YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | 0.14 | 0.00 | ----- | z | 0.00 | 0.00 | 1.06 | 0.00 | 0.17 | 0.38 | ----- | z | ||||||||
1941 | 0.50 | 0.59 | 0.71 | 0.98 | 0.00 | 0.15 | 0.28 | 0.47 | 0.00 | 0.61 | 0.11 | 0.25 | 0.98 | |||||||||||||
1942 | 0.00 | 0.31 | 0.33 | 0.21 | 0.00 | 0.00 | 0.00 | 0.37 | 0.00 | 0.11 | 0.00 | 0.11 | 0.37 | |||||||||||||
1943 | 0.76 | 0.20 | 0.32 | 0.53 | 0.00 | 0.00 | 0.00 | 0.02 | 0.16 | 0.04 | 0.00 | 0.68 | 0.76 | |||||||||||||
1944 | 0.20 | 0.29 | 0.00 | 0.18 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | ----- | z | ----- | z | |||||||||||
1945 | 0.19 | 0.10 | 0.57 | 0.07 | ----- | z | 0.09 | 0.66 | 0.70 | 0.00 | 1.00 | 0.00 | 0.20 | a | ----- | z | ||||||||||
1946 | 0.20 | 0.00 | 0.20 | 0.07 | 0.12 | 0.00 | 0.23 | 0.67 | 0.62 | 0.45 | 0.30 | 0.21 | 0.67 | |||||||||||||
1947 | 0.17 | 0.00 | 0.50 | 0.00 | 0.18 | 0.00 | 0.00 | 0.08 | 0.00 | 0.10 | 0.05 | 1.64 | 1.64 | |||||||||||||
1948 | 0.00 | 0.15 | 0.03 | 0.22 | 0.00 | 0.00 | 0.00 | 0.00 | 0.36 | 0.00 | 0.00 | 0.22 | 0.36 | |||||||||||||
1949 | ----- | z | 1.45 | 0.57 | 0.00 | 0.31 | 0.18 | 0.00 | 0.46 | 1.28 | 0.23 | 0.00 | 0.10 | ----- | z | |||||||||||
1950 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | a | 0.00 | 0.53 | 0.00 | 0.16 | 0.00 | 0.00 | 0.00 | 0.53 | a | |||||||||||
1951 | 0.42 | 0.03 | 0.00 | 0.11 | 0.09 | a | 0.00 | 0.03 | 0.03 | 0.57 | 0.49 | 0.15 | 2.05 | 2.05 | a | |||||||||||
1952 | 1.02 | 0.00 | 0.72 | 0.37 | 0.00 | 0.00 | 1.00 | 0.03 | 0.64 | 0.00 | 0.46 | 0.29 | 1.02 | |||||||||||||
1953 | 0.00 | 0.00 | 0.19 | 0.05 | 0.03 | 0.00 | 0.18 | 0.00 | 0.00 | 0.36 | 0.00 | 0.04 | 0.36 | |||||||||||||
1954 | 0.91 | 0.00 | 0.30 | 0.04 | 0.00 | 0.00 | 0.09 | 0.00 | 0.57 | 0.13 | 0.14 | 0.10 | 0.91 | |||||||||||||
1955 | 0.79 | 0.25 | 0.00 | 0.01 | 0.08 | 0.16 | 0.31 | 0.71 | 0.00 | 0.00 | 0.10 | 0.00 | 0.79 | |||||||||||||
1956 | 0.09 | 0.05 | 0.00 | 0.10 | 0.00 | 0.00 | 0.29 | 0.00 | 0.00 | 0.08 | 0.00 | 0.00 | 0.29 | |||||||||||||
1957 | 0.55 | 0.14 | 0.07 | 0.52 | 0.11 | 0.17 | 0.15 | 1.44 | 0.00 | 0.22 | 0.85 | 0.18 | 1.44 | |||||||||||||
