YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.79 | y | 0.91 | ----- | z | ----- | z | ----- | z | ----- | z | 0.91 | k | |
1912 | ----- | z | ----- | z | ----- | z | 1.11 | v | 1.26 | ----- | z | 2.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.76 | j | ||
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1915 | ----- | z | ----- | z | 0.71 | 4.90 | 3.03 | 1.83 | 1.65 | 2.53 | 1.95 | 1.81 | 0.03 | 0.56 | 19.00 | b | ||||||||||
1916 | ----- | z | ----- | z | 0.19 | 0.74 | 1.61 | 0.48 | 1.51 | 4.35 | 1.37 | 0.73 | ----- | z | 0.16 | v | 10.98 | d | ||||||||
1917 | ----- | z | 0.11 | y | ----- | z | 1.67 | 4.48 | 0.56 | 1.79 | 1.20 | 0.91 | 0.57 | ----- | z | ----- | z | 11.18 | e | |||||||
1918 | ----- | z | ----- | z | ----- | z | 4.14 | 1.69 | 2.95 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.78 | i | |||
1919 | 0.00 | 0.14 | 0.70 | 0.58 | 0.34 | 0.59 | 2.75 | 1.20 | 3.10 | ----- | z | ----- | z | ----- | z | 9.40 | c | |||||||||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.28 | 1.25 | 1.27 | o | 0.88 | q | ----- | z | ----- | z | 0.27 | x | 5.53 | j | ||
1921 | ----- | z | 0.07 | y | 0.14 | 0.57 | t | 1.86 | q | 2.08 | 1.72 | o | 0.97 | 0.13 | w | ----- | z | ----- | z | ----- | z | 3.19 | i | |||
1922 | ----- | z | 0.28 | x | ----- | z | 2.33 | j | 1.76 | t | 2.70 | s | 1.81 | q | 2.35 | n | ----- | z | ----- | z | 2.23 | v | ----- | z | 0.00 | l |
1923 | ----- | z | ----- | z | ----- | z | 0.86 | s | 2.98 | h | 2.41 | q | 1.62 | p | 2.92 | o | 2.68 | t | 3.45 | o | ----- | z | 0.09 | 0.09 | k | |
1924 | 0.06 | 0.30 | y | 0.78 | o | 0.58 | s | 3.28 | r | 0.86 | 0.50 | v | 0.27 | x | 2.54 | t | 1.66 | t | ----- | z | 0.13 | x | 0.92 | j | ||
1925 | ----- | z | 0.01 | v | ----- | z | 1.28 | x | 1.21 | u | 1.14 | 3.85 | r | 1.38 | p | 0.28 | y | 2.37 | m | ----- | z | 0.67 | u | 1.14 | k | |
1926 | 0.29 | w | 0.16 | w | 0.33 | s | 1.10 | u | 2.48 | k | 4.44 | p | 3.13 | i | 1.50 | t | 0.46 | s | 0.83 | w | 0.12 | u | 0.33 | x | 0.00 | l |
1927 | ----- | z | 0.29 | v | 1.16 | p | 1.35 | r | 1.53 | w | 2.75 | j | 2.10 | m | 3.76 | g | 0.84 | t | 1.49 | y | 0.18 | x | 0.12 | y | 0.00 | l |
1928 | 0.10 | x | 0.41 | t | 0.62 | v | 0.36 | t | 3.78 | o | 2.61 | h | 1.45 | p | 0.72 | s | ----- | z | 0.54 | w | 0.73 | w | ----- | z | 0.00 | l |
