YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | 0.47 | 0.05 | 0.87 | 1.98 | 0.19 | 0.98 | 0.93 | 2.57 | 1.39 | 0.62 | 0.00 | 1.50 | 11.55 | |||||||||||||
1943 | 0.60 | 0.42 | 1.64 | 0.47 | 0.39 | ----- | z | 1.47 | 2.19 | 1.40 | 0.60 | 0.25 | 0.83 | 10.26 | a | |||||||||||
1944 | 0.31 | 0.40 | 0.58 | 1.65 | 0.78 | 0.04 | 1.78 | 1.51 | 0.91 | 1.76 | 0.64 | 1.06 | 11.42 | |||||||||||||
1945 | 0.66 | 0.42 | 0.60 | 1.94 | 0.11 | 0.15 | 2.04 | 1.74 | 0.75 | 0.70 | 0.00 | 1.01 | 10.12 | |||||||||||||
1946 | 0.00 | 0.24 | y | 1.21 | 0.78 | 0.82 | 0.16 | 1.96 | 3.30 | 0.45 | 1.60 | 0.59 | 0.12 | 10.99 | a | |||||||||||
1947 | 0.37 | 0.80 | 0.65 | 0.05 | 0.96 | 0.07 | 1.40 | 3.18 | q | 1.00 | n | ----- | z | ----- | z | ----- | z | 4.30 | e | |||||||
1948 | 0.08 | w | 1.04 | n | 1.23 | g | 0.47 | n | 0.90 | q | 1.79 | d | 1.18 | 2.39 | g | 1.27 | 1.39 | 0.20 | 0.05 | g | 5.83 | g | ||||
1949 | 1.67 | 0.64 | 0.53 | 1.17 | 1.64 | 1.87 | 3.58 | 0.76 | 0.72 | 0.45 | 0.00 | 0.28 | 13.31 | |||||||||||||
1950 | 1.06 | 0.30 | 0.44 | 0.25 | 1.22 | 1.19 | 2.54 | 1.08 | 1.60 | 0.30 | 0.18 | ----- | z | 10.16 | a | |||||||||||
1951 | 0.25 | 0.51 | 0.80 | 1.25 | 0.44 | 0.00 | 1.17 | 2.11 | 0.00 | 0.35 | 0.22 | 1.31 | 8.41 | |||||||||||||
1952 | 0.54 | 0.53 | 0.32 | ----- | z | 1.10 | 0.65 | 1.71 | 3.10 | a | ----- | z | 0.03 | 1.55 | 0.70 | 10.23 | b | |||||||||
1953 | 0.40 | 0.50 | 0.64 | 0.79 | 1.10 | 0.82 | 1.46 | 1.46 | 0.00 | 1.17 | 0.86 | 0.65 | 9.85 | |||||||||||||
1954 | 1.06 | 0.00 | 1.33 | 0.26 | 1.32 | 0.42 | 0.98 | 1.36 | a | 1.04 | 1.15 | ----- | z | 0.36 | 9.28 | a | ||||||||||
1955 | 0.21 | 0.88 | 0.00 | 0.70 | 1.98 | 0.00 | 1.77 | 2.76 | 0.60 | ----- | z | ----- | z | ----- | z | 8.90 | c | |||||||||
1956 | 1.75 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.37 | v | 1.81 | 0.00 | 0.33 | ----- | z | ----- | z | 3.89 | h | ||||
1957 | ----- | z | ----- | z | ----- | z | 1.54 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.78 | 0.30 | 2.62 | i | ||
1958 | 0.65 | 0.69 | 0.98 | 1.62 | 0.13 | 0.42 | 0.87 | 2.24 | 1.05 | 1.05 | 0.43 | 0.32 | 10.45 | |||||||||||||
1959 | 0.05 | 0.38 | 0.50 | 0.93 | 0.66 | 0.58 | 0.69 | 3.29 | 0.29 | 1.55 | 0.22 | 0.99 | 10.13 | |||||||||||||
