YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | ----- | z | 0.59 | 0.80 | 1.22 | 0.76 | 0.10 | 1.20 | 1.53 | 0.03 | ----- | z | ----- | z | 2.60 | 8.83 | c | |||||||||
1907 | 1.55 | 0.82 | 2.22 | 0.00 | 0.00 | 0.83 | 0.00 | 0.00 | 0.00 | 2.25 | 0.00 | 0.20 | 7.87 | |||||||||||||
1908 | 0.67 | 2.31 | 0.45 | 0.51 | 1.30 | 0.00 | ----- | z | 0.75 | 0.45 | 1.00 | 0.00 | 0.12 | 7.56 | a | |||||||||||
1909 | 0.38 | 1.34 | 0.71 | 0.03 | 0.00 | 0.40 | 0.85 | 0.57 | 2.47 | 0.77 | 1.20 | a | 0.27 | 8.99 | ||||||||||||
1910 | 0.90 | 0.00 | 0.29 | 0.08 | 0.02 | 0.00 | 1.09 | 0.08 | 1.07 | 1.10 | 0.71 | 1.09 | 6.43 | |||||||||||||
1911 | 1.52 | 1.21 | 1.36 | 0.19 | 0.13 | 0.88 | 1.39 | 0.00 | 0.48 | 0.30 | 0.10 | 0.12 | 7.68 | |||||||||||||
1912 | 0.15 | 0.00 | 1.41 | 0.67 | 0.17 | 0.00 | 0.39 | 0.00 | 0.10 | 0.91 | 0.42 | 0.06 | 4.28 | |||||||||||||
1913 | 0.25 | a | 0.58 | 0.48 | 0.37 | 1.80 | 1.84 | 1.03 | 1.71 | 2.20 | 0.02 | 0.83 | 0.32 | 11.43 | ||||||||||||
1914 | 2.37 | 1.72 | 0.01 | 1.56 | 0.45 | 1.28 | 0.40 | 0.63 | 1.79 | 0.00 | 0.04 | 0.37 | 10.62 | |||||||||||||
1915 | 0.43 | 1.28 | 0.99 | 2.68 | 0.48 | 0.00 | 1.12 | 0.01 | 0.81 | 0.00 | 0.00 | 0.55 | 8.35 | |||||||||||||
1916 | 2.60 | 0.45 | 0.70 | 0.58 | 0.72 | 0.00 | 0.15 | 0.94 | 0.25 | 1.10 | 0.22 | 0.32 | 8.03 | |||||||||||||
1917 | 0.06 | 0.95 | 0.00 | 0.69 | 1.13 | 0.00 | 0.89 | 0.54 | 0.04 | 0.07 | 0.96 | 0.00 | 5.33 | |||||||||||||
1918 | 0.04 | 1.04 | 2.08 | 0.00 | 0.64 | w | 2.83 | 0.96 | 0.45 | 0.54 | 0.77 | 0.03 | 0.63 | 9.37 | a | |||||||||||
1919 | 0.00 | 0.33 | r | 1.35 | 0.06 | 0.90 | ----- | z | 0.09 | 0.04 | 0.09 | 0.76 | 0.02 | ----- | z | 3.31 | c | |||||||||
1920 | ----- | z | 1.31 | 2.55 | v | ----- | z | ----- | z | 0.31 | y | ----- | z | ----- | z | 0.00 | ----- | z | ----- | z | ----- | z | 1.31 | j | ||
1921 | 0.93 | 0.10 | 0.10 | 0.00 | 2.33 | 0.00 | 0.00 | 1.28 | 0.00 | 0.00 | 0.00 | 2.00 | a | 6.74 | ||||||||||||
1922 | 1.02 | b | 0.45 | 0.20 | 0.40 | ----- | z | ----- | z | ----- | z | 0.11 | 0.00 | 0.00 | 0.74 | 0.86 | 3.78 | c | ||||||||
1923 | 0.70 | 0.00 | 0.00 | ----- | z | 0.61 | 0.44 | ----- | z | 0.09 | 0.62 | 0.03 | 0.26 | 0.20 | 2.95 | b | ||||||||||
1924 | 0.10 | 0.01 | 0.37 | 0.05 | 0.00 | 0.00 | 0.01 | 0.06 | ----- | z | 0.00 | 0.15 | ----- | z | 0.75 | b | ||||||||||
1925 | 0.16 | ----- | z | 0.45 | ----- | z | ----- | z | ----- | z | 0.70 | ----- | z | ----- | z | ----- | z | 0.10 | ----- | z | 1.41 | h | ||||
1926 | 0.00 | 0.18 | 0.15 | 0.39 | 0.00 | 0.25 | 0.37 | 0.18 | 0.00 | 0.46 | 0.37 | 0.44 | 2.79 | |||||||||||||