1958 | 0.34 | 0.34 | 0.32 | 0.50 | 0.28 | 0.00 | 0.05 | 0.09 | 0.21 | 1.03 | 1.00 | 0.00 | 1.03 | |||||||||||||
1959 | 0.04 | 0.37 | 0.00 | 0.00 | 0.06 | 0.00 | 0.40 | 0.46 | 0.05 | 0.12 | 0.97 | 0.47 | 0.97 | |||||||||||||
1960 | 0.40 | 0.35 | 0.08 | 0.04 | 0.02 | 0.00 | 0.00 | 0.00 | 0.65 | 0.75 | 0.98 | 0.00 | 0.98 | |||||||||||||
1961 | 0.10 | 0.00 | 0.55 | 0.05 | 0.06 | 0.00 | 0.39 | 1.14 | 0.03 | 0.15 | 0.20 | 0.23 | 1.14 | |||||||||||||
1962 | 0.05 | 0.45 | 0.02 | 0.00 | 0.03 | 0.02 | 0.02 | 0.00 | 0.01 | 0.37 | 0.00 | 0.23 | 0.45 | |||||||||||||
1963 | 0.10 | 0.28 | 0.35 | 0.03 | 0.00 | 0.00 | 0.00 | 0.04 | 1.31 | 0.33 | 0.20 | 0.00 | 1.31 | |||||||||||||
1964 | 0.00 | 0.00 | 0.08 | 0.32 | 0.20 | 0.08 | 0.00 | 0.05 | 0.00 | 0.00 | 0.10 | 0.00 | 0.32 | |||||||||||||
1965 | 0.06 | 0.00 | 0.22 | 0.66 | 0.23 | 0.02 | 0.01 | 1.13 | 0.00 | 0.00 | 0.37 | 0.32 | 1.13 | |||||||||||||
1966 | 0.00 | 0.15 | 0.01 | 0.05 | 0.00 | 0.00 | 0.06 | 0.09 | 1.37 | 0.19 | 0.10 | 0.12 | 1.37 | |||||||||||||
1967 | 0.22 | 0.00 | 0.00 | 0.15 | 0.12 | 0.95 | 0.23 | 0.11 | 0.18 | 0.00 | 0.63 | 0.54 | 0.95 | |||||||||||||
1968 | 0.00 | 0.26 | 0.05 | 0.08 | 0.02 | 0.17 | 0.12 | 0.34 | 0.00 | 0.19 | 0.04 | 0.04 | 0.34 | |||||||||||||
1969 | 0.65 | 0.32 | 0.87 | 0.00 | 0.36 | 1.55 | 0.42 | 0.06 | 0.00 | 0.10 | 0.04 | 0.00 | 1.55 | |||||||||||||
1970 | 0.01 | 0.29 | 0.24 | 0.03 | 0.00 | 0.00 | 0.22 | 0.29 | 0.00 | 0.00 | 0.31 | 0.26 | 0.31 | |||||||||||||
1971 | 0.01 | 0.06 | 0.10 | 0.01 | 0.23 | 0.00 | 0.00 | 0.14 | 0.00 | 0.08 | 0.00 | 0.20 | 0.23 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.10 | 0.05 | 0.09 | 1.50 | 0.79 | 0.24 | 0.81 | 0.47 | 0.50 | 1.50 | |||||||||||||
1973 | 0.14 | 0.39 | 0.55 | 0.39 | 0.08 | 0.15 | 0.00 | 0.17 | 0.00 | 0.11 | 0.11 | 0.08 | 0.55 | |||||||||||||
1974 | 0.32 | 0.08 | 0.55 | 0.03 | 0.00 | 0.00 | 0.13 | 0.61 | 0.00 | 0.75 | 0.09 | 0.21 | 0.75 | |||||||||||||
1975 | 0.08 | 0.32 | 0.71 | 0.35 | 0.16 | 0.09 | 0.77 | 0.85 | 0.21 | ----- | z | 0.00 | 0.08 | ----- | z | |||||||||||
1976 | 0.00 | 1.03 | 0.00 | 0.27 | 0.67 | 0.00 | 0.08 | 0.00 | 0.95 | 0.63 | 0.00 | 0.00 | 1.03 | |||||||||||||
