YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | 0.22 | 0.15 | 3.90 | a | ----- | z | 1.96 | 0.05 | 2.10 | 2.09 | 10.47 | e | ||||||
1924 | 0.10 | 0.23 | 0.55 | 0.16 | 0.31 | 0.00 | 1.89 | 1.52 | 0.17 | 0.18 | 0.00 | 0.41 | 5.52 | |||||||||||||
1925 | 0.01 | 0.00 | 0.05 | 0.01 | 0.17 | 1.11 | 2.89 | 2.17 | 0.83 | 1.53 | 0.10 | 0.00 | 8.87 | |||||||||||||
1926 | 0.47 | 0.00 | 3.58 | 1.04 | 0.55 | 0.10 | 2.21 | 2.44 | 4.64 | 1.45 | 0.10 | 2.41 | 18.99 | |||||||||||||
1927 | 0.00 | ----- | z | 0.26 | 0.14 | 0.00 | 0.11 | 3.47 | 1.66 | 2.73 | 0.33 | 0.05 | 0.43 | 9.18 | a | |||||||||||
1928 | 0.00 | 1.27 | 0.00 | 0.00 | 2.20 | 0.04 | 2.82 | 0.50 | 0.00 | 2.68 | 0.94 | 0.12 | 10.57 | |||||||||||||
1929 | 0.37 | 0.35 | 0.00 | 0.00 | 0.10 | 0.00 | 3.35 | 3.10 | 3.30 | 1.75 | 0.50 | 0.50 | 13.32 | |||||||||||||
1930 | 0.93 | 0.72 | 1.40 | 0.15 | 0.05 | 0.40 | 4.60 | 3.05 | 0.00 | 0.41 | 1.77 | 1.00 | 14.48 | |||||||||||||
1931 | 0.49 | 3.25 | 0.22 | 1.07 | 1.00 | 0.03 | 1.98 | 5.26 | 2.22 | 0.24 | 1.68 | 1.08 | 18.52 | |||||||||||||
1932 | 0.39 | 0.83 | 0.39 | 0.35 | 0.00 | 0.00 | 2.91 | 0.91 | 0.38 | 0.23 | 0.00 | 1.47 | 7.86 | |||||||||||||
1933 | 1.03 | 1.08 | 0.00 | 0.00 | 0.07 | 1.33 | 1.61 | 0.73 | 0.64 | 1.36 | 0.12 | 0.00 | 7.97 | |||||||||||||
1934 | 0.00 | 0.75 | 0.26 | 0.08 | 0.04 | 0.24 | 1.44 | 4.09 | 1.37 | 0.45 | 0.27 | 1.12 | 10.11 | |||||||||||||
1935 | 0.39 | 0.89 | 0.23 | 0.00 | 0.60 | 0.15 | 1.41 | 2.51 | 0.63 | 0.00 | 0.58 | 0.35 | 7.74 | |||||||||||||
1936 | 0.43 | 0.65 | 0.36 | 0.00 | 0.12 | 0.11 | 1.32 | 0.35 | 0.87 | 0.43 | 1.63 | 0.36 | 6.63 | |||||||||||||
1937 | 0.16 | 0.57 | 1.28 | 0.00 | 0.30 | 2.62 | 0.34 | 0.87 | 1.30 | 2.16 | 0.00 | 0.93 | 10.53 | |||||||||||||
1938 | 0.16 | 0.25 | 1.38 | 0.08 | 0.00 | 1.03 | 1.17 | 0.66 | 0.54 | 0.01 | 0.00 | 1.76 | 7.04 | |||||||||||||
1939 | 0.04 | 0.18 | 0.03 | 0.48 | 0.00 | 0.00 | 1.66 | 0.78 | 1.95 | 0.32 | 1.14 | 0.54 | 7.12 | |||||||||||||
1940 | 0.33 | a | 0.52 | 0.04 | 0.28 | 0.68 | 1.54 | 1.76 | 1.35 | 1.60 | 0.35 | 1.35 | 0.56 | 10.36 | ||||||||||||
