YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1919 | ----- | z | ----- | z | 1.04 | 0.15 | 0.31 | 0.97 | 0.09 | ----- | z | 6.17 | 3.69 | 0.80 | 0.00 | 13.22 | c | |||||||||
1920 | 0.96 | a | 0.00 | 0.00 | 0.00 | 2.41 | 0.40 | 2.10 | 8.33 | 2.05 | 1.09 | 0.75 | 0.00 | 18.09 | ||||||||||||
1921 | 0.01 | 1.33 | ----- | z | 0.00 | 0.98 | 4.54 | 1.49 | 0.28 | ----- | z | ----- | z | ----- | z | ----- | z | 8.63 | e | |||||||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1923 | 0.00 | 0.75 | a | 0.52 | 1.75 | 0.20 | 0.25 | 0.90 | 0.88 | 2.64 | 4.93 | 0.89 | 1.68 | 15.39 | ||||||||||||
1924 | 0.00 | 0.32 | 0.68 | 0.15 | 0.22 | 0.00 | 0.75 | 2.00 | ----- | z | 1.10 | 0.00 | 0.00 | 5.22 | a | |||||||||||
1925 | 0.00 | 0.08 | 0.00 | ----- | z | 0.97 | 0.00 | 2.95 | 2.00 | 0.75 | 0.90 | 0.00 | 0.00 | 7.65 | a | |||||||||||
1926 | 0.65 | 0.00 | 0.86 | u | 1.15 | 3.15 | ----- | z | ----- | z | ----- | z | 2.12 | 2.71 | 0.15 | 0.18 | 10.11 | d | ||||||||
1927 | 0.00 | ----- | z | 0.00 | 0.00 | 0.17 | ----- | z | 0.75 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.92 | g | |||||
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 | 2.13 | 0.36 | 0.69 | 3.21 | 1.57 | 0.40 | 3.39 | 5.43 | 0.99 | 0.00 | 1.18 | 19.35 | a | |||||||||||
1933 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | 1.20 | 0.53 | 2.12 | 1.21 | 0.00 | 0.00 | ----- | z | 5.06 | e | |||||||
1934 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | k | |
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 | 0.05 | 0.11 | 0.25 | 1.94 | 0.35 | 0.00 | 0.33 | 1.58 | 1.08 | 1.34 | 0.05 | 2.12 | b | 9.20 | ||||||||||||
1943 | 0.12 | 0.08 | 0.00 | 0.18 | 1.90 | 1.68 | 1.79 | 1.30 | 1.79 | 0.20 | 0.00 | 1.22 | 10.26 | |||||||||||||
1944 | 1.25 | 1.38 | 0.00 | 0.00 | 1.01 | 1.39 | 3.07 | 3.09 | 4.42 | 0.62 | 1.40 | 0.70 | 18.33 | |||||||||||||
1945 | 1.04 | 0.00 | 0.29 | 0.97 | 0.60 | 2.05 | 1.92 | 1.65 | 0.55 | 1.55 | 0.00 | 0.08 | 10.70 | |||||||||||||
1946 | 2.02 | a | 0.00 | 0.02 | 0.00 | 0.26 | 0.73 | 1.34 | 0.45 | 2.90 | 1.75 | 0.15 | 0.70 | 10.32 | ||||||||||||
1947 | 1.01 | 0.00 | 1.18 | 0.13 | 1.49 | 0.75 | 0.47 | p | 0.60 | f | 0.87 | 0.04 | f | 1.32 | f | 0.29 | k | 5.43 | e | |||||||
1948 | 0.14 | 0.46 | 0.00 | 0.56 | 3.19 | 0.11 | 3.34 | 3.01 | 0.45 | 0.88 | 0.00 | 0.37 | 12.51 | |||||||||||||
