YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | 0.22 | 0.10 | 0.90 | a | ----- | z | 0.60 | 0.05 | 1.15 | 0.56 | ----- | z | ||||||
1924 | 0.10 | 0.18 | 0.22 | 0.11 | 0.31 | 0.00 | 0.55 | 0.70 | 0.16 | 0.17 | 0.00 | 0.35 | 0.70 | |||||||||||||
1925 | 0.01 | 0.00 | 0.05 | 0.01 | 0.13 | 0.83 | 1.90 | 0.84 | 0.40 | 0.57 | 0.10 | 0.00 | 1.90 | |||||||||||||
1926 | 0.25 | 0.00 | 1.16 | 0.50 | 0.45 | 0.07 | 0.95 | 1.70 | 2.70 | 0.60 | 0.10 | 0.60 | 2.70 | |||||||||||||
1927 | 0.00 | ----- | z | 0.14 | 0.10 | 0.00 | 0.08 | 1.50 | 0.82 | 2.15 | 0.23 | 0.03 | 0.29 | ----- | z | |||||||||||
1928 | 0.00 | 1.21 | 0.00 | 0.00 | 1.00 | 0.04 | 1.39 | 0.39 | 0.00 | 2.50 | 0.82 | 0.12 | 2.50 | |||||||||||||
1929 | 0.20 | 0.18 | 0.00 | 0.00 | 0.10 | 0.00 | 1.25 | 1.35 | 1.63 | 0.55 | 0.50 | 0.50 | 1.63 | |||||||||||||
1930 | 0.35 | 0.50 | 0.75 | 0.15 | 0.05 | 0.25 | 1.50 | 1.40 | 0.00 | 0.32 | 0.70 | 0.70 | 1.50 | |||||||||||||
1931 | 0.31 | 0.94 | 0.15 | 0.48 | 0.88 | 0.03 | 0.86 | 1.32 | 0.99 | 0.24 | 0.80 | 0.56 | 1.32 | |||||||||||||
1932 | 0.22 | 0.30 | 0.33 | 0.33 | 0.00 | 0.00 | 0.77 | 0.40 | 0.20 | 0.16 | 0.00 | 0.63 | 0.77 | |||||||||||||
1933 | 0.58 | 0.64 | 0.00 | 0.00 | 0.07 | 0.91 | 0.70 | 0.43 | 0.39 | 0.62 | 0.12 | 0.00 | 0.91 | |||||||||||||
1934 | 0.00 | 0.48 | 0.26 | 0.06 | 0.04 | 0.24 | 0.61 | 1.92 | 1.27 | 0.28 | 0.15 | 1.05 | 1.92 | |||||||||||||
1935 | 0.39 | 0.33 | 0.22 | 0.00 | 0.30 | 0.10 | 1.30 | 1.04 | 0.39 | 0.00 | 0.49 | 0.31 | 1.30 | |||||||||||||
1936 | 0.28 | 0.33 | 0.23 | 0.00 | 0.12 | 0.06 | 0.53 | 0.24 | 0.52 | 0.29 | 0.35 | 0.19 | 0.53 | |||||||||||||
1937 | 0.16 | 0.43 | 0.70 | 0.00 | 0.30 | 1.76 | 0.14 | 0.56 | 0.72 | 0.90 | 0.00 | 0.42 | 1.76 | |||||||||||||
1938 | 0.07 | 0.13 | 1.29 | 0.08 | 0.00 | 0.43 | 0.20 | 0.21 | 0.28 | 0.01 | 0.00 | 1.22 | 1.29 | |||||||||||||
1939 | 0.04 | 0.05 | 0.02 | 0.38 | 0.00 | 0.00 | 0.51 | 0.34 | 0.90 | 0.27 | 0.70 | 0.54 | 0.90 | |||||||||||||
1940 | 0.23 | a | 0.41 | 0.04 | 0.20 | 0.62 | 0.76 | 0.62 | 0.79 | 0.55 | 0.18 | 0.71 | 0.36 | 0.79 | a | |||||||||||