1941 | 0.79 | 1.32 | 1.21 | 0.54 | 0.43 | 0.28 | 1.60 | 5.02 | 3.80 | 1.22 | 0.31 | 0.68 | 17.20 | |||||||||||||
1942 | 0.27 | 0.36 | 0.24 | 0.41 | 0.00 | 0.00 | 0.46 | 3.17 | 1.10 | ----- | z | 0.00 | 1.36 | 7.37 | a | |||||||||||
1943 | 0.87 | 0.02 | 0.82 | 0.00 | 0.08 | 1.40 | 1.73 | 3.13 | 3.41 | 0.51 | 0.25 | 0.25 | 12.47 | |||||||||||||
1944 | 0.94 | 0.25 | 0.46 | 0.20 | 0.00 | 0.00 | 1.86 | 4.46 | 1.18 | 1.67 | 0.88 | 0.38 | 12.28 | |||||||||||||
1945 | 0.90 | 0.03 | 0.81 | 0.06 | 0.00 | 0.00 | 0.40 | ----- | z | 0.78 | ----- | z | 0.00 | 0.00 | 2.98 | b | ||||||||||
1946 | 1.13 | 0.00 | 0.44 | 0.39 | 0.00 | 0.05 | ----- | z | 2.79 | 0.10 | 0.00 | ----- | z | ----- | z | 4.90 | c | |||||||||
1947 | ----- | z | 0.07 | 0.55 | 0.21 | ----- | z | ----- | z | 0.67 | l | 1.65 | 1.10 | ----- | z | ----- | z | 0.00 | 3.58 | f | ||||||
1948 | 0.96 | 1.69 | a | 0.18 | 0.03 | 0.00 | 0.09 | 1.43 | 0.44 | b | 2.56 | 0.94 | 0.00 | 1.42 | 9.74 | |||||||||||
1949 | 1.60 | 0.82 | 0.02 | 0.07 | 0.08 | 0.46 | 1.09 | 2.05 | 2.88 | a | 0.70 | 0.00 | 0.73 | 10.50 | ||||||||||||
1950 | 0.07 | 0.25 | 0.06 | 0.08 | 0.00 | 0.40 | 3.03 | 0.00 | 0.62 | 0.23 | 0.00 | 0.00 | 4.74 | |||||||||||||
1951 | 0.61 | 0.08 | 0.39 | 1.59 | 0.00 | 0.00 | r | 2.57 | 1.34 | 0.00 | 1.18 | 0.41 | 0.48 | 8.65 | a | |||||||||||
1952 | 0.06 | 0.14 | 0.31 | b | 0.50 | 0.20 | 3.05 | 0.91 | 1.68 | a | 0.93 | 0.00 | 0.81 | 1.05 | 9.64 | |||||||||||
1953 | 0.00 | 1.37 | 1.29 | 0.00 | 0.00 | 0.12 | 4.48 | 0.30 | 0.18 | 0.00 | 0.15 | 0.00 | 7.89 | |||||||||||||
1954 | 0.81 | 0.11 | 0.22 | 0.00 | 0.08 | 0.32 | 4.00 | 3.61 | 0.34 | 0.09 | 0.00 | 0.00 | 9.58 | |||||||||||||
1955 | 1.46 | 0.17 | 1.01 | 0.00 | 0.00 | 0.23 | 1.46 | 2.63 | 0.00 | 0.06 | 0.00 | 0.33 | 7.35 | |||||||||||||
1956 | 0.20 | 0.52 | 0.00 | 0.00 | 0.01 | 0.32 | 0.77 | 2.59 | 0.00 | 0.20 | 0.00 | 0.12 | 4.73 | |||||||||||||
1957 | 0.64 | 0.00 | 0.44 | 0.00 | ----- | z | 0.45 | 1.87 | 5.61 | 0.29 | 2.75 | 0.71 | 0.00 | 12.76 | a | |||||||||||