1949 | 3.30 | 0.19 | 0.29 | 1.54 | 0.56 | 2.29 | 1.15 | 1.82 | 4.00 | 0.79 | 0.00 | 0.71 | 16.64 | |||||||||||||
1950 | 0.15 | 0.00 | 0.00 | 0.60 | 2.13 | 2.29 | 2.65 | 1.00 | 1.42 | 0.45 | 0.00 | 0.00 | 10.69 | |||||||||||||
1951 | 0.00 | 0.04 | 0.82 | 0.06 | 1.62 | 0.76 | 1.38 | 1.42 | 0.00 | 0.30 | 0.00 | 0.00 | 6.40 | |||||||||||||
1952 | 0.08 | 0.16 | 0.00 | 1.64 | 1.46 | 1.03 | 2.45 | 0.29 | 0.55 | 0.00 | 0.60 | 0.16 | 8.42 | |||||||||||||
1953 | 0.00 | 0.12 | 0.05 | 0.44 | 0.05 | 0.61 | 0.63 | 3.94 | 0.68 | 2.94 | 0.00 | 0.18 | 9.64 | |||||||||||||
1954 | 0.04 | 0.00 | 0.00 | 2.14 | 2.73 | 0.08 | 0.00 | 1.08 | 0.00 | 2.83 | 0.00 | 0.00 | 8.90 | |||||||||||||
1955 | 0.47 | 0.00 | 0.00 | 0.00 | 2.29 | 1.01 | 2.55 | 0.19 | 0.55 | 0.46 | 0.33 | 0.00 | 7.85 | |||||||||||||
1956 | 0.00 | 0.20 | 0.00 | 0.26 | 2.15 | 0.00 | 0.19 | 0.74 | 0.34 | 0.65 | 0.00 | 0.10 | 4.63 | |||||||||||||
1957 | 0.07 | 1.17 | 0.00 | 0.18 | 0.99 | 0.25 | 0.88 | 0.84 | 0.88 | 2.73 | 1.05 | 0.10 | 9.14 | |||||||||||||
1958 | 1.36 | 0.86 | 0.98 | 0.58 | 1.04 | 0.92 | 3.44 | 4.04 | 6.06 | 1.10 | 0.62 | 0.00 | 21.00 | |||||||||||||
1959 | 0.00 | 0.17 | 0.10 | 0.65 | 2.80 | 0.42 | 1.57 | 0.73 | 0.86 | 1.62 | 0.57 | 0.71 | 10.20 | |||||||||||||
1960 | 0.83 | 0.07 | 0.11 | 0.00 | 0.78 | 0.57 | 5.73 | 1.56 | 0.04 | 6.90 | 0.00 | 1.50 | 18.09 | |||||||||||||
1961 | 0.57 | 0.04 | 1.08 | 0.00 | 1.73 | 1.05 | 0.73 | 0.32 | 0.29 | 0.00 | 0.78 | 0.48 | 7.07 | |||||||||||||
1962 | 0.31 | 0.03 | 0.11 | 1.12 | 0.16 | 1.12 | 2.69 | 0.33 | 3.30 | 1.39 | 0.00 | 0.37 | 10.93 | |||||||||||||
1963 | 0.00 | 0.40 | 0.00 | 0.54 | 2.48 | 2.52 | 1.45 | 2.25 | 0.33 | 0.02 | 0.00 | 0.33 | 10.32 | |||||||||||||
1964 | 0.11 | 0.03 | 1.02 | 0.00 | 0.74 | 0.42 | 0.11 | a | 0.50 | 1.66 | 0.88 | 0.12 | 0.55 | 6.14 | ||||||||||||
1965 | 0.02 | 0.39 | 0.00 | 0.26 | 0.52 | 2.12 | 0.68 | 3.13 | 0.57 | 0.05 | 0.34 | 0.40 | 8.48 | |||||||||||||
1966 | 0.30 | 0.10 | 0.34 | 1.28 | 0.55 | 1.79 | 0.05 | 5.77 | 0.75 | 0.10 | 0.00 | 0.00 | 11.03 | |||||||||||||
1967 | 0.00 | 0.07 | 0.53 | 0.03 | 0.05 | 2.85 | 0.59 | 0.48 | 2.47 | 0.21 | 0.53 | 0.70 | 8.51 | |||||||||||||
1968 | 0.74 | 0.85 | 1.76 | 0.31 | 1.96 | 0.25 | 5.40 | 1.24 | 0.63 | 0.39 | 2.41 | 0.00 | 15.94 | |||||||||||||
1969 | 0.00 | 1.14 | 0.28 | 3.15 | 1.53 | 1.24 | 1.37 | 0.19 | 1.58 | 6.17 | 0.87 | 0.34 | 17.86 | |||||||||||||