1927 | 0.00 | 0.26 | 0.26 | 0.08 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.72 | 0.00 | 0.00 | 1.57 | |||||||||||||
1928 | 0.16 | 0.26 | 0.27 | 0.00 | 0.20 | 0.00 | ----- | z | 0.00 | 0.00 | 0.05 | 0.40 | 0.42 | 1.76 | a | |||||||||||
1929 | 0.78 | 0.58 | 0.60 | ----- | z | 0.04 | 0.02 | 0.00 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 2.17 | a | |||||||||||
1930 | 0.58 | 0.20 | 0.53 | 0.30 | 0.68 | 0.00 | 0.01 | 0.26 | 0.00 | 0.02 | 0.40 | 0.00 | 2.98 | |||||||||||||
1931 | 0.12 | 0.14 | 0.25 | 1.00 | 0.03 | 0.06 | 0.01 | 6.07 | 0.00 | 0.80 | 0.54 | 0.83 | 9.85 | |||||||||||||
1932 | 1.15 | 0.70 | 0.25 | 0.40 | 0.71 | 0.63 | 0.00 | 0.00 | 0.61 | 0.00 | 0.05 | 0.25 | 4.75 | |||||||||||||
1933 | 2.25 | 0.25 | 0.01 | 0.22 | 0.17 | 0.11 | 0.10 | 0.00 | 0.00 | 0.00 | 0.24 | 0.13 | 3.48 | |||||||||||||
1934 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.01 | 0.11 | 0.00 | 0.00 | 0.70 | 0.02 | 0.48 | 1.47 | |||||||||||||
1935 | 0.33 | 0.31 | 0.13 | 0.30 | 0.30 | 0.00 | 0.02 | 0.03 | 0.00 | 0.06 | 0.00 | 0.52 | 2.00 | |||||||||||||
1936 | 0.25 | 0.72 | 0.30 | 0.00 | 0.00 | 0.00 | 0.06 | 0.01 | 0.01 | 0.25 | 0.00 | 0.84 | 2.44 | |||||||||||||
1937 | 0.70 | 0.40 | 1.50 | 0.50 | 0.01 | 0.00 | 0.00 | 0.02 | 0.02 | 0.00 | 0.01 | 0.18 | 3.34 | |||||||||||||
1938 | 0.20 | 0.20 | 0.80 | 0.35 | 0.20 | 0.44 | ----- | z | 0.59 | 0.00 | 0.00 | 0.04 | 0.50 | 3.32 | a | |||||||||||
1939 | 0.40 | 0.22 | 1.74 | x | 1.22 | 0.63 | 0.00 | 0.67 | 2.30 | 0.67 | 0.73 | 0.00 | 0.00 | 6.84 | a | |||||||||||
1940 | 0.22 | 1.46 | a | 0.09 | 0.49 | 0.00 | 0.05 | 0.00 | 0.00 | 0.00 | 1.13 | 0.45 | 1.10 | 4.99 | ||||||||||||
1941 | 1.17 | 2.13 | 1.88 | a | 1.32 | 0.15 | 0.15 | 0.47 | 1.03 | 0.00 | 1.51 | 0.03 | 0.37 | y | 9.84 | a | ||||||||||
1942 | 0.60 | 0.25 | 0.81 | 0.33 | 0.00 | 0.00 | 0.00 | 0.18 | 0.00 | 0.33 | 0.03 | 0.02 | 2.55 | |||||||||||||
1943 | 3.09 | a | 1.27 | 0.53 | 1.23 | 0.13 | 0.51 | 0.02 | 0.00 | 0.37 | a | 0.46 | 0.42 | 0.74 | 8.77 | |||||||||||
1944 | 0.39 | 1.11 | 0.25 | 0.09 | 0.25 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 2.41 | 0.65 | 5.16 | |||||||||||||
1945 | 0.00 | 1.21 | 0.88 | 0.25 | 0.26 | 0.35 | 0.10 | 1.29 | 0.02 | 1.84 | 0.25 | 0.17 | 6.62 | |||||||||||||
1946 | 0.20 | 0.75 | 0.59 | 0.53 | 0.24 | 0.00 | 1.44 | 0.39 | 0.00 | 0.93 | a | 2.00 | a | 0.65 | 7.72 | |||||||||||
1947 | 0.04 | 0.05 | 0.00 | 0.60 | 0.20 | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.28 | 1.22 | a | |||||||||||
1948 | 0.00 | 0.30 | 0.10 | 0.06 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | a | 0.16 | 0.00 | 0.37 | 1.99 | ||||||||||||