1941 | 0.51 | 0.68 | 0.38 | 0.26 | 0.33 | 0.11 | 0.48 | 1.90 | 1.51 | 0.45 | 0.22 | 0.36 | 1.90 | |||||||||||||
1942 | 0.27 | 0.31 | 0.20 | 0.24 | 0.00 | 0.00 | 0.25 | 0.96 | 0.65 | ----- | z | 0.00 | 0.56 | ----- | z | |||||||||||
1943 | 0.42 | 0.02 | 0.59 | 0.00 | 0.08 | 0.63 | 0.85 | 0.92 | 1.64 | 0.25 | 0.22 | 0.22 | 1.64 | |||||||||||||
1944 | 0.94 | 0.12 | 0.18 | 0.14 | 0.00 | 0.00 | 0.67 | 2.20 | 0.42 | 0.61 | 0.36 | 0.25 | 2.20 | |||||||||||||
1945 | 0.78 | 0.03 | 0.75 | 0.06 | 0.00 | 0.00 | 0.40 | ----- | z | 0.50 | ----- | z | 0.00 | 0.00 | ----- | z | ||||||||||
1946 | 0.60 | 0.00 | 0.20 | 0.27 | 0.00 | 0.05 | ----- | z | 0.87 | 0.10 | 0.00 | ----- | z | ----- | z | ----- | z | |||||||||
1947 | ----- | z | 0.07 | 0.30 | 0.21 | ----- | z | ----- | z | 0.67 | l | 0.85 | 0.97 | ----- | z | ----- | z | 0.00 | ----- | z | ||||||
1948 | 0.50 | 0.76 | a | 0.15 | 0.03 | 0.00 | 0.04 | 0.62 | 0.26 | b | 1.26 | 0.33 | 0.00 | 1.27 | 1.27 | c | ||||||||||
1949 | 0.39 | 0.50 | 0.02 | 0.07 | 0.08 | 0.32 | 0.44 | 1.11 | 1.18 | a | 0.70 | 0.00 | 0.61 | 1.18 | a | |||||||||||
1950 | 0.04 | 0.13 | 0.06 | 0.08 | 0.00 | 0.40 | 1.40 | 0.00 | 0.40 | 0.10 | 0.00 | 0.00 | 1.40 | |||||||||||||
1951 | 0.22 | 0.08 | 0.25 | 0.79 | 0.00 | 0.00 | r | 1.02 | 0.71 | 0.00 | 0.73 | 0.21 | 0.20 | 1.02 | r | |||||||||||
1952 | 0.06 | 0.14 | 0.18 | b | 0.28 | 0.16 | 2.94 | 0.63 | 0.49 | a | 0.69 | 0.00 | 0.70 | 0.49 | 2.94 | c | ||||||||||
1953 | 0.00 | 1.00 | 1.17 | 0.00 | 0.00 | 0.12 | 0.91 | 0.30 | 0.18 | 0.00 | 0.15 | 0.00 | 1.17 | |||||||||||||
1954 | 0.32 | 0.11 | 0.11 | 0.00 | 0.08 | 0.22 | 0.87 | 1.20 | 0.17 | 0.04 | 0.00 | 0.00 | 1.20 | |||||||||||||
1955 | 0.48 | 0.17 | 0.59 | 0.00 | 0.00 | 0.18 | 0.57 | 0.72 | 0.00 | 0.06 | 0.00 | 0.17 | 0.72 | |||||||||||||
1956 | 0.15 | 0.30 | 0.00 | 0.00 | 0.01 | 0.32 | 0.20 | 0.74 | 0.00 | 0.15 | 0.00 | 0.12 | 0.74 | |||||||||||||
1957 | 0.30 | 0.00 | 0.35 | 0.00 | ----- | z | 0.45 | 1.57 | 1.86 | 0.13 | 0.90 | 0.45 | 0.00 | ----- | z | |||||||||||
