YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | 0.79 | 0.43 | a | 0.81 | b | 2.24 | 5.65 | 3.80 | 4.41 | 2.95 | 3.36 | 2.46 | t | 0.17 | 0.08 | 24.69 | a | |||||||||
1942 | 0.25 | a | 0.34 | b | 1.21 | a | 4.99 | 1.56 | 4.03 | 2.89 | 1.22 | 1.13 | 3.14 | 0.01 | 0.71 | 21.48 | ||||||||||
1943 | 0.00 | 0.02 | 0.04 | 0.70 | 1.06 | 2.36 | 2.10 | 3.62 | 0.00 | 0.60 | 0.17 | 1.98 | a | 12.65 | ||||||||||||
1944 | 1.51 | 0.16 | 0.32 | 5.53 | 5.95 | 0.60 | 3.50 | 1.31 | 0.29 | 0.94 | 0.81 | 1.10 | 22.02 | |||||||||||||
1945 | 1.18 | 0.18 | 0.01 | 1.03 | 2.05 | 3.44 | 1.19 | 5.91 | 2.00 | 0.12 | 0.02 | 0.47 | 17.60 | |||||||||||||
1946 | 0.02 | 0.58 | y | 1.01 | 1.20 | 2.10 | 2.11 | 1.41 | 2.74 | 1.32 | 3.57 | 1.58 | 0.01 | 17.07 | a | |||||||||||
1947 | 0.10 | 0.04 | 0.84 | 1.20 | 5.05 | 0.59 | 3.09 | 0.97 | 0.07 | 1.01 | 0.38 | 0.90 | 14.24 | |||||||||||||
1948 | 0.16 | 0.75 | 1.05 | b | 0.32 | 4.88 | 2.83 | 6.98 | 1.90 | c | 1.20 | 0.29 | 0.91 | i | 0.01 | 20.37 | a | |||||||||
1949 | 0.82 | a | 0.46 | 0.99 | 0.47 | 4.28 | 4.70 | 5.12 | 3.25 | 0.85 | 1.26 | c | 0.11 | 0.23 | 22.54 | |||||||||||
1950 | 0.02 | 0.04 | 0.00 | 0.41 | 0.46 | 3.07 | 6.78 | 4.02 | 2.41 | 0.87 | 0.07 | 0.00 | 18.15 | |||||||||||||
1951 | 0.77 | 0.39 | 0.97 | 0.60 | 3.72 | 3.96 | 1.61 | 2.03 | 0.12 | 0.77 | 0.41 | 0.00 | 15.35 | |||||||||||||
1952 | 0.09 | 0.22 | 0.52 | 3.39 | 1.51 | 0.00 | 2.01 | 3.52 | 0.64 | 0.00 | 0.36 | 0.07 | 12.33 | |||||||||||||
1953 | 0.05 | 0.22 | 0.39 | 0.40 | 2.19 | 0.18 | 3.39 | 1.78 | 0.00 | 2.71 | a | 2.00 | 0.39 | 13.70 | ||||||||||||
1954 | 0.18 | c | 0.08 | 0.10 | 0.18 | 0.82 | 0.40 | 1.79 | 2.79 | 0.01 | 1.11 | 0.00 | 0.07 | 7.53 | ||||||||||||
1955 | 0.10 | 0.17 | 0.00 | 3.65 | 4.04 | 1.19 | a | 0.40 | e | 2.54 | 1.70 | 0.00 | 0.04 | 0.16 | 13.99 | |||||||||||
1956 | 0.27 | 0.04 | 0.11 | 0.00 | 1.53 | 0.26 | 2.61 | 1.04 | 0.00 | 0.21 | 0.23 | 0.00 | 6.30 | |||||||||||||
1957 | 0.23 | 0.06 | 3.57 | a | 2.51 | 3.09 | 2.60 | 0.69 | 2.47 | 2.06 | 1.33 | 0.51 | 0.02 | 19.14 | ||||||||||||