1977 | 0.34 | 0.00 | 0.00 | 0.00 | 0.42 | 0.17 | 0.01 | 0.44 | 0.28 | 0.06 | 0.03 | 0.57 | 0.57 | |||||||||||||
1978 | 0.31 | 0.55 | a | 0.56 | 0.50 | 0.83 | 0.00 | 0.00 | 0.04 | 0.10 | 0.77 | 0.36 | 0.18 | 0.83 | a | |||||||||||
1979 | 0.23 | 0.08 | 0.62 | 0.00 | 0.00 | a | 0.00 | 0.00 | b | ----- | z | 0.00 | ----- | z | 0.00 | 0.19 | ----- | z | ||||||||
1980 | 0.18 | b | 0.78 | a | 0.37 | 0.70 | 0.04 | 0.01 | 0.35 | 0.00 | 0.30 | 0.08 | 0.00 | 0.00 | 0.78 | c | ||||||||||
1981 | 0.01 | 0.02 | 0.93 | 0.01 | 0.25 | 0.00 | 0.00 | 0.16 | 0.06 | 0.21 | 0.40 | 0.00 | 0.93 | |||||||||||||
1982 | 0.03 | 0.53 | 0.60 | 0.00 | 0.45 | 0.05 | 0.08 | 0.41 | 0.64 | 0.00 | 0.47 | 0.31 | 0.64 | |||||||||||||
1983 | 0.36 | 0.06 | 0.88 | 0.53 | 0.05 | 0.00 | 0.07 | 1.02 | 0.34 | 0.08 | 0.27 | 0.29 | j | 1.02 | j | |||||||||||
1984 | 0.02 | 0.07 | 0.24 | 0.06 | 0.01 | 0.00 | 1.72 | 0.60 | b | 0.73 | b | 0.00 | a | 1.48 | 0.55 | a | 1.72 | f | ||||||||
1985 | 0.20 | 0.00 | 0.17 | 0.06 | 0.06 | 0.18 | 0.12 | 0.00 | 0.62 | 0.11 | 0.10 | 0.05 | 0.62 | |||||||||||||
1986 | 0.15 | 0.05 | 0.27 | 0.11 | 0.16 | 0.50 | 0.87 | 0.22 | 0.35 | 0.15 | 0.54 | 0.46 | 0.87 | |||||||||||||
1987 | 0.26 | 0.26 | 0.57 | 0.45 | 1.10 | 0.14 | 0.28 | 0.00 | 0.00 | 0.20 | 0.57 | 0.30 | 1.10 | |||||||||||||
1988 | 0.68 | 0.11 | 0.00 | 0.38 | 0.00 | 0.10 | 0.10 | 0.21 | 0.00 | 0.00 | 0.00 | 0.04 | 0.68 | |||||||||||||
1989 | 0.44 | 0.04 | 0.05 | 0.00 | 0.06 | 0.05 | 0.00 | 0.48 | 0.00 | 0.00 | 0.00 | 0.00 | 0.48 | |||||||||||||
1990 | 1.11 | 0.05 | 0.07 | 0.05 | 0.17 | 0.28 | 0.00 | 0.00 | 0.47 | 0.00 | 0.08 | 0.00 | 1.11 | |||||||||||||
1991 | 0.00 | 0.63 | 0.48 | 0.00 | 0.26 | 0.14 | 0.35 | 0.08 | 0.06 | 0.00 | 0.08 | 0.18 | 0.63 | |||||||||||||
1992 | 0.55 | 0.38 | 1.00 | a | 0.00 | 0.14 | 0.00 | 0.21 | 0.00 | 0.00 | ----- | z | 0.00 | ----- | z | ----- | z | |||||||||
1993 | 0.80 | 0.90 | w | 0.17 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.56 | 0.37 | 0.90 | w | |||||||||||
1994 | 0.08 | 0.25 | 0.30 | 0.00 | 0.05 | d | 0.00 | 0.17 | 0.17 | ----- | z | ----- | z | 0.43 | y | 1.40 | ----- | z | ||||||||