1958 | 0.18 | 1.76 | 2.15 | 0.12 | 0.00 | 0.13 | 1.86 | 4.03 | 4.13 | 2.61 | 0.35 | 0.00 | 17.32 | |||||||||||||
1959 | 0.24 | 0.24 | 0.00 | 0.05 | 0.00 | 0.00 | 2.33 | 6.45 | 0.00 | 1.47 | 0.58 | 1.45 | 12.81 | |||||||||||||
1960 | 2.42 | 0.33 | 0.00 | 0.00 | 0.14 | 0.00 | 2.01 | 0.00 | e | 2.66 | 2.32 | 0.00 | 0.88 | 10.76 | ||||||||||||
1961 | 0.57 | 0.21 | 0.02 | 0.00 | 0.00 | 1.50 | 1.78 | 2.79 | b | 1.81 | b | 0.15 | 1.70 | 1.48 | a | 12.01 | ||||||||||
1962 | 2.23 | 0.03 | 0.81 | 0.05 | 0.00 | 0.26 | 3.12 | 0.28 | 2.00 | 0.37 | 0.65 | 1.84 | 11.64 | |||||||||||||
1963 | 0.63 | 0.45 | 0.23 | 0.00 | 0.00 | 0.00 | 2.50 | 4.74 | 1.91 | 0.80 | 0.71 | 0.28 | 12.25 | |||||||||||||
1964 | 0.11 | 0.05 | 0.81 | 0.59 | 0.06 | 0.07 | 2.77 | 1.98 | 2.92 | 0.24 | 0.12 | 0.28 | 10.00 | |||||||||||||
1965 | 0.43 | 0.17 | 0.20 | 0.00 | 0.00 | 0.56 | 3.00 | 2.78 | 1.87 | 0.00 | 0.07 | 3.23 | 12.31 | |||||||||||||
1966 | 0.69 | 0.65 | 0.05 | 0.17 | 0.00 | 0.35 | 2.40 | 1.05 | 1.40 | 0.30 | 0.05 | 0.27 | 7.38 | |||||||||||||
1967 | 0.00 | 0.27 | 0.00 | 0.29 | 0.42 | 1.02 | 3.06 | 0.93 | 3.92 | 0.37 | 0.75 | 3.64 | 14.67 | |||||||||||||
1968 | 0.49 | 1.19 | 1.74 | 0.19 | 0.00 | 0.00 | 2.94 | 1.53 | 0.06 | 0.16 | 1.05 | 0.63 | 9.98 | |||||||||||||
1969 | 0.01 | 0.41 | 0.32 | 0.00 | 0.34 | 0.00 | 2.63 | 2.34 | 0.40 | 0.94 | 0.15 | 0.71 | 8.25 | |||||||||||||
1970 | 0.00 | 0.84 | b | 0.83 | 0.16 | 0.00 | 0.14 | 1.90 | 2.84 | 1.21 | 0.36 | 0.00 | 0.68 | 8.96 | ||||||||||||
1971 | 0.31 | 0.48 | 0.00 | 0.30 | 0.03 | 0.02 | 1.27 | 1.57 | o | ----- | z | ----- | z | 0.20 | 1.97 | 4.58 | c | |||||||||
1972 | 0.02 | 0.00 | 0.00 | 0.00 | 0.18 | 0.78 | 1.70 | 6.37 | a | 2.81 | 4.12 | 0.83 | 0.73 | 17.54 | ||||||||||||
1973 | 0.86 | 1.73 | 1.79 | 0.00 | 0.83 | 0.46 | 1.14 | 1.50 | 0.59 | 0.08 | 0.14 | 0.00 | 9.12 | |||||||||||||
1974 | 0.16 | 0.02 | 0.22 | 0.00 | 0.15 | 0.00 | 2.08 | 1.93 | 1.38 | r | 2.70 | 0.25 | 0.36 | 7.87 | a | |||||||||||
1975 | 0.73 | 0.44 | 0.82 | 0.18 | 0.00 | 0.00 | 1.03 | m | 1.86 | 4.10 | 0.52 | 0.96 | 0.74 | 10.35 | a | |||||||||||