1958 | 0.72 | 0.54 | 1.84 | 1.92 | 4.59 | 4.90 | 4.98 | 1.27 | 1.38 | 0.03 | 0.55 | 0.38 | 23.10 | |||||||||||||
1959 | 0.49 | 0.20 | 0.67 | 0.17 | 3.04 | 1.63 | 2.57 | 3.96 | 0.36 | 2.91 | 0.23 | 0.47 | 16.70 | |||||||||||||
1960 | 0.97 | 0.94 | 0.39 | c | 0.95 | 1.02 | 3.04 | 0.61 | 0.00 | 3.08 | 1.90 | 0.00 | 0.38 | 13.28 | ||||||||||||
1961 | 0.04 | 0.33 | 1.27 | 0.31 | 1.36 | 2.06 | 6.73 | 3.88 | 1.47 | 0.75 | 1.56 | 0.09 | 19.85 | |||||||||||||
1962 | 0.50 | 0.00 | 1.99 | 1.57 | 0.97 | 4.08 | 2.46 | 0.23 | 2.74 | 0.20 | 0.38 | 0.05 | 15.17 | |||||||||||||
1963 | 0.00 | 0.38 | 0.28 | 0.15 | 2.59 | 2.74 | 1.40 | 0.15 | 1.67 | 0.00 | 0.25 | 0.29 | 9.90 | |||||||||||||
1964 | 0.00 | 0.71 | 0.00 | 0.29 | 3.48 | 1.60 | 2.37 | 0.94 | 0.41 | 0.03 | 1.18 | 0.43 | 11.44 | |||||||||||||
1965 | 0.10 | 0.20 | 0.29 | 0.02 | 1.59 | 5.75 | 2.77 | 3.12 | 3.64 | 3.11 | 0.00 | 0.35 | 20.94 | |||||||||||||
1966 | 0.50 | 0.23 | 0.01 | 0.28 | 0.79 | 3.74 | 4.43 | 3.22 | 3.20 | 0.22 | 0.00 | 0.26 | 16.88 | |||||||||||||
1967 | 0.11 | 0.00 | 0.05 | 1.22 | 1.59 | 4.74 | 1.90 | 3.10 | 0.62 | 0.17 | 0.12 | 0.21 | 13.83 | |||||||||||||
1968 | 0.00 | 0.07 | 0.11 | 0.65 | 1.59 | 2.80 | 1.50 | 1.87 | 0.14 | 0.18 | 0.25 | 0.06 | 9.22 | |||||||||||||
1969 | 0.00 | 0.34 | 0.77 | 1.18 | 4.47 | 2.88 | 1.34 | 6.16 | 2.15 | 2.56 | 0.20 | 0.20 | 22.25 | |||||||||||||
1970 | 0.00 | 0.00 | 0.41 | 1.41 | 1.23 | 1.18 | 2.68 | 2.51 | 1.76 | 0.60 | 0.77 | 0.00 | 12.55 | |||||||||||||
1971 | 0.06 | 0.92 | 0.12 | 1.05 | 3.01 | 2.32 | 3.61 | 0.59 | 1.67 | 1.30 | 2.12 | 0.47 | 17.24 | |||||||||||||
1972 | 0.07 | 0.00 | 0.13 | 0.35 | 2.98 | 4.80 | 2.17 | 4.90 | 2.22 | 0.23 | 2.63 | 0.16 | 20.64 | |||||||||||||
1973 | 0.26 | ----- | z | 2.51 | 1.12 | 1.36 | 0.93 | 5.08 | 1.85 | 2.01 | 0.47 | 0.05 | 0.26 | 15.90 | a | |||||||||||
1974 | 0.31 | 0.00 | 1.20 | 0.33 | 1.81 | 2.98 | 0.62 | 2.04 | 0.50 | 0.92 | 0.26 | 0.23 | 11.20 | |||||||||||||
1975 | 0.16 | 0.16 | 0.61 | 0.95 | 2.99 | 2.88 | 1.28 | 2.30 | 0.29 | 0.00 | 1.00 | 0.02 | 12.64 | |||||||||||||