1970 | 0.00 | 0.46 | 1.66 | 0.12 | 0.38 | 3.14 | 0.46 | 2.15 | 0.98 | 0.68 | 0.00 | 0.10 | 10.13 | |||||||||||||
1971 | 0.02 | 0.00 | 0.00 | 0.00 | 1.85 | 0.27 | 1.86 | 6.06 | 3.40 | 1.33 | 0.17 | 0.37 | 15.33 | |||||||||||||
1972 | 0.12 | 0.00 | 0.00 | 0.00 | 1.78 | 1.85 | 0.11 | 2.51 | 0.74 | 1.04 | 0.00 | 0.01 | 8.16 | |||||||||||||
1973 | 1.10 | 1.48 | 0.91 | 0.16 | 0.90 | 0.32 | 4.08 | 0.30 | 0.30 | 0.28 | 0.00 | 0.00 | 9.83 | |||||||||||||
1974 | 0.64 | 0.10 | 0.55 | 0.09 | 0.84 | 0.66 | 0.03 | 5.35 | 7.33 | 4.01 | 0.56 | 0.41 | 20.57 | |||||||||||||
1975 | 0.24 | 0.96 | 0.03 | 0.17 | 1.29 | 2.37 | 4.69 | 0.00 | 3.29 | 0.20 | 0.14 | 0.30 | 13.68 | |||||||||||||
1976 | 0.05 | 0.12 | 0.30 | 2.12 | 1.36 | 0.53 | 3.10 | 0.43 | 2.74 | 1.13 | 0.70 | 0.00 | 12.58 | |||||||||||||
1977 | 0.16 | 0.00 | 0.90 | 1.18 | 0.96 | 1.70 | 1.62 | 0.70 | 0.42 | 1.04 | 0.06 | 0.00 | 8.74 | |||||||||||||
1978 | 0.17 | 0.45 | 0.23 | 0.30 | 1.62 | 1.87 | 0.40 | 0.75 | 6.32 | 1.56 | ----- | z | ----- | z | 13.67 | b | ||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.45 | 1.57 | 6.04 | 0.45 | 0.07 | 0.13 | 0.87 | 12.58 | e | |||||||
1980 | 0.80 | 1.46 | 0.02 | 0.44 | 0.98 | 1.64 | 0.01 | 0.54 | 7.64 | 0.05 | 1.33 | 0.32 | 15.23 | |||||||||||||
1981 | 0.94 | 0.61 | 0.64 | 2.99 | 1.41 | 0.74 | 1.40 | 2.25 | 2.08 | 2.55 | 0.02 | 0.05 | 15.68 | |||||||||||||
1982 | 0.29 | 0.06 | 0.31 | 1.07 | 2.54 | 0.84 | 1.28 | 1.04 | 0.75 | 0.13 | 1.16 | 1.83 | 11.30 | |||||||||||||
1983 | 1.55 | 0.61 | 0.04 | 0.32 | 0.66 | 0.82 | 0.26 | 0.10 | 2.00 | 2.88 | 2.96 | 0.19 | 12.39 | |||||||||||||
1984 | 0.12 | 0.00 | 0.00 | 0.00 | 2.83 | 4.03 | 1.28 | 4.90 | 0.79 | 3.02 | 1.04 | 0.85 | 18.86 | |||||||||||||
1985 | 0.52 | 1.17 | 0.59 | 0.60 | 0.70 | 3.68 | 2.31 | 1.04 | 3.53 | 4.71 | 0.83 | 0.00 | 19.68 | |||||||||||||
1986 | 0.34 | 0.18 | 0.11 | 0.56 | 2.16 | 5.86 | 2.18 | 1.98 | 2.08 | 2.62 | 2.43 | 4.35 | 24.85 | |||||||||||||
1987 | 0.20 | 1.24 | 1.03 | 0.74 | 5.18 | 1.14 | 0.48 | 1.29 | 0.88 | 0.49 | 0.10 | 0.64 | 13.41 | |||||||||||||
1988 | 0.00 | 0.10 | 0.14 | 0.21 | 0.75 | 0.48 | 6.83 | 0.98 | 5.28 | 0.00 | 0.05 | 0.26 | 15.08 | |||||||||||||
1989 | 0.13 | 1.37 | 0.29 | 0.18 | 0.74 | 0.76 | 0.29 | 2.49 | 2.66 | 0.01 | 0.00 | 0.05 | 8.97 | |||||||||||||
1990 | 0.27 | 0.56 | 0.76 | 1.24 | 0.34 | 0.03 | 3.25 | 3.15 | 4.85 | 1.00 | 0.92 | 0.41 | 16.78 | |||||||||||||