1976 | 0.61 | 0.36 | 0.13 | 0.34 | 0.14 | 0.46 | 2.13 | 0.41 | 1.76 | 2.20 | 0.82 | 0.00 | 9.36 | |||||||||||||
1977 | 1.24 | 0.00 | 0.42 | 0.48 | 0.02 | 0.53 | 2.33 | 4.93 | 0.75 | 1.79 | 0.44 | 0.66 | 13.59 | |||||||||||||
1978 | 0.64 | 1.02 | 0.35 | 0.00 | 0.32 | 0.10 | 1.58 | 0.50 | 0.24 | 1.17 | 0.94 | 1.46 | 8.32 | |||||||||||||
1979 | 0.92 | 0.79 | 0.33 | 0.20 | 0.43 | 1.07 | 1.27 | 1.98 | 0.62 | 0.00 | 0.07 | 0.51 | 8.19 | |||||||||||||
1980 | 0.70 | 1.41 | 0.21 | 0.09 | 0.14 | 0.45 | 1.56 | 2.54 | 0.56 | 0.12 | 0.14 | 0.07 | 7.99 | |||||||||||||
1981 | 1.56 | 0.15 | 0.85 | 0.58 | 0.38 | 1.20 | 2.77 | 1.86 | 0.39 | 0.61 | 1.50 | 0.03 | 11.88 | |||||||||||||
1982 | 0.53 | 0.17 | 0.69 | 0.00 | 0.45 | 0.63 | 1.17 | 1.71 | 1.76 | 0.00 | 1.32 | 2.83 | 11.26 | |||||||||||||
1983 | 0.94 | 0.54 | 0.95 | 0.67 | 0.00 | 0.03 | 3.61 | 0.97 | 4.10 | 2.65 | 2.10 | 0.79 | 17.35 | |||||||||||||
1984 | 0.69 | 0.00 | 0.00 | 0.13 | 0.09 | 0.72 | 2.43 | 2.59 | 0.24 | 2.73 | 0.82 | 2.70 | 13.14 | |||||||||||||
1985 | 1.83 | 0.71 | 0.70 | 0.54 | 0.22 | 1.07 | 2.39 | 1.07 | 3.02 | 3.49 | 1.46 | 0.28 | 16.78 | |||||||||||||
1986 | 0.11 | 0.71 | 0.46 | 0.07 | 0.22 | 0.94 | 1.53 | g | 3.48 | d | 1.00 | 1.17 | 1.64 | 2.48 | 12.28 | a | ||||||||||
1987 | 1.00 | 0.44 | 0.28 | 0.08 | 0.61 | 0.38 | 1.70 | 3.92 | 1.48 | 1.17 | 0.09 | 1.74 | 12.89 | |||||||||||||
1988 | 1.20 | 0.90 | 0.11 | 0.81 | 0.00 | 0.27 | 4.64 | 4.02 | 2.27 | 2.48 | 0.26 | 0.54 | 17.50 | |||||||||||||
1989 | 0.54 | 0.56 | 0.45 | 0.00 | 0.27 | 0.00 | 1.78 | 1.03 | 1.49 | 0.63 | 0.00 | 0.18 | 6.93 | |||||||||||||
1990 | 0.59 | 0.56 | 0.25 | 0.09 | 0.23 | 0.19 | 2.39 | 4.19 | 2.39 | 0.78 | 2.54 | 1.44 | 15.64 | |||||||||||||
1991 | 0.96 | 0.95 | 0.54 | 0.00 | 0.00 | 0.96 | 4.15 | 4.35 | 1.98 | 0.34 | 0.20 | 5.24 | 19.67 | |||||||||||||
1992 | 0.89 | 0.49 | 0.94 | 0.79 | 1.36 | 0.20 | 2.82 | 1.90 | 0.34 | 1.01 | 0.23 | 1.77 | 12.74 | |||||||||||||