1976 | 0.01 | 0.01 | 0.28 | 7.05 | 2.41 | 0.66 | 1.23 | 2.55 | 2.53 | 0.35 | 0.08 | 0.01 | 17.17 | |||||||||||||
1977 | 0.13 | 0.03 | 0.15 | 3.13 | 4.75 | 2.10 | 1.24 | 4.59 | 5.09 | 0.08 | 0.34 | 0.16 | 21.79 | |||||||||||||
1978 | 0.12 | 0.54 | 0.05 | 0.10 | 4.49 | 4.56 | 1.52 | 1.07 | 0.52 | 0.19 | 0.25 | b | 0.17 | 13.58 | ||||||||||||
1979 | 0.29 | 0.06 | 1.51 | 0.52 | 5.08 | 2.29 | 3.59 | 3.59 | 0.50 | 1.27 | 0.25 | 0.51 | 19.46 | |||||||||||||
1980 | 0.71 | 0.34 | 1.31 | 3.63 | 3.10 | 0.35 | 0.20 | 1.34 | 0.01 | 0.00 | 0.40 | 0.44 | 11.83 | |||||||||||||
1981 | 0.04 | 0.04 | 2.13 | 0.39 | 2.54 | 0.89 | 4.69 | 0.99 | 2.11 | 0.61 | 1.24 | 0.09 | 15.76 | |||||||||||||
1982 | 0.00 | 0.54 | 1.43 | 0.37 | 2.67 | 3.50 | 2.06 | 0.64 | 0.94 | 3.01 | 0.19 | 0.77 | 16.12 | |||||||||||||
1983 | 0.42 | 0.75 | 0.92 | 0.74 | 1.99 | 2.06 | 0.43 | 1.73 | 1.54 | 0.74 | 0.54 | 0.50 | 12.36 | |||||||||||||
1984 | 0.15 | 0.39 | 1.47 | 3.82 | 2.36 | 0.61 | 2.66 | 1.09 | 1.02 | 2.17 | 0.04 | 0.62 | 16.40 | |||||||||||||
1985 | 0.28 | 0.06 | 0.58 | 1.05 | 1.22 | 0.72 | 3.65 | 2.12 | 5.03 | 1.00 | 0.30 | 0.05 | 16.06 | |||||||||||||
1986 | 0.00 | 0.15 | 0.51 | 0.72 | 0.95 | 4.70 | 3.36 | 2.84 | 1.80 | 1.25 | 1.72 | 0.11 | 18.11 | |||||||||||||
1987 | 0.52 | 1.28 | 0.57 | 0.34 | 3.33 | 4.11 | 1.24 | 1.11 | 4.46 | 0.15 | 0.46 | r | 0.55 | 17.66 | a | |||||||||||
1988 | 0.40 | 0.07 | 0.70 | 2.07 | 4.06 | 1.01 | 4.08 | 1.18 | 3.04 | 0.03 | 0.28 | 0.01 | 16.93 | |||||||||||||
1989 | 0.30 | 0.10 | 0.06 | 0.35 | 3.56 | 5.73 | 1.68 | 2.56 | 2.20 | 0.15 | 0.00 | 0.17 | 16.86 | |||||||||||||
1990 | 1.03 | 1.08 | 0.64 | 1.33 | 4.83 | 1.52 | 3.39 | 0.51 | 3.11 | 0.34 | 0.90 | 0.27 | 18.95 | |||||||||||||
1991 | 0.17 | 0.00 | 0.97 | 0.92 | 2.22 | 3.85 | 0.63 | 5.20 | 1.42 | 0.86 | 1.61 | 1.08 | 18.93 | |||||||||||||
1992 | 0.23 | 0.28 | 0.36 | 0.51 | 1.34 | 4.43 | 1.15 | 3.49 | 1.07 | 0.07 | 0.90 | 0.25 | 14.08 | |||||||||||||
1993 | 0.82 | 0.66 | 1.46 | 0.68 | 2.88 | 5.54 | 0.61 | 3.18 | 0.81 | 1.25 | 0.44 | 0.88 | 19.21 | |||||||||||||