1958 | 0.12 | 0.76 | 0.45 | 0.12 | 0.00 | 0.13 | 1.14 | 1.21 | 1.40 | 1.40 | 0.25 | 0.00 | 1.40 | |||||||||||||
1959 | 0.24 | 0.24 | 0.00 | 0.05 | 0.00 | 0.00 | 0.89 | 1.60 | 0.00 | 0.79 | 0.31 | 0.79 | 1.60 | |||||||||||||
1960 | 1.44 | 0.33 | 0.00 | 0.00 | 0.14 | 0.00 | 0.45 | 0.00 | e | 1.40 | 0.87 | 0.00 | 0.66 | 1.44 | e | |||||||||||
1961 | 0.32 | 0.21 | 0.02 | 0.00 | 0.00 | 1.48 | 0.50 | 1.17 | b | 1.40 | b | 0.10 | 0.42 | 0.33 | a | 1.48 | e | |||||||||
1962 | 0.72 | 0.03 | 0.56 | 0.05 | 0.00 | 0.26 | 0.84 | 0.28 | 0.63 | 0.14 | 0.37 | 0.68 | 0.84 | |||||||||||||
1963 | 0.34 | 0.23 | 0.13 | 0.00 | 0.00 | 0.00 | 0.54 | 1.16 | 1.23 | 0.45 | 0.38 | 0.24 | 1.23 | |||||||||||||
1964 | 0.08 | 0.05 | 0.66 | 0.54 | 0.06 | 0.07 | 0.73 | 0.80 | 1.21 | 0.14 | 0.05 | 0.14 | 1.21 | |||||||||||||
1965 | 0.22 | 0.13 | 0.17 | 0.00 | 0.00 | 0.18 | 0.79 | 0.80 | 0.70 | 0.00 | 0.07 | 0.66 | 0.80 | |||||||||||||
1966 | 0.32 | 0.50 | 0.05 | 0.17 | 0.00 | 0.25 | 0.78 | 0.40 | 0.40 | 0.28 | 0.03 | 0.27 | 0.78 | |||||||||||||
1967 | 0.00 | 0.20 | 0.00 | 0.10 | 0.42 | 0.46 | 1.48 | 0.43 | 1.98 | 0.20 | 0.51 | 1.32 | 1.98 | |||||||||||||
1968 | 0.41 | 0.70 | 0.55 | 0.17 | 0.00 | 0.00 | 1.70 | 0.45 | 0.03 | 0.14 | 0.50 | 0.36 | 1.70 | |||||||||||||
1969 | 0.01 | 0.37 | 0.27 | 0.00 | 0.17 | 0.00 | 1.05 | 1.30 | 0.20 | 0.75 | 0.10 | 0.25 | 1.30 | |||||||||||||
1970 | 0.00 | 0.58 | b | 0.34 | 0.06 | 0.00 | 0.09 | 0.73 | 1.17 | 0.33 | 0.15 | 0.00 | 0.50 | 1.17 | b | |||||||||||
1971 | 0.31 | 0.38 | 0.00 | 0.20 | 0.03 | 0.02 | 0.83 | 0.85 | o | ----- | z | ----- | z | 0.20 | 0.82 | ----- | z | |||||||||
1972 | 0.02 | 0.00 | 0.00 | 0.00 | 0.18 | 0.34 | 1.18 | 1.50 | a | 1.78 | 1.34 | 0.38 | 0.34 | 1.78 | a | |||||||||||
1973 | 0.32 | 0.67 | 0.43 | 0.00 | 0.27 | 0.36 | 0.80 | 0.90 | 0.54 | 0.08 | 0.09 | 0.00 | 0.90 | |||||||||||||
1974 | 0.11 | 0.02 | 0.13 | 0.00 | 0.15 | 0.00 | 0.53 | 0.55 | 0.70 | r | 0.66 | 0.10 | 0.12 | 0.70 | r | |||||||||||