1929 | 0.02 | s | 0.26 | p | 0.55 | q | 2.97 | t | 1.32 | o | 0.76 | r | 2.43 | q | 2.16 | t | 1.54 | p | 0.73 | s | 0.47 | t | ----- | z | 0.00 | l |
1930 | 0.24 | q | 0.19 | w | 0.18 | s | 1.18 | m | 3.27 | h | 0.61 | w | 1.05 | r | 6.30 | m | 1.35 | s | 1.87 | s | 0.40 | w | ----- | z | 0.00 | l |
1931 | ----- | z | 0.30 | u | 0.28 | r | 0.59 | t | 1.57 | q | 1.92 | q | 0.83 | w | 1.75 | 1.10 | 1.33 | 0.15 | 0.12 | 4.45 | g | |||||
1932 | 0.03 | 0.50 | 0.50 | w | 0.39 | 1.76 | 3.47 | 1.71 | o | 1.17 | w | 0.26 | 0.19 | 0.00 | 0.24 | 6.84 | c | |||||||||
1933 | 0.06 | 0.07 | 0.44 | a | 1.50 | 3.04 | 0.54 | 1.64 | 3.18 | 2.12 | 0.00 | 0.04 | 0.26 | 12.89 | ||||||||||||
1934 | 0.03 | 0.88 | 0.33 | 0.97 | 1.44 | 1.87 | t | 1.01 | 1.77 | 0.37 | 0.00 | 0.03 | 0.07 | 6.90 | a | |||||||||||
1935 | 0.03 | 0.13 | 0.55 | 2.54 | 7.28 | 1.86 | 1.67 | 0.54 | 1.76 | 0.19 | 0.13 | 0.07 | 16.75 | |||||||||||||
1936 | 0.06 | 0.17 | 0.42 | 1.27 | 1.66 | 3.34 | 0.29 | 2.29 | 0.21 | 0.65 | 0.13 | 0.40 | 10.89 | |||||||||||||
1937 | 0.22 | 0.04 | 0.95 | 1.16 | 1.72 | 2.29 | 2.82 | 0.81 | 0.67 | 0.87 | 0.57 | 0.89 | 13.01 | |||||||||||||
1938 | 0.09 | 0.11 | 0.87 | 2.08 | v | 2.32 | 1.96 | 2.17 | 1.74 | 5.43 | 0.39 | 0.32 | 0.42 | 15.82 | a | |||||||||||
1939 | 0.51 | 0.26 | 1.11 | 1.31 | 1.18 | 1.39 | 0.25 | 1.02 | 0.59 | 0.46 | 0.02 | 0.21 | 8.31 | |||||||||||||
1940 | 0.86 | r | 0.20 | 0.71 | 1.74 | 1.66 | 0.58 | 2.00 | 1.19 | 2.83 | f | 0.28 | 0.58 | 0.31 | 9.25 | b | ||||||||||
1941 | 0.24 | 0.20 | 1.15 | 4.22 | 1.98 | 6.76 | 1.31 | 1.45 | 1.35 | 1.07 | 0.41 | 0.37 | 20.51 | |||||||||||||
1942 | 0.35 | 0.39 | 0.33 | 4.02 | 3.33 | 2.39 | 2.50 | 1.56 | 1.19 | 3.75 | 1.07 | 0.14 | 21.02 | |||||||||||||
1943 | 0.16 | 0.31 | 0.17 | 1.74 | 3.90 | 2.74 | 3.47 | 1.16 | 0.27 | 0.67 | 0.16 | 0.14 | 14.89 | |||||||||||||
1944 | 0.39 | 0.37 | 1.42 | 2.38 | 1.76 | 3.66 | 3.23 | 0.32 | 0.28 | 0.00 | 0.08 | 0.36 | 14.25 | |||||||||||||
1945 | 0.62 | 0.62 | 0.34 | 3.01 | 1.36 | 3.98 | h | 2.81 | 1.74 | o | ----- | z | ----- | z | ----- | z | ----- | z | 8.76 | f | ||||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1948 | 0.39 | 0.48 | 0.35 | 0.96 | 1.95 | 1.59 | 1.40 | 1.22 | 0.69 | 0.75 | 0.21 | 0.82 | 10.81 | |||||||||||||
1949 | 2.00 | a | 0.03 | 1.63 | 1.09 | 4.54 | 4.03 | 2.18 | 0.82 | 0.37 | 1.39 | 0.10 | 0.14 | 18.32 | ||||||||||||
