YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.07 | 0.33 | 0.20 | ----- | z | |||
1942 | 0.05 | 0.32 | 0.18 | 0.46 | 0.07 | 0.00 | 0.15 | 0.62 | 0.40 | 0.22 | 0.05 | 0.42 | 0.62 | |||||||||||||
1943 | 0.14 | 0.26 | 0.54 | 0.04 | 0.58 | 0.28 | 0.44 | 0.27 | 0.38 | 0.37 | 0.14 | 0.39 | 0.58 | |||||||||||||
1944 | 0.40 | 0.17 | 0.10 | 0.18 | 0.75 | 0.05 | 0.47 | 0.48 | 0.56 | 0.04 | ----- | z | 0.47 | ----- | z | |||||||||||
1945 | 0.26 | 0.19 | 0.29 | 0.40 | 0.00 | 0.01 | 0.25 | 0.30 | 0.35 | 0.56 | 0.00 | 0.46 | 0.56 | |||||||||||||
1946 | 0.04 | 0.11 | 0.18 | 0.05 | 0.23 | 0.04 | 0.81 | 0.58 | 0.59 | 0.18 | 0.38 | 0.29 | 0.81 | |||||||||||||
1947 | 0.08 | 0.13 | 0.15 | 0.09 | 0.66 | 0.01 | 0.31 | 1.16 | 0.26 | 1.03 | 0.25 | 0.27 | 1.16 | |||||||||||||
1948 | 0.01 | 0.37 | 0.26 | 0.19 | 0.11 | 0.48 | 0.04 | 0.39 | 0.34 | 1.05 | 0.00 | 0.37 | 1.05 | |||||||||||||
1949 | 0.16 | a | 0.37 | 0.31 | 0.15 | 0.55 | 0.85 | 0.18 | 0.94 | a | 0.14 | 0.33 | 0.14 | 0.04 | 0.94 | b | ||||||||||
1950 | 0.29 | 0.21 | 0.06 | 0.11 | 0.00 | 0.33 | 0.28 | 0.06 | 1.06 | 0.00 | 0.16 | 0.12 | 1.06 | |||||||||||||
1951 | 0.26 | 0.26 | 0.00 | 0.24 | 0.07 | 0.00 | 0.13 | 0.23 | 0.12 | 0.43 | 0.17 | 0.21 | 0.43 | |||||||||||||
1952 | 0.46 | 0.15 | 0.08 | 0.63 | 0.11 | 0.26 | 0.52 | 0.25 | 0.29 | 0.00 | 0.30 | 0.41 | 0.63 | |||||||||||||
1953 | 0.21 | 0.07 | 0.18 | 0.50 | 0.00 | 0.03 | 0.19 | 0.94 | 0.00 | 0.55 | 0.24 | 0.52 | 0.94 | |||||||||||||
1954 | 0.26 | 0.00 | 0.53 | 0.00 | 0.17 | 0.25 | 1.37 | 0.29 | 0.83 | 0.31 | 0.07 | 0.79 | 1.37 | |||||||||||||
1955 | 0.80 | 0.28 | 0.04 | 0.44 | 0.18 | 0.20 | 0.19 | 0.55 | 0.03 | 0.13 | 0.14 | 0.42 | 0.80 | |||||||||||||
1956 | 0.47 | 0.30 | 0.06 | 0.02 | 0.02 | 0.14 | 0.49 | 0.08 | 0.00 | 0.16 | 0.38 | 0.12 | 0.49 | |||||||||||||
1957 | 0.18 | 0.25 | 0.55 | 0.67 | 0.61 | 0.22 | 0.71 | 0.62 | 0.00 | 0.65 | 0.25 | 0.16 | 0.71 | |||||||||||||
1958 | 0.15 | 0.23 | 1.03 | 0.31 | 0.01 | 0.28 | 0.11 | 1.68 | 0.50 | 0.53 | 0.20 | 0.09 | 1.68 | |||||||||||||
1959 | 0.12 | 0.28 | 0.14 | 0.67 | 0.00 | 0.06 | 0.52 | 0.61 | 0.60 | 0.61 | 0.46 | 0.46 | 0.67 | |||||||||||||
1960 | 0.26 | 0.33 | 0.25 | 0.26 | 0.40 | 0.23 | 0.57 | 0.25 | 0.38 | 1.02 | 0.16 | 0.40 | 1.02 | |||||||||||||
1961 | 0.37 | 0.14 | 0.39 | 0.23 | 0.03 | 0.03 | 0.41 | 0.58 | 0.21 | 0.33 | 0.15 | 0.48 | 0.58 | |||||||||||||
