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 | 3.82 | 0.41 | 1.02 | 5.25 | i | |||
1942 | 0.10 | 0.55 | 0.45 | 0.98 | 0.08 | 0.00 | 0.26 | 0.73 | 0.78 | 0.77 | 0.08 | 0.78 | 5.56 | |||||||||||||
1943 | 0.33 | 0.70 | 1.19 | 0.09 | 0.98 | 0.46 | 0.58 | 0.69 | 0.50 | 0.45 | 0.17 | 1.16 | 7.30 | |||||||||||||
1944 | 0.87 | 0.84 | 0.37 | 0.62 | 1.00 | 0.05 | 0.93 | 0.92 | 0.91 | 0.07 | ----- | z | 1.10 | 7.68 | a | |||||||||||
1945 | 0.77 | 0.47 | 1.10 | 0.61 | 0.00 | 0.01 | 0.84 | 0.66 | 0.62 | 1.36 | 0.00 | 0.73 | 7.17 | |||||||||||||
1946 | 0.07 | 0.17 | 0.39 | 0.14 | 0.43 | 0.05 | 1.42 | 1.43 | 0.91 | 0.62 | 0.84 | 0.31 | 6.78 | |||||||||||||
1947 | 0.25 | 0.34 | 0.23 | 0.11 | 1.53 | 0.01 | 0.36 | 2.64 | 0.48 | 1.92 | 0.57 | 0.57 | 9.01 | |||||||||||||
1948 | 0.01 | 0.98 | 0.63 | 0.26 | 0.28 | 1.66 | 0.05 | 1.08 | 0.96 | 2.77 | 0.00 | 0.95 | 9.63 | |||||||||||||
1949 | 0.86 | a | 0.62 | 0.62 | 0.25 | 1.15 | 1.46 | 0.41 | 1.13 | a | 0.32 | 0.82 | 0.28 | 0.07 | 7.99 | |||||||||||
1950 | 0.40 | 0.62 | 0.18 | 0.13 | 0.00 | 0.41 | 0.46 | 0.11 | 1.89 | 0.00 | 0.24 | 0.22 | 4.66 | |||||||||||||
1951 | 0.57 | 0.44 | 0.00 | 0.40 | 0.16 | 0.00 | 0.17 | 1.53 | 0.12 | 0.73 | 0.49 | 0.93 | 5.54 | |||||||||||||
1952 | 1.18 | 0.40 | 0.19 | 1.56 | 0.30 | 0.55 | 0.98 | 0.46 | 0.75 | 0.00 | 1.13 | 0.85 | 8.35 | |||||||||||||
1953 | 0.47 | 0.11 | 0.44 | 0.85 | 0.00 | 0.03 | 0.68 | 1.30 | 0.00 | 1.45 | 0.42 | 0.66 | 6.41 | |||||||||||||
1954 | 0.26 | 0.00 | 0.95 | 0.00 | 0.50 | 0.25 | 3.75 | 0.94 | 1.63 | 0.52 | 0.16 | 1.01 | 9.97 | |||||||||||||
1955 | 1.33 | 1.08 | 0.06 | 0.56 | 0.68 | 0.38 | 0.62 | 1.71 | 0.03 | 0.13 | 0.39 | 0.67 | 7.64 | |||||||||||||
1956 | 1.13 | 0.35 | 0.13 | 0.02 | 0.02 | 0.24 | 1.02 | 0.21 | 0.00 | 0.28 | 0.38 | 0.14 | 3.92 | |||||||||||||
1957 | 1.12 | 0.48 | 1.02 | 1.08 | 2.20 | 0.33 | 1.68 | 1.70 | 0.00 | 2.94 | 0.91 | 0.28 | 13.74 | |||||||||||||
1958 | 0.34 | 0.39 | 2.51 | 0.73 | 0.01 | 0.32 | 0.23 | 2.03 | 1.16 | 0.77 | 0.28 | 0.10 | 8.87 | |||||||||||||
1959 | 0.17 | 0.33 | 0.14 | 1.22 | 0.00 | 0.07 | 0.61 | 1.68 | 1.10 | 2.00 | 0.58 | 1.07 | 8.97 | |||||||||||||
1960 | 0.72 | 0.67 | 0.74 | 0.52 | 0.81 | 0.32 | 0.86 | 0.31 | 0.68 | 2.15 | 0.27 | 1.22 | 9.27 | |||||||||||||
1961 | 0.54 | 0.24 | 1.14 | 0.52 | 0.08 | 0.03 | 1.00 | 2.23 | 0.56 | 1.01 | 0.38 | 1.11 | 8.84 | |||||||||||||