1991 | 1.54 | 0.32 | 0.06 | 0.00 | 0.39 | 0.91 | 4.60 | 1.54 | 2.92 | 0.08 | 0.43 | 3.25 | 16.04 | |||||||||||||
1992 | 1.13 | 1.12 | 0.25 | 0.35 | 8.01 | 3.08 | 2.61 | 1.91 | 0.80 | 0.05 | 1.07 | 0.35 | 20.73 | |||||||||||||
1993 | 0.96 | 0.60 | 0.82 | 0.59 | 0.35 | 0.17 | 1.56 | 2.38 | 0.74 | 0.33 | 0.19 | 0.00 | 8.69 | |||||||||||||
1994 | 0.15 | 0.02 | 0.05 | 0.28 | 2.45 | ----- | z | 1.65 | ----- | z | 1.42 | ----- | z | 0.37 | 0.00 | 6.39 | c | |||||||||
1995 | 0.45 | 0.39 | a | ----- | z | ----- | z | 3.10 | 1.15 | 0.80 | 0.62 | 1.56 | 0.83 | 0.00 | 0.00 | 8.90 | b | |||||||||
1996 | 0.00 | ----- | z | 0.00 | 0.70 | 0.00 | 3.25 | 2.81 | 4.91 | 0.68 | 0.02 | 0.30 | 0.00 | 12.67 | a | |||||||||||
1997 | 0.00 | 0.62 | 0.00 | 1.67 | 2.26 | d | 2.95 | 3.31 | 0.98 | 4.02 | 0.18 | 0.20 | 0.80 | 16.99 | ||||||||||||
1998 | 0.00 | 0.00 | 0.00 | 0.00 | 0.30 | 0.00 | 0.23 | 1.20 | ----- | z | 4.47 | 0.00 | 1.70 | 7.90 | a | |||||||||||
1999 | 0.00 | 0.00 | 0.55 | 0.22 | 3.90 | 1.56 | 0.20 | 1.08 | 0.55 | 0.00 | 0.00 | 0.00 | 8.06 | |||||||||||||
2000 | 0.40 | 0.01 | 0.70 | 0.06 | 0.00 | 2.55 | 0.00 | 1.01 | e | 0.00 | 2.31 | 0.50 | 0.00 | 7.54 | ||||||||||||
2001 | 0.46 | 0.00 | 0.37 | 0.02 | 0.21 | 0.00 | 0.00 | 0.67 | 0.32 | b | 0.00 | 0.40 | 0.00 | 2.45 | ||||||||||||
2002 | 0.50 | 0.78 | 0.42 | 0.03 | 0.00 | 0.00 | 4.08 | 0.96 | 0.00 | 0.00 | 0.00 | 0.83 | i | 6.77 | a | |||||||||||
2003 | 0.00 | 0.65 | 0.65 | a | 0.00 | 0.33 | 2.80 | 1.30 | 0.12 | 2.15 | 0.00 | 0.80 | 0.00 | a | 8.80 | |||||||||||
2004 | 0.45 | 2.65 | 1.58 | 2.22 | 0.12 | a | 0.93 | 3.65 | 0.36 | 5.77 | a | 3.13 | 4.08 | 0.08 | a | 25.02 | ||||||||||
2005 | 0.00 | 2.72 | a | 0.70 | 0.17 | 1.95 | a | 0.47 | 0.93 | a | 6.07 | d | 0.00 | b | 3.99 | b | 0.00 | 0.02 | 17.02 | |||||||
2006 | 0.00 | 0.54 | 0.86 | b | 0.62 | 0.08 | 1.78 | 1.11 | ----- | z | 3.60 | 2.15 | 0.00 | 0.40 | n | 10.74 | b | |||||||||
2007 | 1.35 | a | 0.00 | 3.31 | 1.00 | 6.54 | 1.33 | 2.30 | 4.15 | 5.23 | 0.00 | 0.52 | 0.00 | 25.73 | ||||||||||||
2008 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.25 | 1.71 | 5.47 | 1.30 | 0.00 | 0.00 | 9.73 | |||||||||||||
2009 | 0.00 | 0.36 | e | 0.10 | 0.10 | 0.98 | 1.21 | 5.06 | d | 1.40 | 1.29 | 0.57 | 0.00 | 0.53 | 11.60 | |||||||||||
2010 | 0.81 | 1.41 | 0.40 | 5.10 | 1.00 | 0.31 | a | 9.48 | 0.72 | 1.24 | 0.00 | 0.00 | 0.00 | 20.47 | ||||||||||||