1949 | 0.20 | 0.00 | 0.09 | 0.27 | 0.95 | 0.32 | 0.24 | 0.20 | 0.00 | 0.20 | 0.18 | 0.11 | 2.76 | |||||||||||||
1950 | 0.11 | 0.00 | 0.13 | 0.34 | 0.00 | 0.27 | 1.40 | q | 0.00 | d | 0.50 | 0.12 | 0.04 | 0.02 | 1.53 | a | ||||||||||
1951 | 0.42 | 0.31 | 0.21 | 0.74 | 0.00 | ----- | z | 0.61 | 0.01 | 0.03 | 0.50 | 0.31 | 0.32 | 3.46 | a | |||||||||||
1952 | 0.97 | 0.00 | 1.65 | 2.11 | 0.00 | 0.20 | 2.34 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | 7.27 | c | |||||||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | h | 0.40 | 0.31 | 0.00 | 0.36 | 0.32 | 0.00 | 1.39 | f | ||||||
1954 | 1.14 | 0.93 | 0.88 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | t | 1.25 | 0.00 | 0.09 | b | ----- | z | 4.29 | f | |||||
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.07 | 0.00 | 0.07 | j | ||
1959 | 0.11 | 0.69 | 0.00 | 0.08 | 0.15 | 0.00 | 0.57 | 0.00 | 0.71 | 0.00 | 0.00 | 0.56 | 2.87 | |||||||||||||
1960 | 0.15 | 0.60 | 0.00 | 0.47 | 0.14 | 0.00 | 0.41 | 0.00 | 0.22 | 0.67 | 3.68 | 0.21 | 6.55 | |||||||||||||
1961 | 1.18 | 0.06 | 0.59 | 0.38 | 0.00 | 0.51 | 0.13 | 0.31 | 0.58 | 0.08 | 0.29 | 0.36 | a | 4.47 | ||||||||||||
1962 | 0.27 | 2.17 | 0.30 | 0.00 | 1.70 | 0.43 | 0.10 | 0.00 | 1.17 | 0.00 | 0.07 | 0.02 | 6.23 | |||||||||||||
1963 | 0.02 | 0.00 | 0.40 | 0.48 | 0.22 | 0.96 | 0.00 | 0.33 | 0.87 | 0.52 | 0.61 | 0.07 | 4.48 | |||||||||||||
1964 | ----- | z | 0.00 | x | 0.00 | ----- | z | 0.53 | 0.00 | 0.00 | 1.16 | 0.01 | m | ----- | z | ----- | z | ----- | z | 1.69 | g | |||||
1965 | ----- | z | 1.00 | 0.30 | ----- | z | 0.00 | i | 0.98 | 1.06 | 1.98 | 0.02 | 0.00 | 1.51 | 0.50 | 7.35 | c | |||||||||
1966 | 0.34 | 0.37 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.30 | 1.89 | 0.00 | 0.08 | 1.68 | 4.71 | |||||||||||||
1967 | 1.10 | 0.10 | 0.40 | 2.11 | 0.16 | 1.15 | 0.88 | 0.83 | 2.99 | 0.00 | 1.12 | 0.04 | 10.88 | |||||||||||||
1968 | 0.03 | 2.50 | 0.15 | 0.27 | 0.00 | 0.75 | 0.34 | 0.67 | 0.00 | 0.91 | 0.03 | 0.12 | 5.77 | |||||||||||||
1969 | 2.84 | 1.16 | 0.14 | 0.28 | 0.21 | 1.64 | 0.26 | 0.25 | 0.10 | 0.00 | 0.55 | 0.00 | 7.43 | |||||||||||||
1970 | 0.00 | 1.31 | 0.16 | 0.07 | 0.00 | 0.23 | 0.94 | 0.58 | 0.45 | 0.00 | 0.46 | 0.12 | 4.32 | |||||||||||||
1971 | 0.02 | 0.05 | 0.03 | 0.11 | 1.75 | 0.00 | 0.19 | 0.10 | 0.00 | 0.07 | 0.08 | 0.05 | 2.45 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | j | ----- | z | 0.24 | 0.00 | 0.00 | 3.07 | 0.05 | 0.00 | 3.36 | b | ||||||||||