1993 | 1.93 | 0.30 | 0.05 | 0.00 | 0.16 | 0.00 | 0.61 | 2.74 | 0.30 | 0.58 | 0.45 | 0.38 | 7.50 | |||||||||||||
1994 | 0.10 | 0.53 | 0.62 | 0.00 | 0.19 | 0.26 | 0.98 | 0.69 | 0.90 | 0.38 | 2.42 | 3.53 | 10.60 | |||||||||||||
1995 | 0.64 | 0.74 | 0.59 | 0.07 | 0.06 | 0.00 | 1.09 | 2.54 | 1.15 | 0.06 | 0.29 | 0.22 | 7.45 | |||||||||||||
1996 | 0.05 | 0.17 | 0.02 | 0.28 | 0.00 | 2.37 | 2.71 | 2.61 | 3.01 | 1.30 | 0.15 | 0.00 | 12.67 | |||||||||||||
1997 | 1.76 | 1.09 | 1.26 | 0.09 | 0.92 | 0.10 | 1.66 | 1.95 | 0.66 | 0.47 | 0.96 | 1.88 | 12.80 | |||||||||||||
1998 | 0.14 | 0.78 | 0.90 | 0.03 | 0.00 | 0.04 | 3.96 | 0.29 | 0.00 | 1.62 | ----- | z | 0.59 | 8.35 | a | |||||||||||
1999 | 0.00 | 0.00 | 0.11 | 0.20 | 0.00 | 0.72 | 4.51 | 0.46 | v | 1.06 | 0.00 | 0.00 | 0.24 | 6.84 | a | |||||||||||
2000 | 0.04 | 0.03 | 0.32 | 0.00 | 0.00 | 2.47 | b | 1.47 | 4.05 | 0.00 | 3.08 | 1.46 | 0.08 | 13.00 | ||||||||||||
2001 | 1.26 | 0.16 | 0.10 | 0.30 | 0.30 | 0.20 | 2.73 | 2.06 | c | 0.55 | 0.08 | 0.08 | a | 0.10 | 7.92 | |||||||||||
2002 | 0.00 | 1.28 | a | 0.00 | 0.00 | 0.01 | 0.00 | 0.54 | 1.89 | 0.85 | 2.14 | 0.18 | 1.26 | 8.15 | ||||||||||||
2003 | 0.02 | 1.29 | 0.15 | 0.00 | 0.00 | 0.00 | 0.39 | 0.27 | 0.22 | 0.22 | 0.87 | 0.63 | o | 3.43 | a | |||||||||||
2004 | 1.16 | 0.95 | 1.33 | 1.66 | 0.07 | 0.09 | 2.02 | 2.27 | 1.39 | 1.12 | a | 1.40 | c | 0.79 | 14.25 | |||||||||||
2005 | 2.51 | 1.65 | 0.48 | 0.11 | 0.50 | 0.00 | 0.31 | 2.04 | 1.30 | 1.90 | 0.00 | 0.03 | 10.83 | |||||||||||||
2006 | 0.20 | a | 0.03 | 0.15 | 0.00 | 0.00 | 0.35 | 3.15 | 3.45 | d | 2.30 | 2.22 | 0.00 | 0.20 | a | 12.05 | ||||||||||
2007 | 1.49 | 0.12 | 0.36 | 0.66 | b | 0.05 | 0.51 | 2.67 | 2.43 | d | 0.83 | a | 0.00 | a | 0.42 | 0.80 | 10.34 | |||||||||
2008 | 0.10 | 0.10 | a | 0.00 | 0.00 | 0.16 | a | 0.16 | 5.85 | 2.92 | c | 0.48 | b | 0.00 | d | 0.46 | b | 0.48 | a | 10.71 | ||||||
2009 | 0.40 | 0.08 | 0.48 | 0.00 | d | 0.62 | 0.94 | c | 0.32 | 1.03 | d | 0.70 | f | 0.95 | d | 1.10 | a | 0.92 | 6.84 | a | ||||||