1962 | 0.38 | 0.92 | 0.09 | 0.23 | a | 0.17 | 0.01 | 0.00 | 0.12 | 1.17 | 2.60 | 0.97 | 0.24 | 6.90 | ||||||||||||
1963 | 0.85 | 0.57 | 0.27 | 0.30 | 0.01 | 0.06 | 0.67 | 1.21 | 1.00 | 1.17 | 0.44 | 0.06 | 6.61 | |||||||||||||
1964 | 0.13 | 0.22 | 0.47 | 2.06 | 0.15 | 0.00 | 1.94 | 0.96 | 2.30 | 0.00 | 0.87 | 1.20 | 10.30 | |||||||||||||
1965 | 0.84 | 0.66 | 0.15 | 1.09 | 0.74 | 0.71 | 1.72 | 0.91 | 1.51 | 1.40 | 1.27 | 1.47 | 12.47 | |||||||||||||
1966 | 0.29 | 0.14 | 0.05 | 0.33 | 0.78 | 0.13 | 0.67 | 0.72 | 1.05 | 0.15 | 0.19 | 2.12 | 6.62 | |||||||||||||
1967 | 0.57 | 0.03 | 0.09 | 0.01 | 0.23 | 0.57 | 0.38 | a | 3.16 | 0.60 | 0.13 | a | 0.34 | 2.19 | 8.30 | |||||||||||
1968 | 0.18 | 0.86 | 0.50 | 1.03 | 0.53 | 0.03 | 1.77 | 1.20 | 0.06 | 0.64 | 1.02 | 0.40 | 8.22 | |||||||||||||
1969 | 1.22 | 0.39 | 0.86 | 0.40 | 0.89 | 1.45 | 0.65 | 1.10 | 0.81 | 2.66 | 0.35 | 0.23 | 11.01 | |||||||||||||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1998 | ----- | z | ----- | z | ----- | z | 0.55 | 0.00 | 0.00 | 1.03 | 0.90 | 0.22 | 2.48 | 1.10 | 0.03 | 6.31 | c | |||||||||
1999 | 0.26 | 0.08 | 0.07 | 0.85 | 1.09 | 0.19 | 1.47 | 3.23 | 0.16 | 0.01 | 0.00 | a | 0.11 | 7.52 | ||||||||||||
2000 | 0.73 | 0.31 | 2.94 | 0.07 | 0.00 | 0.06 | 0.36 | 0.37 | 0.32 | 1.65 | 0.69 | 0.20 | 7.70 | |||||||||||||
2001 | 0.73 | a | 1.09 | 0.99 | a | 0.71 | 0.83 | 0.09 | 0.41 | 0.46 | 0.23 | 0.08 | a | 0.50 | 0.57 | 6.69 | ||||||||||
2002 | 0.06 | 0.00 | 0.12 | 0.35 | 0.00 | 0.00 | 0.50 | 0.15 | 2.51 | 1.80 | 1.19 | 0.65 | 7.33 | |||||||||||||
2003 | 0.14 | 1.70 | 0.49 | 0.04 | 0.02 | 0.01 | 0.06 | 1.08 | 1.00 | 0.74 | 1.19 | 0.31 | a | 6.78 | ||||||||||||
2004 | 0.54 | 1.06 | 0.05 | 2.03 | 0.02 | 0.06 | 0.24 | a | 0.09 | 2.22 | a | 0.76 | 0.71 | 0.41 | 8.19 | |||||||||||
2005 | 1.33 | 2.28 | 0.47 | 1.08 | 0.26 | 0.07 | 0.30 | 1.55 | 1.03 | 1.24 | 0.02 | 0.14 | 9.77 | |||||||||||||
2006 | 0.44 | 0.01 | 0.66 | 0.60 | a | 0.03 | 0.12 | 2.38 | 0.18 | 1.66 | 2.19 | 0.05 | 0.79 | 9.11 | ||||||||||||
2007 | 0.66 | 0.54 | 0.78 | 0.34 | 1.16 | 0.12 | 0.36 | 0.90 | 0.47 | 0.23 | 0.42 | 0.68 | 6.66 | |||||||||||||
2008 | 1.60 | 0.77 | 0.07 | 0.09 | 0.55 | 0.14 | 0.13 | 1.40 | 0.27 | 0.57 | 0.65 | 0.97 | 7.21 | |||||||||||||
2009 | 0.37 | 0.56 | 0.29 | 0.38 | 0.84 | 0.46 | 0.04 | 0.13 | 0.08 | 0.81 | 0.35 | 0.43 | 4.74 | |||||||||||||