1973 | 2.75 | 1.85 | 0.15 | 0.00 | ----- | z | ----- | z | 0.00 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.75 | h | ||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.19 | 0.00 | 2.44 | 0.68 | 0.56 | 4.87 | g | |||||
1975 | 0.00 | 0.00 | 0.95 | 0.69 | 0.15 | 0.10 | 0.17 | 0.92 | 1.46 | 1.22 | 0.00 | 0.02 | 5.68 | |||||||||||||
1976 | 0.01 | 3.02 | 0.81 | 0.81 | 0.71 | 0.07 | 2.44 | 0.01 | 2.29 | 1.75 | 0.08 | 0.00 | 12.00 | |||||||||||||
1977 | 0.42 | 0.00 | 0.33 | 0.01 | 2.34 | 0.97 | 0.13 | 2.38 | 0.01 | 0.00 | 0.21 | 0.53 | 7.33 | |||||||||||||
1978 | 1.62 | 1.80 | 2.98 | 2.70 | 0.00 | 0.00 | 0.03 | 0.67 | 1.93 | 0.65 | 0.07 | 0.74 | 13.19 | |||||||||||||
1979 | 0.42 | 0.28 | 1.31 | 0.00 | 0.00 | 0.00 | 1.18 | 0.68 | 0.74 | 0.00 | 0.00 | 0.07 | 4.68 | |||||||||||||
1980 | 0.91 | 1.91 | 0.83 | 0.39 | 0.81 | 0.00 | 0.67 | 0.09 | 1.08 | 0.00 | 0.15 | 0.00 | 6.84 | |||||||||||||
1981 | 0.62 | 0.16 | 1.32 | 0.10 | 2.41 | ----- | z | 0.13 | 0.27 | 0.45 | 0.59 | 1.09 | 0.00 | 7.14 | a | |||||||||||
1982 | 0.29 | a | 0.02 | 1.61 | 0.44 | 0.15 | 0.72 | 1.05 | 1.12 | 0.28 | 0.39 | 0.92 | 0.76 | a | 7.75 | |||||||||||
1983 | 1.11 | 0.44 | 2.75 | b | 0.92 | 0.05 | 0.00 | ----- | z | 0.00 | y | ----- | z | 0.04 | e | ----- | z | 0.33 | 5.64 | d | ||||||
1984 | 0.07 | 0.20 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.27 | j | ||
1985 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | a | 0.00 | 0.55 | a | 1.27 | 0.06 | b | 0.30 | b | 2.18 | d | ||||
1986 | 1.10 | 0.89 | a | 0.39 | a | 0.45 | a | 0.00 | 0.00 | 0.03 | 0.74 | 0.00 | 0.00 | 0.51 | ----- | z | 4.11 | a | ||||||||
1987 | 0.85 | 0.01 | d | 1.67 | c | 0.36 | 2.57 | b | 0.05 | 0.16 | 0.32 | a | 0.03 | 1.08 | 1.76 | 0.37 | b | 9.23 | ||||||||
1988 | 0.54 | 0.46 | 0.13 | 3.16 | 0.15 | 1.30 | 0.03 | 1.45 | 0.55 | 0.00 | 0.05 | 0.35 | 8.17 | |||||||||||||
1989 | ----- | z | 0.38 | c | 0.00 | a | 0.00 | 1.82 | 0.94 | 0.02 | 1.48 | 0.36 | 0.00 | 0.00 | 0.00 | 5.00 | a | |||||||||
1990 | 0.96 | 0.00 | c | 0.21 | b | 0.37 | 1.22 | 0.04 | 1.03 | 0.25 | 0.94 | 0.00 | 0.00 | 0.05 | 5.07 | |||||||||||
1991 | 0.17 | 0.75 | 1.56 | 0.01 | a | 1.32 | 0.00 | 0.53 | 0.35 | 0.72 | 0.20 | 0.00 | 0.36 | 5.97 | ||||||||||||
1992 | 0.28 | 5.10 | a | 1.51 | u | 0.30 | 0.14 | 0.08 | 0.23 | 0.88 | ----- | z | ----- | z | ----- | z | 0.30 | c | 7.31 | d | ||||||
1993 | 1.19 | 1.37 | x | 1.44 | 0.00 | 0.00 | 2.03 | 0.00 | 0.00 | 0.09 | 0.68 | ----- | z | ----- | z | 5.43 | c | |||||||||
1994 | 0.00 | 1.34 | x | 0.62 | 1.03 | 0.82 | 0.00 | 0.10 | 0.00 | ----- | z | 0.00 | 0.63 | 0.86 | 4.06 | b | ||||||||||