1995 | 0.65 | 0.13 | 0.20 | c | ----- | z | ----- | z | 0.47 | 0.04 | 0.24 | 0.00 | 0.00 | 0.00 | 0.07 | ----- | z | |||||||||
1996 | 0.11 | 0.09 | a | 0.30 | 0.00 | ----- | z | 0.00 | ----- | z | 0.03 | 0.00 | 0.33 | a | 0.55 | 0.20 | ----- | z | ||||||||
1997 | 0.02 | c | 0.21 | 0.00 | 0.13 | 0.10 | 0.08 | ----- | z | 0.21 | ----- | z | 0.06 | 0.09 | 0.24 | ----- | z | |||||||||
1998 | 0.06 | 0.51 | 1.80 | 0.12 | 0.13 | 0.51 | 0.49 | 0.22 | 1.01 | 0.22 | 0.12 | 0.03 | 1.80 | |||||||||||||
1999 | 0.06 | 0.14 | 0.02 | c | 0.55 | a | 0.18 | 0.13 | 0.52 | 0.01 | 0.09 | 0.00 | 0.00 | 0.00 | 0.55 | d | ||||||||||
2000 | 0.04 | 0.96 | 0.45 | 0.00 | 0.00 | 0.06 | 0.00 | 0.33 | 0.00 | 0.15 | 0.00 | 0.00 | 0.96 | |||||||||||||
2001 | 0.51 | 0.62 | 0.13 | 0.10 | 0.11 | 0.00 | 0.12 | 0.12 | 0.00 | 0.00 | 0.06 | 0.00 | 0.62 | |||||||||||||
2002 | 0.00 | 0.00 | 0.09 | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 0.02 | 0.10 | 0.02 | 0.18 | 0.18 | |||||||||||||
2003 | 0.03 | 0.51 | 0.18 | 0.64 | 0.00 | 0.00 | 0.25 | 0.02 | b | 0.00 | 0.00 | 0.67 | 0.75 | 0.75 | b | |||||||||||
2004 | 0.26 | 0.81 | 0.16 | 0.40 | 0.00 | 0.00 | 0.11 | 0.05 | 0.12 | a | 0.38 | 0.59 | b | 1.26 | 1.26 | c | ||||||||||
2005 | 1.15 | 1.90 | 0.10 | a | 0.16 | 0.05 | 0.04 | 0.25 | b | 1.41 | 0.26 | 1.19 | 0.00 | 0.00 | 1.90 | c | ||||||||||
2006 | 0.00 | ----- | z | 0.31 | j | 0.00 | 0.09 | 0.06 | 1.17 | 0.00 | 0.04 | 0.42 | 0.00 | 0.09 | ----- | z | ||||||||||
2007 | 0.10 | 0.07 | 0.00 | 0.14 | 0.00 | 0.00 | 0.52 | 0.12 | 0.78 | 0.00 | 0.00 | 0.42 | 0.78 | |||||||||||||
2008 | 0.44 | 0.05 | 0.00 | 0.00 | 0.01 | 0.02 | 0.87 | 0.00 | 0.00 | 0.00 | 0.36 | 0.26 | 0.87 | |||||||||||||
2009 | 0.03 | 0.75 | 0.00 | 0.26 | 0.00 | 0.00 | 0.62 | 0.00 | 0.00 | 0.00 | 0.00 | 0.16 | 0.75 | |||||||||||||
2010 | 0.67 | 0.41 | a | 0.38 | 0.09 | 0.00 | 0.00 | 0.02 | 0.37 | ----- | z | 0.21 | y | 0.00 | 0.94 | v | ----- | z | ||||||||
2011 | 0.00 | 0.25 | 0.09 | 0.02 | 0.10 | 0.00 | 0.00 | 0.02 | 0.90 | 0.07 | 0.00 | ----- | z | ----- | z | |||||||||||
2012 | 0.03 | 0.02 | 0.15 | 0.33 | 0.00 | 0.00 | 0.07 | 0.60 | c | 0.05 | 0.96 | a | 0.02 | 0.21 | 0.96 | d | ||||||||||