1994 | 0.29 | 0.03 | 0.36 | 0.98 | 1.97 | 1.88 | 2.73 | 6.75 | a | 0.58 | 1.46 | 0.46 | 0.54 | 18.03 | ||||||||||||
1995 | 0.46 | 0.10 | 0.56 | 0.88 | 2.59 | 3.33 | k | 3.02 | 1.75 | 1.54 | 0.08 | 0.01 | 0.25 | 11.24 | a | |||||||||||
1996 | 0.00 | 0.16 | 0.11 | 0.08 | 2.00 | 3.72 | 3.76 | 4.95 | 4.70 | 0.38 | 0.47 | 0.11 | 20.44 | |||||||||||||
1997 | 0.23 | 0.50 | 0.02 | 2.25 | 1.31 | 1.10 | 3.78 | 4.41 | 0.45 | 2.80 | 0.14 | 1.25 | 18.24 | |||||||||||||
1998 | 0.01 | 0.54 | 1.59 | 0.66 | 1.24 | 0.94 | 7.09 | 2.36 | 1.01 | 3.29 | 1.57 | 0.19 | 20.49 | |||||||||||||
1999 | 0.91 | 0.03 | 2.38 | 2.44 | 4.13 | 2.95 | 0.49 | 2.42 | 0.82 | 2.68 | 0.00 | 0.11 | 19.36 | |||||||||||||
2000 | 0.20 | 0.04 | 3.46 | 0.73 | 1.30 | 0.87 | 1.46 | 0.45 | 0.01 | 5.26 | 0.20 | 0.04 | 14.02 | |||||||||||||
2001 | 1.23 | 0.49 | 0.87 | 1.34 | 4.05 | 1.15 | 2.11 | 5.13 | 0.77 | 0.02 | 0.38 | 0.26 | 17.80 | |||||||||||||
2002 | 0.35 | 0.09 | 0.00 | 0.48 | 1.17 | 1.88 | 1.43 | 4.85 | 3.21 | 1.67 | 0.17 | 0.91 | 16.21 | |||||||||||||
2003 | 0.02 | 0.71 | 0.94 | 0.83 | 1.18 | 5.93 | 2.09 | 2.79 | 2.34 | 0.01 | 0.48 | 0.39 | 17.71 | |||||||||||||
2004 | 0.04 | 0.03 | 1.59 | 1.85 | 0.39 | 8.72 | 2.71 | 4.67 | 4.16 | 0.60 | 2.70 | 0.22 | 27.68 | |||||||||||||
2005 | 0.86 | 0.73 | 0.98 | 1.36 | 4.03 | 1.14 | 1.27 | 2.77 | 0.48 | 2.10 | 0.12 | 0.05 | 15.89 | |||||||||||||
2006 | 0.26 | 0.00 | 1.62 | 0.64 | 0.90 | 2.24 | 1.60 | 6.02 | 0.62 | 1.73 | 0.11 | 3.99 | a | 19.73 | ||||||||||||
2007 | 0.22 | 0.15 | 1.25 | 3.18 | 0.40 | 1.26 | 0.39 | 0.74 | 1.82 | 0.15 | 0.03 | 0.65 | 10.24 | |||||||||||||
2008 | 0.16 | 0.11 | 0.15 | 0.22 | 1.44 | 0.73 | 2.48 | 4.91 | 0.85 | 4.46 | 0.05 | 0.08 | 15.64 | |||||||||||||
2009 | 0.01 | 0.32 | 0.28 | 1.84 | 0.23 | 2.35 | 4.39 | 0.64 | 1.34 | 2.73 | 0.24 | 0.05 | 14.42 | |||||||||||||
2010 | 0.40 | 0.53 | 1.81 | 0.58 | 1.08 | 0.89 | 3.91 | 1.24 | 0.64 | 0.16 | 0.00 | 0.11 | 11.35 | |||||||||||||
2011 | 0.07 | x | 0.14 | v | 0.09 | w | 0.82 | u | 0.36 | x | 1.32 | u | 0.81 | s | 1.83 | v | 1.30 | v | ----- | z | 0.56 | w | 1.52 | k | 0.00 | l |