1975 | 0.25 | 0.32 | 0.32 | 0.10 | 0.00 | 0.00 | 0.32 | m | 1.64 | 2.18 | 0.51 | 0.68 | 0.72 | 2.18 | m | |||||||||||
1976 | 0.46 | 0.12 | 0.13 | 0.30 | 0.14 | 0.46 | 0.78 | 0.22 | 0.48 | 0.90 | 0.38 | 0.00 | 0.90 | |||||||||||||
1977 | 0.55 | 0.00 | 0.25 | 0.25 | 0.02 | 0.16 | 1.12 | 4.07 | 0.45 | 0.95 | 0.40 | 0.28 | 4.07 | |||||||||||||
1978 | 0.27 | 0.53 | 0.21 | 0.00 | 0.20 | 0.07 | 0.76 | 0.30 | 0.14 | 0.35 | 0.33 | 0.42 | 0.76 | |||||||||||||
1979 | 0.32 | 0.62 | 0.18 | 0.13 | 0.14 | 0.99 | 0.86 | 1.41 | 0.32 | 0.00 | 0.05 | 0.35 | 1.41 | |||||||||||||
1980 | 0.27 | 0.86 | 0.17 | 0.09 | 0.11 | 0.40 | 0.74 | 1.02 | 0.28 | 0.12 | 0.14 | 0.07 | 1.02 | |||||||||||||
1981 | 0.68 | 0.11 | 0.31 | 0.31 | 0.31 | 0.90 | 0.94 | 1.43 | 0.16 | 0.27 | 1.18 | 0.03 | 1.43 | |||||||||||||
1982 | 0.27 | 0.04 | 0.65 | 0.00 | 0.33 | 0.63 | 0.38 | 0.77 | 0.72 | 0.00 | 0.51 | 0.77 | 0.77 | |||||||||||||
1983 | 0.68 | 0.23 | 0.28 | 0.38 | 0.00 | 0.03 | 1.19 | 0.56 | 1.70 | 1.45 | 0.83 | 0.50 | 1.70 | |||||||||||||
1984 | 0.40 | 0.00 | 0.00 | 0.13 | 0.06 | 0.54 | 0.76 | 1.02 | 0.19 | 0.58 | 0.50 | 0.62 | 1.02 | |||||||||||||
1985 | 0.42 | 0.17 | 0.48 | 0.32 | 0.22 | 1.02 | 0.55 | 0.42 | 1.40 | 2.03 | 0.61 | 0.28 | 2.03 | |||||||||||||
1986 | 0.07 | 0.32 | 0.38 | 0.05 | 0.16 | 0.38 | 0.63 | g | 1.99 | d | 0.72 | 0.46 | 0.84 | 0.96 | 1.99 | k | ||||||||||
1987 | 0.75 | 0.38 | 0.15 | 0.02 | 0.18 | 0.16 | 1.26 | 1.29 | 0.50 | 0.91 | 0.04 | 0.62 | 1.29 | |||||||||||||
1988 | 0.58 | 0.68 | 0.06 | 0.45 | 0.00 | 0.18 | 1.58 | 1.57 | 1.58 | 1.40 | 0.16 | 0.28 | 1.58 | |||||||||||||
1989 | 0.48 | 0.45 | 0.42 | 0.00 | 0.22 | 0.00 | 0.43 | 0.49 | 0.74 | 0.42 | 0.00 | 0.18 | 0.74 | |||||||||||||
1990 | 0.32 | 0.31 | 0.25 | 0.09 | 0.23 | 0.08 | 1.40 | 1.51 | 1.05 | 0.72 | 1.08 | 0.73 | 1.51 | |||||||||||||
1991 | 0.51 | 0.54 | 0.16 | 0.00 | 0.00 | 0.30 | 1.25 | 2.27 | 0.95 | 0.14 | 0.18 | 1.89 | 2.27 | |||||||||||||
1992 | 0.24 | 0.24 | 0.29 | 0.62 | 0.32 | 0.14 | 0.70 | 0.53 | 0.18 | 0.35 | 0.21 | 0.83 | 0.83 | |||||||||||||
