88 | 0.45 | 1.32 | 1.48 | 1.33 | 1.40 | 3.11 | 0.88 | 1.20 | 0.30 | 1.27 | 15.06 | |||||||||||||
1908 | 0.10 | 1.00 | 1.69 | 0.99 | 0.35 | 0.37 | 1.96 | 2.51 | 1.01 | 1.21 | 0.43 | 1.08 | 12.70 | |||||||||||||
1909 | 2.13 | 1.40 | 0.35 | 2.35 | 0.59 | 0.04 | 2.30 | 2.70 | 1.76 | 1.07 | 0.95 | 1.19 | 16.83 | |||||||||||||
1910 | 0.72 | 1.11 | 1.05 | 1.51 | 0.73 | 0.43 | 1.24 | 2.73 | 0.79 | 2.43 | 0.57 | 1.05 | 14.36 | |||||||||||||
1911 | 0.95 | 1.45 | 1.12 | 1.37 | 0.72 | 1.16 | 3.01 | 2.06 | 1.18 | 1.94 | 1.37 | 0.72 | 17.05 | |||||||||||||
1912 | 0.53 | 0.79 | 1.51 | 0.84 | 0.44 | 2.69 | 2.45 | 1.44 | 0.84 | 1.65 | 0.18 | 0.60 | 13.96 | |||||||||||||
1913 | 0.45 | 0.26 | 0.69 | 0.36 | 0.44 | 2.42 | 2.82 | 3.35 | 1.79 | 0.66 | 0.32 | 1.84 | 15.40 | |||||||||||||
1914 | 1.67 | 1.00 | 0.84 | 0.85 | 2.06 | 1.34 | 3.68 | 2.85 | 0.56 | 1.45 | 0.00 | 0.87 | 17.17 | |||||||||||||
1915 | 0.45 | 0.73 | 0.16 | ----- | z | ----- | z | 0.88 | 0.80 | 0.12 | ----- | z | ----- | z | ----- | z | ----- | z | 3.14 | f | ||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 3.66 | 2.93 | p | ----- | z | ----- | z | ----- | z | ----- | z | 3.66 | j | ||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.48 | w | 0.11 | ----- | z | ----- | z | ----- | z | 0.11 | k | |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.44 | 4.28 | 2.47 | 2.20 | 1.34 | 0.81 | 12.54 | f | ||||||
1948 | 0.73 | 1.86 | 1.54 | a | 2.73 | 1.97 | 1.01 | 1.63 | 1.96 | 1.28 | 0.94 | 1.54 | 1.17 | 18.36 | ||||||||||||
1949 | 1.76 | 0.70 | 1.02 | 1.14 | 1.99 | 2.81 | 2.11 | 0.81 | a | 0.88 | 1.45 | 0.03 | 3.30 | 18.00 | ||||||||||||
1950 | 0.54 | 0.62 | 1.36 | 0.99 | 0.53 | 0.91 | 3.13 | 0.43 | 1.19 | 0.26 | 0.60 | 1.91 | 12.47 | |||||||||||||
1951 | 0.74 | 0.91 | 0.17 | 1.03 | 0.46 | 0.16 | 1.00 | 1.62 | 0.38 | f | 0.81 | b | 2.66 | 1.79 | 11.35 | a | ||||||||||
1952 | 1.63 | 0.63 | 1.25 | 1.58 | 1.83 | 0.25 | 1.99 | 3.10 | 1.67 | 0.00 | 0.92 | 0.53 | 15.38 | |||||||||||||
1953 | 0.63 | 0.22 | 1.23 | 1.29 | 1.30 | 0.99 | 3.05 | 1.89 | 0.53 | 2.01 | 1.26 | 0.40 | 14.80 | |||||||||||||
1954 | 0.00 | 0.52 | 0.66 | 0.06 | 1.21 | 0.21 | 5.07 | 0.85 | 0.89 | 1.19 | 0.62 | 0.71 | 11.99 | |||||||||||||
1955 | 0.61 | 0.70 | 0.75 | 0.58 | 1.77 | 0.33 | 1.17 | 2.13 | 0.22 | 0.35 | 0.52 | 0.83 | 9.96 | |||||||||||||