2012 | 0.03 | n | 0.37 | u | ----- | z | 1.78 | r | 1.15 | u | 0.60 | 1.93 | 1.98 | 1.47 | 2.86 | 0.00 | 0.33 | 9.17 | e | |||||||
2013 | 0.38 | 0.23 | 0.19 | 0.18 | 0.13 | 3.74 | 2.08 | 2.94 | 3.14 | 0.47 | 0.68 | 0.04 | 14.20 | |||||||||||||
2014 | 0.12 | 0.11 | 0.15 | 0.27 | 1.22 | 1.24 | 1.79 | 2.24 | 2.77 | 1.61 | 0.20 | 0.19 | 11.91 | |||||||||||||
2015 | 0.46 | 0.57 | 0.37 | 0.36 | 4.87 | 1.46 | 4.29 | 2.38 | 0.91 | 3.25 | 0.89 | 0.72 | 20.53 | |||||||||||||
2016 | 0.02 | 0.25 | 0.02 | 5.07 | 0.69 | 3.32 | 2.91 | 2.50 | 0.56 | 0.00 | 0.17 | 0.14 | 15.65 | |||||||||||||
2017 | 1.23 | 0.21 | 1.69 | 5.00 | 3.74 | 1.31 | 4.84 | 3.81 | 2.91 | 0.15 | 0.00 | 0.00 | 24.89 | |||||||||||||
2018 | 0.00 | 0.00 | 0.01 | 0.61 | 1.27 | 6.75 | 9.54 | 1.86 | 0.76 | 2.80 | 0.13 | 1.02 | 24.75 | |||||||||||||
2019 | 0.56 | 0.73 | 1.59 | 0.22 | 4.37 | 2.90 | 2.17 | 2.67 | 0.40 | 0.24 | 0.16 | 0.64 | 16.65 | |||||||||||||
2020 | 0.23 | 0.54 | 0.18 | 0.33 | 0.61 | 1.16 | 5.35 | 1.96 | 0.95 | 0.25 | 0.10 | 0.62 | 12.28 | |||||||||||||
2021 | 0.23 | 0.16 | 1.49 | 0.03 | 5.31 | 0.39 | 0.99 | 1.62 | 0.80 | 0.39 | 0.00 | 0.00 | 11.41 | |||||||||||||
2022 | 0.06 | 0.18 | 0.12 | 0.07 | 1.21 | 5.11 | 3.38 | 1.02 | 0.00 | 0.00 | 0.13 | 0.00 | 11.28 | |||||||||||||
2023 | 0.05 | 0.06 | 0.05 | 2.22 | 5.80 | 3.21 | 6.13 | 0.86 | 1.61 | 1.55 | 0.16 | 1.19 | 22.89 | |||||||||||||
2024 | 0.89 | 0.61 | 0.04 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.54 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.32 | 0.29 | 0.78 | 1.30 | 2.50 | 2.58 | 2.76 | 2.54 | 1.53 | 1.11 | 0.47 | 0.38 | 16.42 | |||||||||||||
S.D. | 0.35 | 0.29 | 0.78 | 1.44 | 1.55 | 1.77 | 1.83 | 1.55 | 1.26 | 1.21 | 0.61 | 0.54 | 4.24 | |||||||||||||
SKEW | 1.37 | 1.17 | 1.35 | 1.89 | 0.50 | 0.80 | 1.14 | 0.65 | 0.98 | 1.21 | 1.94 | 4.05 | 0.12 | |||||||||||||
MAX | 1.51 | 1.28 | 3.57 | 7.05 | 5.95 | 8.72 | 9.54 | 6.75 | 5.09 | 5.26 | 2.70 | 3.99 | 27.68 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 6.30 | |||||||||||||
YRS | 82 | 80 | 82 | 81 | 81 | 81 | 82 | 82 | 82 | 81 | 80 | 82 | 75 |