1993 | 0.46 | 0.13 | 0.03 | 0.00 | 0.05 | 0.00 | 0.30 | 0.48 | 0.20 | 0.28 | 0.43 | 0.21 | 0.48 | |||||||||||||
1994 | 0.07 | 0.44 | 0.24 | 0.00 | 0.13 | 0.12 | 0.50 | 0.32 | 0.62 | 0.24 | 1.39 | 1.03 | 1.39 | |||||||||||||
1995 | 0.30 | 0.28 | 0.32 | 0.07 | 0.06 | 0.00 | 0.43 | 0.70 | 0.92 | 0.06 | 0.28 | 0.10 | 0.92 | |||||||||||||
1996 | 0.03 | 0.08 | 0.02 | 0.28 | 0.00 | 1.78 | 0.98 | 1.10 | 1.24 | 0.67 | 0.15 | 0.00 | 1.78 | |||||||||||||
1997 | 0.58 | 0.62 | 0.73 | 0.04 | 0.47 | 0.08 | 0.74 | 0.53 | 0.25 | 0.22 | 0.52 | 0.60 | 0.74 | |||||||||||||
1998 | 0.14 | 0.38 | 0.40 | 0.03 | 0.00 | 0.04 | 1.50 | 0.11 | 0.00 | 1.62 | ----- | z | 0.30 | ----- | z | |||||||||||
1999 | 0.00 | 0.00 | 0.10 | 0.10 | 0.00 | 0.45 | 1.49 | 0.30 | v | 0.60 | 0.00 | 0.00 | 0.24 | 1.49 | v | |||||||||||
2000 | 0.04 | 0.03 | 0.25 | 0.00 | 0.00 | 1.32 | b | 0.50 | 1.71 | 0.00 | 1.12 | 0.65 | 0.07 | 1.71 | b | |||||||||||
2001 | 0.51 | 0.11 | 0.10 | 0.30 | 0.23 | 0.20 | 0.65 | 0.54 | c | 0.55 | 0.08 | 0.08 | a | 0.10 | 0.65 | d | ||||||||||
2002 | 0.00 | 0.90 | a | 0.00 | 0.00 | 0.01 | 0.00 | 0.20 | 0.58 | 0.36 | 1.98 | 0.12 | 0.34 | 1.98 | a | |||||||||||
2003 | 0.02 | 0.45 | 0.12 | 0.00 | 0.00 | 0.00 | 0.24 | 0.13 | 0.16 | 0.10 | 0.70 | 0.43 | o | 0.70 | o | |||||||||||
2004 | 0.70 | 0.49 | 0.65 | 0.73 | 0.07 | 0.09 | 0.80 | 0.61 | 0.58 | 0.56 | a | 0.48 | c | 0.39 | 0.80 | d | ||||||||||
2005 | 0.54 | 0.40 | 0.35 | 0.11 | 0.48 | 0.00 | 0.21 | 1.17 | 0.58 | 0.65 | 0.00 | 0.03 | 1.17 | |||||||||||||
2006 | 0.20 | a | 0.02 | 0.15 | 0.00 | 0.00 | 0.14 | 0.90 | 1.86 | d | 0.65 | 0.56 | 0.00 | 0.15 | a | 1.86 | f | |||||||||
2007 | 0.74 | 0.07 | 0.28 | 0.44 | b | 0.05 | 0.45 | 0.77 | 0.67 | d | 0.63 | a | 0.00 | a | 0.39 | 0.50 | 0.77 | h | ||||||||
2008 | 0.08 | 0.10 | a | 0.00 | 0.00 | 0.10 | a | 0.16 | 2.05 | 1.36 | c | 0.38 | b | 0.00 | d | 0.46 | b | 0.29 | a | 2.05 | n | |||||
2009 | 0.17 | 0.04 | 0.48 | 0.00 | d | 0.30 | 0.47 | c | 0.15 | 0.38 | d | 0.38 | f | 0.50 | d | 0.78 | a | 0.60 | 0.78 | v | ||||||