2013 | 0.35 | 0.00 | 0.48 | 0.10 | 0.14 | 0.00 | 0.65 | 0.67 | 0.08 | d | 0.14 | a | 0.72 | 0.00 | 0.72 | e | ||||||||||
2014 | 0.00 | 0.03 | 0.37 | 0.03 | 0.01 | 0.00 | 0.29 | 0.34 | 0.75 | 0.00 | 0.00 | 0.29 | 0.75 | |||||||||||||
2015 | 0.32 | 0.05 | 0.21 | c | 0.00 | 0.25 | 0.00 | 0.31 | c | 0.21 | 0.04 | 0.87 | 0.12 | b | 0.10 | 0.87 | h | |||||||||
2016 | 0.41 | 0.21 | 0.00 | 1.35 | 1.03 | 0.13 | 0.45 | 0.16 | 0.00 | 0.07 | 0.05 | 0.34 | 1.35 | |||||||||||||
2017 | 0.38 | 0.73 | 0.11 | 0.03 | 0.06 | 0.00 | 0.02 | 0.29 | 0.22 | 0.00 | 0.00 | 0.00 | 0.73 | |||||||||||||
2018 | 0.49 | 0.00 | 0.53 | 0.00 | 0.00 | f | 0.00 | 0.33 | 0.02 | 0.00 | 0.10 | 0.06 | 0.10 | a | 0.53 | g | ||||||||||
2019 | 0.28 | 0.64 | 0.31 | 0.98 | 0.97 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.23 | 0.98 | |||||||||||||
2020 | 0.00 | 0.30 | 1.05 | a | 0.17 | c | 0.00 | b | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | d | 1.05 | j | ||||||||
2021 | 0.35 | 0.03 | c | 0.18 | 0.03 | 0.04 | a | 0.04 | 0.80 | a | 0.04 | 0.07 | 0.25 | 0.00 | 0.60 | 0.80 | e | |||||||||
2022 | 0.20 | 0.00 | 0.09 | c | 0.01 | 0.00 | 0.00 | 0.24 | 0.83 | 0.19 | 0.00 | 0.40 | 0.05 | 0.83 | c | |||||||||||
2023 | 0.21 | 0.65 | 0.29 | b | 0.00 | 0.02 | 0.54 | 0.00 | e | 1.40 | 2.69 | b | 0.06 | 0.05 | 0.29 | 2.69 | i | |||||||||
2024 | 0.14 | c | 0.88 | 0.42 | a | 0.31 | a | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.88 | e | |||||||||
2025 | 0.01 | 0.29 | 0.23 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.25 | 0.28 | 0.30 | 0.18 | 0.13 | 0.09 | 0.25 | 0.27 | 0.27 | 0.21 | 0.22 | 0.25 | 0.87 | |||||||||||||
S.D. | 0.28 | 0.34 | 0.32 | 0.26 | 0.23 | 0.22 | 0.34 | 0.36 | 0.44 | 0.29 | 0.31 | 0.36 | 0.42 | |||||||||||||
SKEW | 1.32 | 2.08 | 1.77 | 2.08 | 2.76 | 4.46 | 2.11 | 1.63 | 2.69 | 1.71 | 1.72 | 2.91 | 0.71 | |||||||||||||
MAX | 1.15 | 1.90 | 1.80 | 1.35 | 1.10 | 1.55 | 1.72 | 1.44 | 2.69 | 1.19 | 1.48 | 2.05 | 2.05 | |||||||||||||
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 | 0.18 | |||||||||||||
YRS | 84 | 83 | 83 | 84 | 81 | 84 | 83 | 84 | 82 | 80 | 84 | 80 | 61 |