1956 | 1.30 | 0.93 | 0.64 | 1.16 | 0.86 | 0.51 | 1.05 | 0.99 | 0.00 | 1.46 | 0.65 | 1.28 | 10.83 | |||||||||||||
1957 | 2.09 | 0.57 | 1.36 | 1.93 | 1.91 | 1.84 | 4.22 | 2.69 | 0.03 | 2.09 | 2.63 | 0.82 | 22.18 | |||||||||||||
1958 | 0.92 | 1.81 | 0.75 | 1.45 | 0.80 | 0.23 | 0.27 | 1.50 | 0.84 | 1.07 | 0.79 | 1.11 | 11.54 | |||||||||||||
1959 | 0.58 | 1.16 | 1.41 | 1.23 | 0.84 | 0.35 | 0.45 | 2.14 | 1.84 | 3.64 | 0.84 | 0.46 | 14.94 | |||||||||||||
1960 | 1.81 | 1.65 | 1.98 | 0.66 | 0.74 | 0.52 | 1.05 | 0.18 | 1.01 | 1.60 | 0.84 | 0.87 | 12.91 | |||||||||||||
1961 | 0.27 | 0.81 | 1.33 | 1.08 | 0.22 | 0.00 | 0.81 | 3.12 | 2.86 | 1.35 | 0.95 | 0.61 | 13.41 | |||||||||||||
1962 | 0.75 | 0.83 | 0.57 | 1.47 | 1.51 | 0.60 | 1.24 | 0.63 | 1.70 | 1.49 | 0.80 | 0.24 | 11.83 | |||||||||||||
1963 | 0.96 | 1.24 | 1.38 | 0.61 | 0.30 | 0.84 | 1.79 | 3.63 | 1.29 | 1.18 | 0.59 | 0.48 | 14.29 | |||||||||||||
1964 | 0.60 | 0.49 | 1.50 | 1.86 | 0.80 | 0.92 | 2.39 | 4.06 | 1.36 | 0.05 | 3.03 | 2.24 | 19.30 | |||||||||||||
1965 | 0.77 | 0.57 | 1.48 | 1.71 | 1.04 | 0.85 | 1.50 | 2.25 | 3.66 | 1.52 | 1.07 | 1.81 | 18.23 | |||||||||||||
1966 | 0.45 | 0.34 | 0.10 | 0.73 | 1.71 | 1.20 | 2.20 | 1.88 | 1.12 | 0.45 | 0.25 | 1.58 | 12.01 | |||||||||||||
1967 | 0.58 | 0.50 | 0.33 | 0.54 | 0.83 | 0.52 | 2.49 | 2.88 | 0.45 | 0.47 | 0.22 | 2.85 | 12.66 | |||||||||||||
1968 | 0.24 | 1.78 | 0.12 | 1.25 | 0.41 | 0.00 | 2.21 | 1.58 | 0.30 | 0.47 | 0.60 | 0.63 | 9.59 | |||||||||||||
1969 | 1.82 | 0.60 | 0.87 | 0.41 | 0.70 | 3.14 | 1.49 | 2.19 | 1.36 | 4.49 | 0.36 | 0.70 | 18.13 | |||||||||||||
1970 | 1.00 | 0.30 | 0.68 | 0.83 | 0.13 | ----- | z | 3.83 | 2.24 | 2.60 | 1.37 | 1.05 | 0.35 | 14.38 | a | |||||||||||
1971 | 0.03 | 0.79 | 0.53 | 0.57 | 0.75 | 0.06 | 1.40 | 2.31 | 1.13 | 1.64 | 0.96 | 0.81 | 10.98 | |||||||||||||
1972 | 0.39 | 0.02 | 0.95 | 0.33 | 0.20 | 0.84 | 1.03 | 1.88 | 1.28 | 2.13 | 1.04 | 1.43 | 11.52 | |||||||||||||
1973 | 0.17 | 0.11 | 0.86 | 0.84 | 1.48 | 0.62 | 1.39 | 1.26 | 0.73 | 0.00 | 0.20 | 3.72 | 11.38 | |||||||||||||
1974 | 1.10 | 0.40 | 0.82 | 1.32 | 0.10 | 0.10 | 3.05 | 0.88 | 0.15 | 1.00 | 1.15 | 1.29 | 11.36 | |||||||||||||
1975 | 0.85 | 0.69 | 1.60 | 0.81 | 1.57 | 0.67 | 3.11 | 0.80 | 0.73 | 0.75 | 1.13 | 0.39 | 13.10 | |||||||||||||
1976 | 0.41 | 0.76 | 0.42 | 1.07 | 0.56 | 0.74 | 1.48 | 1.58 | 0.94 | 0.61 | 0.25 | 0.00 | 8.82 | |||||||||||||