1950 | 0.07 | 0.11 | 0.33 | 0.97 | 2.15 | 1.79 | 2.69 | 0.21 | 3.07 | 0.18 | 0.95 | 0.14 | 12.66 | |||||||||||||
1951 | 0.54 | 0.30 | 0.23 | 2.16 | 2.57 | 2.95 | 2.13 | 1.49 | 1.98 | 2.28 | 1.17 | 0.43 | 18.23 | |||||||||||||
1952 | 0.04 | 0.43 | 1.97 | 0.97 | 3.95 | 2.05 | 0.30 | 1.74 | 1.07 | 0.36 | 1.05 | 0.21 | 14.14 | |||||||||||||
1953 | 0.22 | 0.93 | 0.89 | 1.08 | 1.03 | 3.44 | 2.87 | 3.61 | 0.41 | 0.25 | 0.54 | 0.32 | 15.59 | |||||||||||||
1954 | 0.12 | 0.04 | 0.95 | 0.33 | 2.01 | 2.31 | 1.02 | 1.92 | 0.91 | 0.24 | 0.20 | 0.34 | 10.39 | |||||||||||||
1955 | 0.61 | 0.68 | 1.13 | 0.92 | 3.35 | 4.55 | 1.71 | 2.09 | 1.71 | 0.06 | 1.09 | 0.39 | 18.29 | |||||||||||||
1956 | 0.60 | 0.50 | 0.55 | 1.28 | 4.87 | 2.46 | 1.31 | 2.24 | 0.19 | 0.20 | 1.23 | 0.41 | 15.84 | |||||||||||||
1957 | 0.41 | 0.03 | 0.72 | 2.59 | 5.38 | 1.74 | 4.31 | 2.22 | 1.00 | 1.34 | 0.53 | 0.04 | 20.31 | |||||||||||||
1958 | 0.02 | 0.46 | 1.27 | 1.51 | 1.94 | 2.59 | 2.41 | 1.50 | 0.84 | 0.14 | 0.62 | 1.01 | 14.31 | |||||||||||||
1959 | 0.57 | 0.24 | 1.56 | 1.55 | 2.95 | 0.80 | 1.08 | 0.20 | 1.20 | 2.04 | 0.10 | 0.00 | 12.29 | |||||||||||||
1960 | 0.25 | 0.57 | 0.30 | 1.22 | 1.85 | 1.65 | 1.01 | 0.72 | 0.51 | 1.50 | 0.57 | 0.45 | 10.60 | |||||||||||||
1961 | 0.07 | 0.27 | 2.63 | 0.85 | 3.66 | 3.53 | 1.57 | 2.40 | 2.47 | 0.74 | 0.45 | 0.06 | 18.70 | |||||||||||||
1962 | 0.71 | 0.47 | 0.51 | 0.52 | 2.08 | 5.30 | 2.60 | 0.82 | 0.73 | 1.05 | 0.70 | 0.14 | 15.63 | |||||||||||||
1963 | 0.43 | 0.17 | 1.04 | 0.66 | 0.41 | 2.82 | 2.49 | 2.32 | 3.00 | 1.43 | 0.02 | 0.38 | 15.17 | |||||||||||||
1964 | 0.02 | 0.37 | 0.41 | 1.83 | 1.21 | 1.09 | 0.35 | 0.69 | 0.14 | 0.01 | 0.09 | 0.15 | 6.36 | |||||||||||||
1965 | 0.66 | 0.43 | 0.72 | 0.22 | 3.27 | 5.09 | 1.67 | 0.78 | 2.01 | 1.17 | 0.00 | 0.35 | 16.37 | |||||||||||||
1966 | 0.15 | 0.29 | 0.12 | 0.76 | 0.31 | 2.03 | 1.77 | 1.50 | 1.93 | 0.38 | 0.56 | 0.08 | 9.88 | |||||||||||||
1967 | 0.30 | 0.48 | 0.64 | 2.08 | 4.13 | 3.72 | 1.66 | 1.07 | 1.08 | 0.29 | 0.43 | 0.66 | 16.54 | |||||||||||||
1968 | 0.03 | 0.39 | 0.41 | 2.47 | 4.59 | 2.43 | 0.94 | 1.62 | 1.05 | 1.03 | 0.67 | 0.12 | 15.75 | |||||||||||||
1969 | 0.09 | 0.34 | 0.40 | 1.30 | 1.58 | 2.86 | 1.77 | 1.32 | 0.91 | 3.08 | 0.21 | 0.24 | 14.10 | |||||||||||||
1970 | 0.23 | 0.01 | 1.82 | 1.47 | 2.67 | 3.21 | 1.60 | 0.77 | 1.58 | 1.48 | 0.27 | 0.28 | 15.39 | |||||||||||||