2010 | 1.50 | b | 0.88 | a | 0.06 | 0.18 | 0.10 | 0.12 | 1.35 | d | 0.95 | c | 0.20 | f | 0.10 | b | 0.00 | a | 0.04 | 1.50 | s | |||||
2011 | ----- | z | ----- | z | 0.00 | ----- | z | 0.00 | ----- | z | 1.59 | q | 0.80 | x | 0.39 | v | ----- | z | 0.68 | x | 1.99 | u | ----- | z | ||
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.15 | t | 0.33 | u | 0.50 | w | ----- | z | 0.13 | s | 0.26 | e | ----- | z |
2013 | 0.50 | g | 0.10 | g | 0.00 | n | 0.00 | l | 0.00 | p | 0.55 | g | 1.30 | p | 0.57 | l | 0.06 | e | 0.00 | k | 0.10 | c | 0.42 | g | ----- | z |
2014 | 0.00 | o | 0.00 | p | 0.57 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.92 | c | 0.32 | 0.28 | ----- | z | ||
2015 | 0.38 | 0.10 | a | 0.32 | 0.30 | 0.00 | a | 1.20 | 0.70 | 1.20 | 0.40 | d | 0.80 | a | 0.24 | 0.54 | 1.20 | g | ||||||||
2016 | 0.46 | 0.20 | 0.00 | 0.32 | d | 0.05 | 0.60 | 0.55 | 0.83 | 0.46 | 0.01 | d | 0.21 | 0.62 | 0.83 | h | ||||||||||
2017 | 1.50 | 0.22 | 0.01 | 0.00 | b | 0.17 | 0.82 | 0.66 | 0.63 | a | 0.01 | d | 3.50 | 0.18 | 0.40 | 3.50 | g | |||||||||
2018 | 0.07 | 0.80 | 0.02 | 0.00 | 0.00 | 0.52 | 0.82 | 0.17 | 0.30 | 0.55 | 0.25 | 0.42 | a | 0.82 | a | |||||||||||
2019 | 0.13 | a | 0.24 | 0.22 | 0.30 | 0.08 | 0.18 | 0.28 | 0.40 | 0.80 | 0.58 | 2.53 | 1.11 | b | 2.53 | c | ||||||||||
2020 | 0.17 | 0.30 | 1.35 | a | 0.00 | 0.00 | 0.00 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.33 | 0.32 | 0.27 | 0.14 | 0.13 | 0.33 | 0.83 | 0.92 | 0.67 | 0.52 | 0.34 | 0.41 | 1.38 | |||||||||||||
S.D. | 0.31 | 0.28 | 0.29 | 0.18 | 0.18 | 0.48 | 0.42 | 0.63 | 0.59 | 0.59 | 0.39 | 0.35 | 0.64 | |||||||||||||
SKEW | 1.76 | 0.95 | 1.75 | 1.58 | 2.42 | 2.73 | 0.65 | 1.61 | 1.14 | 2.35 | 2.46 | 1.31 | 1.44 | |||||||||||||
MAX | 1.50 | 1.21 | 1.35 | 0.79 | 1.00 | 2.94 | 2.05 | 4.07 | 2.70 | 3.50 | 2.53 | 1.89 | 4.07 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.48 | |||||||||||||
YRS | 92 | 92 | 94 | 93 | 93 | 91 | 89 | 89 | 90 | 90 | 92 | 93 | 68 |