1962 | 0.15 | 0.41 | 0.03 | 0.11 | a | 0.10 | 0.01 | 0.00 | 0.07 | 0.32 | 1.04 | 0.29 | 0.19 | 1.04 | a | |||||||||||
1963 | 0.32 | 0.25 | 0.11 | 0.09 | 0.01 | 0.04 | 0.55 | 0.67 | 0.78 | 1.01 | 0.20 | 0.06 | 1.01 | |||||||||||||
1964 | 0.07 | 0.17 | 0.20 | 0.80 | 0.14 | 0.00 | 0.52 | 0.26 | 0.86 | 0.00 | 0.34 | 0.40 | 0.86 | |||||||||||||
1965 | 0.51 | 0.28 | 0.06 | 0.51 | 0.36 | 0.31 | 0.61 | 0.46 | 0.81 | 0.50 | 0.61 | 0.46 | 0.81 | |||||||||||||
1966 | 0.14 | 0.06 | 0.04 | 0.18 | 0.36 | 0.06 | 0.17 | 0.42 | 0.41 | 0.13 | 0.12 | 0.56 | 0.56 | |||||||||||||
1967 | 0.51 | 0.03 | 0.05 | 0.01 | 0.22 | 0.20 | 0.09 | a | 0.62 | 0.17 | 0.10 | a | 0.26 | 0.70 | 0.70 | b | ||||||||||
1968 | 0.13 | 0.35 | 0.13 | 0.28 | 0.19 | 0.03 | 0.66 | 0.36 | 0.06 | 0.31 | 0.55 | 0.26 | 0.66 | |||||||||||||
1969 | 0.42 | 0.19 | 0.46 | 0.22 | 0.54 | 0.41 | 0.27 | 0.45 | 0.50 | 0.89 | 0.23 | 0.11 | 0.89 | |||||||||||||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | 0.30 | 0.00 | 0.00 | 0.26 | 0.63 | 0.12 | 0.59 | 0.25 | 0.02 | ----- | z | |||||||||
1999 | 0.11 | 0.04 | 0.07 | 0.40 | 0.41 | 0.09 | 0.45 | 0.81 | 0.05 | 0.01 | 0.00 | a | 0.10 | 0.81 | a | |||||||||||
2000 | 0.24 | 0.11 | 0.55 | 0.04 | 0.00 | 0.04 | 0.21 | 0.13 | 0.11 | 0.37 | 0.33 | 0.08 | 0.55 | |||||||||||||
2001 | 0.19 | a | 0.41 | 0.41 | a | 0.42 | 0.58 | 0.07 | 0.15 | 0.15 | 0.19 | 0.04 | a | 0.24 | 0.22 | 0.58 | c | |||||||||
2002 | 0.05 | 0.00 | 0.11 | 0.15 | 0.00 | 0.00 | 0.29 | 0.09 | 0.77 | 0.42 | 0.42 | 0.27 | 0.77 | |||||||||||||
2003 | 0.08 | 0.47 | 0.19 | 0.04 | 0.01 | 0.01 | 0.03 | 0.32 | 0.94 | 0.63 | 0.50 | 0.15 | a | 0.94 | a | |||||||||||
2004 | 0.15 | 0.39 | 0.04 | 1.20 | 0.02 | 0.03 | 0.11 | a | 0.03 | 0.97 | a | 0.15 | 0.39 | 0.22 | 1.20 | b | ||||||||||
2005 | 0.27 | 0.45 | 0.22 | 0.90 | 0.10 | 0.03 | 0.17 | 1.08 | 0.75 | 0.37 | 0.01 | 0.09 | 1.08 | |||||||||||||
2006 | 0.21 | 0.01 | 0.15 | 0.56 | a | 0.03 | 0.10 | 1.75 | 0.15 | 0.63 | 0.53 | 0.04 | 0.27 | 1.75 | a | |||||||||||
2007 | 0.27 | 0.44 | 0.30 | 0.20 | 0.38 | 0.12 | 0.13 | 0.39 | 0.40 | 0.09 | 0.29 | 0.25 | 0.44 | |||||||||||||
2008 | 0.41 | 0.34 | 0.05 | 0.09 | 0.53 | 0.14 | 0.10 | 0.51 | 0.24 | 0.50 | 0.47 | 0.32 | 0.53 | |||||||||||||
2009 | 0.22 | 0.21 | 0.17 | 0.31 | 0.34 | 0.23 | 0.02 | 0.07 | 0.04 | 0.31 | 0.27 | 0.19 | 0.34 | |||||||||||||