2010 | 2.48 | b | 1.43 | a | 0.06 | 0.19 | 0.10 | 0.12 | 3.09 | d | 3.01 | c | 0.30 | f | 0.10 | b | 0.00 | a | 0.07 | 10.65 | a | |||||
2011 | ----- | z | ----- | z | 0.00 | ----- | z | 0.00 | ----- | z | 3.03 | q | 1.92 | x | 1.29 | v | ----- | z | 1.03 | x | 3.42 | u | 0.00 | j | ||
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.65 | t | 1.01 | u | 1.20 | w | ----- | z | 0.13 | s | 0.33 | e | 0.33 | k |
2013 | 1.05 | g | 0.20 | g | 0.00 | n | 0.00 | l | 0.00 | p | 0.55 | g | 2.01 | p | 1.11 | l | 0.09 | e | 0.00 | k | 0.24 | c | 0.60 | g | 0.33 | j |
2014 | 0.00 | o | 0.00 | p | 0.60 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.66 | c | 0.38 | 0.61 | 2.65 | i | ||
2015 | 1.08 | 0.20 | a | 0.90 | 0.40 | 0.00 | a | 1.81 | 3.21 | 3.55 | 0.82 | d | 1.12 | a | 0.31 | 0.70 | 14.10 | |||||||||
2016 | 0.76 | 0.29 | 0.00 | 0.34 | d | 0.05 | 1.49 | 1.32 | 2.64 | 1.06 | 0.01 | d | 0.37 | 2.16 | 10.49 | |||||||||||
2017 | 2.26 | 0.38 | 0.01 | 0.00 | b | 0.23 | 1.05 | 2.38 | 1.05 | a | 0.01 | d | 3.60 | 0.18 | 0.87 | 12.02 | ||||||||||
2018 | 0.11 | 1.15 | 0.02 | 0.00 | 0.00 | 1.03 | 2.63 | 0.41 | 0.48 | 2.28 | 0.25 | 1.06 | a | 9.42 | ||||||||||||
2019 | 0.20 | a | 0.26 | 0.43 | 0.30 | 0.08 | 0.26 | 0.69 | 1.21 | 1.91 | 0.73 | 4.06 | 1.40 | b | 11.53 | |||||||||||
2020 | 0.36 | 0.73 | 1.87 | a | 0.00 | 0.00 | 0.00 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.96 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.66 | 0.56 | 0.49 | 0.21 | 0.19 | 0.49 | 2.18 | 2.27 | 1.33 | 0.99 | 0.60 | 0.89 | 11.13 | |||||||||||||
S.D. | 0.63 | 0.55 | 0.58 | 0.32 | 0.33 | 0.65 | 1.13 | 1.48 | 1.17 | 1.01 | 0.72 | 0.96 | 3.44 | |||||||||||||
SKEW | 1.20 | 1.72 | 2.26 | 2.46 | 3.36 | 1.90 | 0.61 | 0.68 | 0.94 | 1.05 | 1.91 | 1.85 | 0.55 | |||||||||||||
MAX | 2.51 | 3.25 | 3.58 | 1.66 | 2.20 | 3.05 | 5.85 | 6.45 | 4.64 | 4.12 | 4.06 | 5.24 | 19.67 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.31 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 4.73 | |||||||||||||
YRS | 92 | 92 | 94 | 93 | 93 | 91 | 89 | 89 | 90 | 90 | 92 | 93 | 76 |