2011 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.00 | 0.00 | 0.55 | 0.00 | 0.35 | 1.00 | 2.00 | |||||||||||||
2012 | 0.60 | 0.87 | 0.00 | 0.33 | 2.23 | b | 0.00 | 2.30 | 0.60 | 4.37 | a | 0.00 | a | 0.00 | i | 0.00 | c | 11.30 | a | |||||||
2013 | ----- | z | 0.10 | 0.00 | 0.00 | 0.27 | 1.26 | 2.69 | 1.75 | 0.90 | d | 0.52 | 0.00 | 1.22 | o | 7.49 | b | |||||||||
2014 | 0.00 | n | 0.00 | 0.06 | 0.85 | e | 0.00 | j | 1.27 | e | 2.00 | 0.00 | q | 11.38 | l | 0.02 | a | 0.95 | e | 0.04 | f | 5.15 | e | |||
2015 | 0.45 | c | 0.13 | 1.09 | a | 0.50 | 2.30 | i | 2.32 | b | 1.46 | 0.55 | h | 2.08 | 5.13 | S | 1.45 | j | 2.08 | 10.11 | d | |||||
2016 | 0.21 | b | 0.38 | j | 0.07 | 1.39 | g | 1.15 | e | 1.09 | 0.00 | f | 3.81 | b | 1.43 | a | 0.00 | 2.04 | f | 0.70 | e | 8.46 | d | |||
2017 | 1.19 | c | 0.21 | 1.00 | c | 1.22 | b | 1.36 | e | 0.93 | g | 0.19 | b | 3.00 | w | 3.05 | d | 1.53 | c | 0.41 | h | 0.22 | g | 9.75 | d | |
2018 | 0.00 | g | 0.00 | e | 0.10 | g | 0.00 | i | 0.00 | b | 3.25 | c | 1.18 | 1.35 | c | 4.56 | 4.94 | 0.31 | d | 1.02 | a | 16.61 | c | |||
2019 | 0.00 | 0.00 | c | 1.15 | b | 0.94 | d | 1.28 | d | 1.58 | b | 0.64 | 0.00 | e | 3.09 | i | 0.20 | g | 1.00 | c | 0.55 | g | 6.59 | c | ||
2020 | 0.66 | g | 0.70 | e | 2.65 | d | 0.01 | g | 0.45 | i | 0.17 | j | 0.01 | e | 0.09 | 0.70 | c | 0.01 | c | 0.00 | n | 0.06 | f | 4.16 | f | |
2021 | 0.79 | b | 0.00 | 0.00 | b | 1.17 | b | 0.54 | o | 1.92 | h | 1.24 | g | 2.05 | a | 1.21 | f | 0.00 | r | 0.00 | x | 0.01 | o | 4.01 | g | |
2022 | 0.20 | c | 0.01 | c | 0.00 | j | 0.00 | n | 0.01 | q | 4.74 | p | 0.06 | i | 0.16 | j | 2.00 | m | ----- | z | 2.90 | s | ----- | z | 0.21 | j |
2023 | 0.00 | y | 0.00 | k | 0.00 | o | ----- | z | ----- | z | ----- | z | 0.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.41 | 0.44 | 0.44 | 0.64 | 1.38 | 1.32 | 1.77 | 1.82 | 2.09 | 1.29 | 0.46 | 0.49 | 12.77 | |||||||||||||
S.D. | 0.56 | 0.60 | 0.60 | 0.86 | 1.41 | 1.19 | 1.71 | 1.73 | 1.94 | 1.57 | 0.71 | 0.76 | 5.35 | |||||||||||||
SKEW | 2.25 | 1.80 | 2.24 | 2.47 | 2.13 | 1.24 | 1.72 | 1.53 | 1.09 | 1.55 | 2.74 | 2.72 | 0.47 | |||||||||||||
MAX | 3.30 | 2.72 | 3.31 | 5.10 | 8.01 | 5.86 | 9.48 | 8.33 | 7.64 | 6.90 | 4.08 | 4.35 | 25.73 | |||||||||||||
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 | 2.00 | |||||||||||||
YRS | 85 | 85 | 84 | 83 | 84 | 84 | 86 | 81 | 83 | 83 | 80 | 77 | 63 |