2010 | 0.50 | 0.26 | 0.26 | 0.23 | 0.03 | 0.17 | 0.27 | 0.61 | 0.54 | 0.45 | 0.05 | 0.46 | 0.61 | |||||||||||||
2011 | 0.02 | 0.07 | 0.27 | 0.52 | 0.40 | 0.00 | 0.15 | 0.11 | 0.97 | 0.84 | 0.21 | 0.12 | 0.97 | |||||||||||||
2012 | 0.11 | 0.16 | a | 0.17 | 0.01 | 0.02 | 0.11 | 0.99 | 0.17 | 0.39 | 0.02 | 0.22 | 0.37 | 0.99 | a | |||||||||||
2013 | 0.65 | 0.07 | 0.24 | 0.46 | 0.08 | 0.00 | 0.15 | 0.57 | 0.96 | 0.39 | 0.58 | a | 0.09 | 0.96 | a | |||||||||||
2014 | 0.17 | 0.16 | 0.57 | 0.10 | 0.12 | 0.00 | 0.17 | 0.42 | 1.23 | 0.13 | 0.13 | 0.53 | 1.23 | |||||||||||||
2015 | 0.90 | 0.39 | 0.12 | 0.18 | 0.45 | 0.35 | 0.24 | 0.30 | 0.18 | 0.54 | a | 0.35 | 0.26 | 0.90 | a | |||||||||||
2016 | 0.19 | 0.20 | 0.02 | 0.19 | 0.61 | 0.02 | 0.22 | 0.36 | 0.23 | 0.16 | 0.74 | 0.69 | 0.74 | |||||||||||||
2017 | 0.20 | 0.32 | 0.15 | 0.56 | 0.20 | 0.00 | 0.54 | 0.38 | 0.72 | 0.00 | 0.03 | 0.00 | 0.72 | |||||||||||||
2018 | 0.09 | 0.07 | 0.07 | 0.32 | 0.22 | 0.26 | 0.56 | 0.06 | 0.10 | 0.14 | a | 0.06 | 0.18 | 0.56 | a | |||||||||||
2019 | 0.15 | 0.51 | 0.68 | 0.15 | 0.53 | 0.03 | 0.04 | a | 0.00 | a | 0.21 | 0.12 | 0.66 | b | 0.29 | b | 0.68 | f | ||||||||
2020 | 0.28 | 0.26 | 0.24 | 0.01 | 0.06 | 0.04 | 0.08 | 0.00 | 0.27 | 0.14 | 0.15 | 0.19 | 0.28 | |||||||||||||
2021 | 0.28 | 0.26 | 0.21 | 0.13 | 0.02 | 0.40 | 0.34 | 0.19 | 0.71 | 0.07 | 0.07 | 0.64 | 0.71 | |||||||||||||
2022 | 0.03 | 0.21 | 0.22 | 0.10 | 0.00 | 0.46 | 0.67 | 0.45 | 0.50 | 0.54 | 0.42 | 0.61 | 0.67 | |||||||||||||
2023 | 0.36 | 0.28 | 0.29 | 0.05 | 0.29 | 0.07 | 0.02 | 0.65 | 0.15 | 0.14 | 0.13 | c | 0.36 | 0.65 | c | |||||||||||
2024 | 0.41 | e | 0.25 | 0.39 | 0.00 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.25 | 0.23 | 0.23 | 0.29 | 0.22 | 0.14 | 0.35 | 0.42 | 0.43 | 0.39 | 0.25 | 0.31 | 0.82 | |||||||||||||
S.D. | 0.19 | 0.13 | 0.20 | 0.25 | 0.22 | 0.17 | 0.33 | 0.33 | 0.32 | 0.32 | 0.18 | 0.19 | 0.30 | |||||||||||||
SKEW | 1.34 | 0.05 | 1.65 | 1.33 | 0.74 | 1.82 | 2.05 | 1.37 | 0.56 | 0.75 | 0.72 | 0.51 | 0.98 | |||||||||||||
MAX | 0.90 | 0.51 | 1.03 | 1.20 | 0.75 | 0.85 | 1.75 | 1.68 | 1.23 | 1.07 | 0.74 | 0.79 | 1.75 | |||||||||||||
MIN | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.28 | |||||||||||||
YRS | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 54 | 55 | 51 |