1971 | 0.33 | 0.63 | 1.29 | 2.95 | 2.74 | 1.00 | 0.47 | 0.60 | 2.10 | 0.91 | 0.04 | 0.09 | 13.15 | |||||||||||||
1972 | 0.52 | 0.01 | 0.56 | 1.39 | ----- | z | 4.03 | 1.43 | 2.22 | 1.44 | 0.40 | 0.98 | 0.45 | 13.43 | a | |||||||||||
1973 | 0.19 | 0.07 | 2.39 | 1.82 | 0.65 | 1.14 | 4.43 | 0.78 | 4.48 | 0.01 | 1.15 | 1.43 | 18.54 | |||||||||||||
1974 | 0.55 | ----- | z | 1.23 | 1.37 | 0.28 | 3.06 | 1.91 | 0.68 | 0.58 | 1.17 | 0.54 | 0.06 | 11.43 | a | |||||||||||
1975 | 0.59 | 0.07 | 0.75 | 1.04 | 2.78 | 1.57 | 1.34 | 0.82 | 0.54 | 0.65 | 0.50 | 0.73 | 11.38 | |||||||||||||
1976 | 0.42 | 0.47 | 0.51 | 1.64 | 1.67 | 0.62 | 2.37 | 1.93 | 1.16 | 0.31 | 0.22 | 0.07 | 11.39 | |||||||||||||
1977 | 0.16 | 0.04 | 1.02 | 2.08 | 4.09 | 0.76 | 5.83 | 1.05 | 0.39 | 0.09 | 0.63 | 0.28 | 16.42 | |||||||||||||
1978 | 0.58 | 0.55 | 0.38 | 0.87 | 3.70 | 1.15 | 0.78 | 1.89 | 0.13 | 0.65 | 0.62 | 0.71 | 12.01 | |||||||||||||
1979 | 0.21 | 0.15 | 1.71 | 0.86 | 1.91 | 2.93 | 1.21 | 2.83 | 0.64 | 0.67 | 1.27 | a | 1.04 | 15.43 | ||||||||||||
1980 | 2.15 | 0.65 | 1.59 | 1.11 | 3.28 | 0.05 | 1.52 | 1.83 | 1.25 | 0.75 | 0.43 | 0.07 | 14.68 | |||||||||||||
1981 | 0.16 | a | 0.25 | 0.90 | a | 0.65 | 5.74 | 3.14 | d | 2.78 | 3.07 | 0.83 | 1.37 | 0.14 | 0.29 | 19.32 | ||||||||||
1982 | 0.14 | 0.16 | 0.04 | 0.61 | 3.60 | 3.96 | 4.23 | 2.31 | 2.99 | 1.40 | 0.41 | 0.49 | 20.34 | |||||||||||||
1983 | 0.00 | 0.00 | 2.58 | 3.60 | 8.41 | a | 3.88 | 1.79 | 2.79 | 0.91 | 0.66 | 1.78 | 0.37 | 26.77 | ||||||||||||
1984 | 0.37 | a | 1.23 | 1.26 | 3.88 | 1.20 | 2.44 | 3.36 | 4.70 | 0.91 | 1.65 | 0.18 | 0.33 | 21.51 | ||||||||||||
1985 | 0.68 | 0.17 | 0.37 | 1.44 | 1.70 | 1.81 | 2.25 | 1.87 | 3.02 | 0.84 | 1.02 | 0.87 | b | 16.04 | ||||||||||||
1986 | 0.10 | 0.59 | 0.61 | 2.24 | 1.24 | 3.32 | 2.02 | 0.98 | 1.31 | 2.43 | 0.79 | 0.20 | 15.83 | |||||||||||||
1987 | 0.09 | a | 0.65 | a | 1.14 | 0.91 | 3.55 | 2.19 | a | 1.57 | 1.30 | 0.83 | 0.62 | 1.30 | 0.85 | a | 15.00 | |||||||||
1988 | 0.53 | 0.57 | 1.57 | 1.85 | 3.71 | 2.10 | 1.50 | 1.50 | 2.38 | 0.00 | 0.28 | a | 0.44 | 16.43 | ||||||||||||
1989 | 0.24 | 1.08 | 0.77 | 0.73 | 1.11 | 2.96 | 1.83 | 1.34 | 2.67 | 0.29 | 0.22 | 0.55 | 13.79 | |||||||||||||
1990 | 0.40 | 0.48 | 4.19 | 1.88 | 3.43 | 1.15 | 4.45 | 2.41 | 1.14 | 1.23 | 0.94 | 0.30 | 22.00 | |||||||||||||