2010 | 1.91 | 1.06 | 0.76 | 0.40 | 0.03 | 0.19 | 0.87 | 1.76 | 0.99 | 0.90 | 0.11 | 1.18 | 10.16 | |||||||||||||
2011 | 0.04 | 0.17 | 0.34 | 1.20 | 0.72 | 0.00 | 0.51 | 0.14 | 2.30 | 1.72 | 0.73 | 0.37 | 8.24 | |||||||||||||
2012 | 0.32 | 0.29 | a | 0.33 | 0.02 | 0.02 | 0.11 | 1.18 | 0.35 | 0.62 | 0.02 | 0.45 | 1.07 | 4.78 | ||||||||||||
2013 | 1.07 | 0.17 | 0.25 | 0.50 | 0.10 | 0.00 | 0.32 | 1.86 | 3.10 | 0.65 | 0.84 | a | 0.15 | 9.01 | ||||||||||||
2014 | 0.17 | 0.38 | 1.13 | 0.19 | 0.25 | 0.00 | 0.22 | 1.00 | 1.69 | 0.22 | 0.36 | 1.00 | 6.61 | |||||||||||||
2015 | 1.54 | 1.17 | 0.22 | 0.54 | 1.71 | 1.43 | 1.01 | 0.80 | 0.35 | 1.07 | a | 0.81 | 0.65 | 11.30 | ||||||||||||
2016 | 0.64 | 0.35 | 0.02 | 0.42 | 0.78 | 0.03 | 0.50 | 0.79 | 0.61 | 0.29 | 1.66 | 1.24 | 7.33 | |||||||||||||
2017 | 0.95 | 0.94 | 0.37 | 1.16 | 0.49 | 0.00 | 1.47 | 0.43 | 1.73 | 0.00 | 0.04 | 0.00 | 7.58 | |||||||||||||
2018 | 0.21 | 0.12 | 0.18 | 0.42 | 0.22 | 0.40 | 1.32 | 0.07 | 0.15 | 0.52 | a | 0.15 | 0.56 | 4.32 | ||||||||||||
2019 | 0.66 | 1.33 | 1.77 | 0.30 | 1.48 | 0.08 | 0.05 | a | 0.00 | a | 0.39 | 0.17 | 0.97 | b | 0.90 | b | 8.10 | |||||||||
2020 | 0.58 | 0.34 | 0.96 | 0.02 | 0.06 | 0.06 | 0.28 | 0.00 | 0.39 | 0.19 | 0.23 | 0.26 | 3.37 | |||||||||||||
2021 | 0.55 | 0.71 | 0.54 | 0.14 | 0.02 | 0.65 | 0.50 | 0.45 | 1.45 | 0.27 | 0.12 | 1.31 | 6.71 | |||||||||||||
2022 | 0.03 | 0.33 | 0.69 | 0.17 | 0.00 | 0.64 | 1.13 | 0.98 | 1.22 | 1.01 | 0.46 | 0.81 | 7.47 | |||||||||||||
2023 | 1.21 | 0.72 | 1.17 | 0.07 | 0.57 | 0.19 | 0.03 | 1.15 | 0.27 | 0.14 | 0.13 | c | 0.64 | 6.29 | ||||||||||||
2024 | 0.52 | e | 0.37 | 1.26 | 0.00 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.15 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.62 | 0.56 | 0.59 | 0.53 | 0.46 | 0.27 | 0.77 | 0.98 | 0.88 | 0.96 | 0.51 | 0.70 | 7.75 | |||||||||||||
S.D. | 0.45 | 0.44 | 0.59 | 0.48 | 0.52 | 0.40 | 0.69 | 0.76 | 0.73 | 0.92 | 0.39 | 0.49 | 2.06 | |||||||||||||
SKEW | 0.79 | 1.45 | 1.97 | 1.34 | 1.24 | 2.16 | 1.88 | 1.00 | 1.01 | 1.07 | 0.78 | 0.80 | 0.38 | |||||||||||||
MAX | 1.91 | 2.28 | 2.94 | 2.06 | 2.20 | 1.66 | 3.75 | 3.23 | 3.10 | 3.82 | 1.66 | 2.19 | 13.74 | |||||||||||||
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 | 3.37 | |||||||||||||
YRS | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 54 | 55 | 52 |