1960 | 0.60 | 0.78 | 0.73 | 0.53 | 0.56 | 0.30 | 0.60 | 0.83 | 0.36 | 2.67 | 0.30 | 0.89 | 9.15 | |||||||||||||
1961 | 0.48 | 0.20 | 1.08 | 0.98 | 0.14 | 0.54 | 0.70 | 2.59 | 2.23 | 1.36 | 0.48 | 0.41 | 11.19 | |||||||||||||
1962 | 0.71 | 0.47 | 0.52 | 0.08 | 0.04 | 0.02 | 0.85 | 0.38 | 1.93 | 0.62 | 1.47 | 0.38 | 7.47 | |||||||||||||
1963 | 0.31 | 0.86 | 0.49 | 0.00 | 0.00 | 0.26 | 0.92 | 1.10 | 0.55 | 0.28 | 0.24 | 0.00 | 5.01 | |||||||||||||
1964 | 0.21 | 0.91 | 0.77 | 0.58 | 0.69 | 0.03 | 1.43 | 2.68 | 1.74 | 0.00 | 0.70 | 0.89 | 10.63 | |||||||||||||
1965 | 1.28 | 0.34 | 0.43 | 0.67 | 0.67 | 1.16 | 2.11 | 1.36 | 1.37 | ----- | z | 0.73 | 0.73 | 10.85 | a | |||||||||||
1966 | 0.31 | 0.09 | 0.11 | 0.13 | 0.12 | 2.24 | 1.10 | 2.31 | 0.85 | 0.18 | 0.27 | 0.75 | 8.46 | |||||||||||||
1967 | 0.17 | 0.22 | 0.41 | 0.02 | 0.34 | 1.13 | 1.63 | 4.02 | 1.08 | 0.09 | 0.33 | 0.94 | 10.38 | |||||||||||||
1968 | 0.14 | 0.80 | 0.34 | 0.44 | 1.53 | 0.52 | 2.36 | ----- | z | 0.02 | 0.48 | 0.57 | 0.25 | 7.45 | a | |||||||||||
1969 | 1.11 | 0.26 | 0.41 | 0.70 | 1.64 | 0.91 | 3.05 | 3.44 | 0.61 | 2.83 | 0.40 | 0.54 | 15.90 | |||||||||||||
1970 | 0.03 | 0.14 | 1.26 | 0.27 | 0.65 | 0.80 | 4.41 | 1.86 | 0.81 | 0.61 | 0.23 | 0.06 | 11.13 | |||||||||||||
1971 | 0.17 | 0.40 | 0.03 | 0.93 | 0.28 | ----- | z | 1.23 | 2.06 | 2.46 | 1.08 | 0.10 | 1.21 | 9.95 | a | |||||||||||
1972 | 0.16 | 0.13 | ----- | z | ----- | z | 0.53 | 0.50 | 1.18 | 1.32 | 2.06 | 2.14 | 0.69 | 0.64 | 9.35 | b | ||||||||||
1973 | 0.35 | 0.38 | 1.42 | 0.50 | 0.81 | 0.46 | 2.44 | 0.43 | 1.27 | ----- | z | 0.17 | 0.18 | 8.41 | a | |||||||||||
1974 | 1.38 | 0.30 | 1.09 | 0.28 | 0.00 | 0.55 | 1.61 | h | 2.07 | f | 0.31 | b | 2.86 | 0.90 | 0.46 | 8.13 | b | |||||||||
1975 | 0.44 | 0.95 | 1.26 | 0.46 | 0.13 | 0.25 | 2.99 | 0.90 | 1.86 | 0.26 | 0.77 | 0.13 | 10.40 | |||||||||||||
1976 | 0.13 | 0.44 | 0.25 | 0.50 | 0.84 | 0.42 | 1.19 | 1.27 | 1.84 | 0.39 | 0.36 | 0.01 | 7.64 | |||||||||||||
1977 | 0.80 | 0.23 | 0.05 | 1.61 | 0.85 | 0.10 | 2.87 | 2.76 | 1.70 | 0.31 | 1.03 | 0.10 | 12.41 | |||||||||||||
1978 | 1.16 | 0.56 | 1.60 | 0.21 | 2.49 | 1.89 | 0.62 | 0.96 | 0.53 | 0.70 | 1.89 | 1.02 | 13.63 | |||||||||||||
1979 | 1.58 | 0.24 | 0.54 | 0.66 | 2.43 | 1.74 | 2.14 | 1.65 | 0.54 | 0.82 | 0.52 | 0.54 | 13.40 | |||||||||||||