1991 | 0.37 | 0.05 | 0.51 | 1.06 | 3.88 | 5.13 | 2.37 | 1.53 | 1.16 | 0.85 | 0.86 | 0.01 | 17.78 | |||||||||||||
1992 | 0.86 | 0.06 | 1.60 | 0.34 | 1.60 | 3.68 | 1.47 | 2.17 | 0.07 | 0.43 | 0.96 | 0.55 | 13.79 | |||||||||||||
1993 | 0.18 | a | 0.81 | 0.54 | 2.64 | 3.69 | 4.26 | 0.65 | 2.10 | 2.20 | a | 1.80 | 1.34 | 0.35 | 20.56 | |||||||||||
1994 | 0.60 | 0.44 | 0.40 | 1.20 | 0.95 | 0.47 | 1.30 | 1.66 | 0.57 | 1.53 | 0.36 | 0.39 | 9.87 | |||||||||||||
1995 | 0.13 | 0.88 | 0.13 | 1.21 | 5.75 | 5.82 | 0.79 | 0.90 | 3.07 | 0.59 | 0.51 | 0.37 | 20.15 | |||||||||||||
1996 | 0.52 | 0.02 | 2.31 | 1.10 | 3.32 | 1.62 | 2.94 | 3.43 | 2.24 | 0.36 | 0.57 | 0.03 | 18.46 | |||||||||||||
1997 | 0.46 | 0.25 | 0.60 | 2.05 | 3.37 | 4.56 | 3.79 | 5.81 | 2.04 | 2.00 | 0.34 | 0.60 | 25.87 | |||||||||||||
1998 | 0.12 | 0.47 | 0.64 | 1.24 | 1.91 | 2.63 | a | 1.64 | 1.47 | 0.90 | 1.85 | 0.48 | 0.71 | 14.06 | ||||||||||||
1999 | 0.20 | 0.18 | 0.56 | 3.80 | 4.18 | 2.07 | 1.70 | 1.68 | 2.59 | 0.45 | 0.25 | 0.13 | 17.79 | |||||||||||||
2000 | 0.26 | 0.58 | 1.21 | 0.51 | 2.52 | 0.36 | 0.98 | a | 1.19 | 2.72 | 0.23 | 0.50 | 0.79 | 11.85 | ||||||||||||
2001 | 0.36 | 0.28 | 0.46 | 2.19 | 2.44 | a | 1.77 | a | 3.66 | 1.86 | 1.47 | 0.73 | 0.20 | 0.02 | b | 15.44 | ||||||||||
2002 | 0.13 | 0.41 | 1.05 | 0.53 | 0.82 | 0.93 | 0.56 | 1.16 | 2.15 | 1.10 | 0.55 | 0.05 | 9.44 | |||||||||||||
2003 | 0.13 | 0.53 | 2.15 | 1.60 | 2.00 | 4.04 | 0.93 | 0.54 | 1.34 | 0.13 | 0.59 | 0.70 | 14.68 | |||||||||||||
2004 | 0.16 | 0.41 | 0.35 | 0.69 | 1.09 | 3.23 | 2.19 | 1.50 | 2.78 | 1.40 | 1.45 | 0.13 | 15.38 | |||||||||||||
2005 | 0.54 | 0.33 | 0.67 | 1.58 | 1.34 | 5.76 | 2.11 | 1.47 | 0.19 | ----- | z | ----- | z | ----- | z | 13.99 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.34 | 0.36 | 0.92 | 1.60 | 2.64 | 2.52 | 1.97 | 1.67 | 1.43 | 0.86 | 0.53 | 0.36 | 15.52 | |||||||||||||
S.D. | 0.36 | 0.27 | 0.72 | 1.02 | 1.57 | 1.46 | 1.08 | 1.00 | 1.05 | 0.75 | 0.42 | 0.29 | 3.96 | |||||||||||||
SKEW | 3.01 | 0.85 | 1.79 | 1.29 | 1.09 | 0.54 | 1.01 | 1.59 | 1.21 | 1.35 | 0.80 | 1.18 | 0.37 | |||||||||||||
MAX | 2.15 | 1.23 | 4.19 | 4.90 | 8.41 | 6.76 | 5.83 | 5.81 | 5.43 | 3.75 | 1.78 | 1.43 | 26.77 | |||||||||||||
MIN | 0.00 | 0.00 | 0.04 | 0.22 | 0.28 | 0.05 | 0.25 | 0.20 | 0.07 | 0.00 | 0.00 | 0.00 | 6.36 | |||||||||||||
YRS | 73 | 72 | 75 | 76 | 77 | 79 | 77 | 77 | 75 | 74 | 72 | 73 | 64 |