1977 | 0.23 | 0.88 | 0.18 | 0.83 | 0.55 | 0.94 | 1.49 | ----- | z | 0.61 | 1.38 | ----- | z | 0.99 | 8.08 | b | ||||||||||
1978 | 1.34 | 0.33 | 1.52 | ----- | z | 1.83 | 0.40 | 1.66 | 0.69 | 0.22 | 1.06 | 2.79 | f | 1.60 | 10.65 | b | ||||||||||
1979 | 1.65 | a | 0.51 | 1.29 | 0.30 | e | 0.79 | d | 0.46 | 1.29 | 0.95 | 0.53 | 0.98 | 1.24 | 0.50 | 10.49 | ||||||||||
1980 | 1.40 | a | 1.83 | a | 0.49 | g | 2.18 | 0.74 | c | 0.00 | 0.68 | 1.61 | 1.10 | 1.39 | 0.24 | b | 0.23 | 11.40 | a | |||||||
1981 | 0.23 | 0.39 | 0.95 | 0.41 | 1.64 | 1.18 | 5.51 | 2.30 | 1.06 | b | 1.88 | 0.76 | 1.39 | 17.70 | ||||||||||||
1982 | 1.23 | 0.75 | b | 0.87 | b | 0.56 | 0.90 | y | 0.19 | ----- | z | 6.60 | 2.00 | 0.43 | 0.88 | 0.38 | 13.89 | b | ||||||||
1983 | 0.33 | 0.40 | 1.02 | 1.24 | c | 1.30 | 0.75 | 0.70 | 3.64 | a | 1.15 | 0.52 | 1.97 | 3.44 | 16.46 | |||||||||||
1984 | 0.16 | 0.90 | 1.45 | 1.68 | 0.64 | 1.94 | 3.52 | 4.02 | a | 1.32 | 1.83 | 0.57 | 1.26 | 19.29 | ||||||||||||
1985 | 0.29 | a | 0.62 | 1.84 | b | 1.98 | a | 0.94 | 0.48 | 2.91 | 1.03 | 3.89 | 1.14 | 1.18 | a | 0.45 | a | 16.75 | ||||||||
1986 | 0.32 | 0.90 | 0.65 | 1.11 | a | 0.78 | 1.10 | 2.51 | 1.86 | 2.82 | 1.10 | 2.31 | a | 0.10 | a | 15.56 | ||||||||||
1987 | 0.62 | a | 2.37 | 1.20 | 0.46 | 0.79 | 1.29 | 0.51 | 1.89 | 0.52 | 0.54 | 1.62 | 0.84 | 12.65 | ||||||||||||
1988 | 0.81 | 0.60 | a | 0.79 | a | 0.32 | 0.57 | 1.33 | 0.82 | 2.39 | 1.28 | 0.78 | 1.57 | 1.05 | 12.31 | |||||||||||
1989 | 0.66 | 0.83 | 0.38 | 0.67 | 0.41 | 0.27 | 2.14 | 1.92 | 0.90 | 0.87 | 0.16 | 0.31 | 9.52 | |||||||||||||
1990 | 0.66 | 0.37 | 1.16 | a | 2.25 | 2.07 | 0.14 | 2.14 | 2.76 | 2.97 | 1.80 | 1.21 | 0.21 | 17.74 | ||||||||||||
1991 | 0.33 | 0.25 | 1.34 | 0.68 | 1.41 | 0.47 | 3.31 | 1.68 | 0.66 | 0.42 | 1.17 | 0.20 | 11.92 | |||||||||||||
1992 | 0.41 | a | 0.37 | 0.78 | 0.39 | 3.51 | 0.37 | 2.01 | 2.47 | 0.46 | 0.43 | 1.63 | 0.52 | 13.35 | ||||||||||||
1993 | 0.38 | 1.39 | 1.14 | a | 0.90 | 1.38 | 0.54 | 0.18 | 3.21 | 0.99 | 1.22 | 0.84 | a | 0.33 | 12.50 | |||||||||||
1994 | 0.55 | 0.65 | 1.00 | 1.77 | 1.21 | 0.91 | 0.44 | 2.71 | 2.37 | 1.52 | 1.54 | 0.15 | a | 14.82 | ||||||||||||
1995 | 0.83 | 1.08 | 1.48 | 1.21 | 1.86 | 2.25 | 1.03 | 2.75 | 2.16 | 0.37 | 1.24 | 1.05 | 17.31 | |||||||||||||
1996 | 1.83 | a | 0.86 | 0.60 | 0.67 | a | 0.29 | 0.92 | 2.40 | 1.09 | 1.90 | 3.88 | 0.81 | 1.73 | 16.98 | |||||||||||