1995 | 2.51 | p | 0.24 | a | 2.36 | a | 0.69 | 2.07 | 1.11 | 0.00 | 0.19 | 0.05 | 0.00 | 0.00 | 0.28 | 6.99 | a | |||||||||
1996 | 0.04 | 0.38 | 0.53 | 0.04 | 0.71 | ----- | z | 1.29 | 0.12 | 0.00 | ----- | z | 0.39 | 0.88 | 4.38 | b | ||||||||||
1997 | ----- | z | 0.31 | 0.01 | 0.03 | ----- | z | 1.40 | 0.35 | 0.30 | 0.79 | 0.10 | 0.95 | 0.71 | 4.95 | b | ||||||||||
1998 | 0.20 | 3.01 | 1.60 | ----- | z | 1.54 | 1.39 | ----- | z | 0.35 | 1.56 | 1.11 | 0.12 | 0.00 | 10.88 | b | ||||||||||
1999 | 1.09 | 0.00 | 0.36 | 2.35 | 0.09 | 0.40 | 0.87 | ----- | z | 0.10 | 0.00 | 0.00 | 0.00 | 5.26 | a | |||||||||||
2000 | 0.04 | 2.80 | 0.40 | 0.00 | 0.12 | 0.00 | 0.00 | 2.35 | a | 0.00 | v | 0.21 | 0.10 | 0.00 | 6.02 | a | ||||||||||
2001 | 1.28 | 1.65 | 0.46 | 1.79 | 0.05 | 0.00 | m | 2.30 | 0.96 | 0.00 | 0.00 | 0.81 | 0.30 | 9.60 | a | |||||||||||
2002 | 0.01 | 0.02 | 0.00 | 0.00 | 1.36 | 0.05 | i | 0.15 | 0.00 | l | 0.65 | 0.02 | 0.28 | 0.23 | a | 2.72 | b | |||||||||
2003 | 0.01 | d | 0.62 | d | 0.66 | a | 0.85 | a | 0.24 | 0.00 | ----- | z | 0.73 | 0.09 | 0.19 | 0.27 | y | 0.89 | a | 4.28 | b | |||||
2004 | 0.00 | 1.75 | 0.40 | 0.76 | 0.01 | 0.27 | 0.00 | 1.25 | 0.00 | 1.22 | 0.81 | 1.25 | 7.72 | |||||||||||||
2005 | ----- | z | 1.71 | a | 0.32 | 0.15 | v | 0.00 | n | 0.00 | 0.78 | 0.15 | f | 0.00 | d | 0.12 | 0.09 | 0.40 | 3.42 | d | ||||||
2006 | 0.80 | a | 0.08 | 1.29 | c | 0.73 | b | 0.09 | e | 0.32 | 0.71 | 0.00 | 0.00 | c | 0.14 | g | 0.05 | f | ----- | z | 4.02 | c | ||||
2007 | 0.31 | b | 0.61 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.01 | ----- | z | 0.00 | y | 0.93 | i | |
2008 | 0.97 | r | 0.24 | p | 0.00 | p | 0.00 | r | 0.00 | p | 0.00 | 0.14 | a | 0.00 | q | 0.16 | l | 0.03 | n | 0.48 | t | 0.00 | n | 0.14 | j | |
2009 | 0.00 | m | 0.53 | h | 0.00 | n | 0.13 | g | 0.00 | p | 0.86 | k | 0.94 | b | 0.00 | 0.19 | j | 0.00 | 0.00 | 0.25 | m | 0.94 | h | |||
2010 | 0.96 | o | 0.50 | h | 0.31 | l | 0.65 | h | 0.05 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.60 | 0.77 | 0.63 | 0.54 | 0.50 | 0.38 | 0.45 | 0.53 | 0.44 | 0.44 | 0.37 | 0.39 | 6.05 | |||||||||||||
S.D. | 0.72 | 0.89 | 0.67 | 0.68 | 0.68 | 0.57 | 0.56 | 0.84 | 0.66 | 0.62 | 0.59 | 0.46 | 2.87 | |||||||||||||
SKEW | 1.69 | 1.97 | 1.42 | 1.97 | 1.55 | 1.90 | 1.64 | 3.71 | 1.88 | 1.87 | 2.99 | 2.26 | 0.40 | |||||||||||||
MAX | 3.09 | 5.10 | 2.98 | 3.16 | 2.57 | 2.83 | 2.44 | 6.07 | 2.99 | 3.07 | 3.68 | 2.60 | 13.19 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.47 | |||||||||||||
YRS | 87 | 90 | 90 | 84 | 84 | 82 | 85 | 89 | 88 | 89 | 88 | 85 | 52 |