1997 | 1.18 | 0.84 | 0.17 | 1.49 | 0.89 | 1.81 | 1.81 | 2.80 | 2.05 | 1.52 | 1.27 | 0.24 | 16.07 | |||||||||||||
1998 | 1.01 | 0.46 | 1.58 | 0.80 | 0.03 | 0.19 | 3.35 | 2.00 | 1.44 | 3.24 | 0.50 | 0.10 | 14.70 | |||||||||||||
1999 | 0.93 | 0.26 | 0.66 | 2.51 | 1.85 | 1.00 | 3.51 | 4.39 | 1.01 | 0.37 | 0.00 | 0.60 | a | 17.09 | ||||||||||||
2000 | 0.92 | 0.67 | 2.96 | a | 0.48 | b | 1.72 | 0.95 | 1.30 | 3.72 | 0.92 | a | 3.15 | 0.33 | b | 0.71 | 17.83 | |||||||||
2001 | 0.54 | a | 1.00 | a | 1.05 | 1.14 | a | 1.01 | 0.50 | 2.73 | 3.24 | 0.80 | 0.61 | 0.81 | 0.55 | 13.98 | ||||||||||
2002 | 0.21 | 0.39 | 0.31 | 0.54 | 0.00 | 0.03 | 0.77 | 2.28 | 3.16 | 1.05 | 1.53 | 0.25 | 10.52 | |||||||||||||
2003 | 0.39 | a | 0.39 | 0.99 | 0.29 | 1.12 | 0.67 | 1.25 | 3.06 | 2.76 | 0.36 | 1.23 | a | 0.35 | 12.86 | |||||||||||
2004 | 0.68 | c | 0.44 | 0.71 | 1.75 | 0.23 | 0.77 | 3.53 | 1.05 | 2.24 | 1.48 | 0.93 | 0.82 | 14.63 | ||||||||||||
2005 | 1.20 | 0.27 | a | 0.57 | 0.69 | 0.27 | 0.70 | 0.54 | 2.60 | 2.02 | 1.88 | 0.83 | 0.85 | 12.42 | ||||||||||||
2006 | 1.19 | 0.98 | 0.59 | c | 1.16 | 0.47 | 1.02 | 2.60 | 3.86 | 1.29 | 2.15 | 0.56 | 1.15 | 17.02 | ||||||||||||
2007 | 0.41 | 0.32 | 0.61 | 2.06 | 1.36 | 0.57 | 4.55 | 2.30 | 2.34 | 0.75 | 0.10 | 2.95 | 18.32 | |||||||||||||
2008 | 1.63 | a | 1.04 | c | 0.64 | f | 0.67 | 0.49 | 0.00 | 1.69 | 1.62 | 0.96 | 0.62 | 0.69 | 1.59 | 11.00 | a | |||||||||
2009 | 0.05 | 0.65 | 0.67 | 0.92 | 1.87 | c | 2.29 | 2.13 | 1.12 | 1.12 | 1.59 | a | 0.23 | 0.92 | 13.56 | |||||||||||
2010 | 0.84 | 0.71 | 0.89 | 0.89 | 0.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.59 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.81 | 0.77 | 0.96 | 1.09 | 1.01 | 0.81 | 2.05 | 2.21 | 1.34 | 1.29 | 0.93 | 0.99 | 14.39 | |||||||||||||
S.D. | 0.53 | 0.46 | 0.52 | 0.59 | 0.66 | 0.71 | 1.16 | 1.13 | 0.87 | 0.89 | 0.64 | 0.80 | 2.92 | |||||||||||||
SKEW | 0.71 | 1.18 | 0.79 | 0.70 | 0.83 | 1.38 | 0.71 | 0.80 | 0.87 | 1.28 | 1.07 | 1.58 | 0.23 | |||||||||||||
MAX | 2.13 | 2.37 | 2.96 | 2.73 | 3.51 | 3.14 | 5.51 | 6.60 | 3.89 | 4.49 | 3.03 | 3.72 | 22.18 | |||||||||||||
MIN | 0.00 | 0.02 | 0.10 | 0.06 | 0.00 | 0.00 | 0.18 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 | 8.82 | |||||||||||||
YRS | 73 | 73 | 70 | 71 | 72 | 73 | 74 | 73 | 73 | 73 | 71 | 73 | 63 |