1980 | 1.26 | 0.96 | 1.14 | 0.98 | 1.02 | 0.00 | 1.59 | 2.91 | 0.99 | 0.45 | 0.35 | 0.17 | 11.82 | |||||||||||||
1981 | 0.19 | 0.10 | 1.27 | 0.46 | 0.76 | 0.70 | 1.81 | 3.72 | 1.14 | 0.65 | 0.31 | 0.20 | 11.31 | |||||||||||||
1982 | 0.96 | 1.48 | 0.94 | 0.28 | 0.95 | 0.32 | 3.76 | 3.26 | 1.09 | 0.27 | 0.61 | 0.75 | 14.67 | |||||||||||||
1983 | 0.93 | 0.67 | 0.97 | 0.28 | 1.01 | 0.52 | 1.27 | 1.93 | 1.17 | 1.29 | 0.62 | 1.64 | 12.30 | |||||||||||||
1984 | 0.34 | 0.10 | 1.01 | 0.76 | 0.04 | 1.05 | 1.22 | 1.82 | 0.90 | 1.73 | 0.21 | ----- | z | 9.18 | a | |||||||||||
1985 | 0.85 | 0.80 | 1.74 | 2.83 | 1.74 | 0.66 | 0.70 | 1.09 | 2.03 | 2.26 | 0.49 | 0.05 | 15.24 | |||||||||||||
1986 | 0.08 | 0.89 | 0.83 | 0.96 | 0.94 | 2.62 | 1.94 | 1.58 | 1.65 | 1.01 | 1.28 | 0.55 | 14.33 | |||||||||||||
1987 | 0.88 | 0.74 | 0.24 | 0.54 | 1.96 | 0.61 | 0.86 | 1.63 | 0.35 | 0.53 | 1.72 | 0.73 | 10.79 | |||||||||||||
1988 | 1.01 | 0.31 | 0.54 | 1.12 | 1.63 | 1.02 | 1.53 | 2.74 | 1.75 | 0.44 | 0.28 | 0.09 | a | 12.46 | ||||||||||||
1989 | 0.83 | 0.63 | 0.32 | 0.01 | 0.55 | 0.54 | 1.32 | 1.14 | 0.63 | 1.50 | 0.00 | 0.16 | 7.63 | |||||||||||||
1990 | 0.34 | 0.82 | 0.92 | 2.42 | 0.65 | 0.99 | 4.50 | 0.80 | 2.24 | 0.85 | 1.77 | 1.60 | 17.90 | |||||||||||||
1991 | 0.35 | 0.15 | 0.88 | 0.21 | 1.14 | 1.81 | 1.44 | 2.52 | 1.62 | 0.30 | 2.09 | 0.51 | 13.02 | |||||||||||||
1992 | 0.35 | 0.53 | 1.74 | 0.53 | 1.88 | 0.71 | 1.10 | 2.92 | 0.57 | 0.29 | 0.71 | 1.58 | 12.91 | |||||||||||||
1993 | 1.63 | 1.06 | 0.88 | 0.06 | 1.10 | 0.31 | 0.08 | 3.74 | 0.62 | 0.50 | 0.91 | 0.10 | 10.99 | |||||||||||||
1994 | 0.34 | 0.88 | 0.95 | 1.21 | 2.43 | 0.20 | 1.18 | 1.92 | 1.42 | 1.62 | 1.32 | 0.28 | 13.75 | |||||||||||||
1995 | 1.17 | 0.58 | 1.67 | 1.28 | 1.16 | 0.52 | 0.31 | 1.47 | 2.42 | 0.00 | 0.34 | c | 0.34 | 11.26 | ||||||||||||
1996 | 4.20 | 0.21 | 0.65 | 0.00 | 0.00 | 0.18 | 3.15 | 1.40 | 0.78 | 1.49 | 1.34 | 0.40 | 13.80 | |||||||||||||
1997 | 1.12 | b | 0.41 | 0.07 | 1.08 | e | 1.98 | 1.45 | 1.66 | 2.59 | 1.57 | 0.82 | 0.75 | a | 1.00 | 14.50 | ||||||||||
1998 | 0.05 | 0.51 | 0.58 | 0.27 | 0.00 | 0.03 | 2.57 | 1.40 | 1.10 | k | 3.22 | 0.80 | 0.15 | 9.58 | a | |||||||||||
1999 | 0.25 | i | 0.00 | 0.76 | 2.69 | 1.65 | 1.44 | r | 3.52 | 3.28 | 1.14 | 0.35 | 0.10 | 0.29 | 13.78 | b | ||||||||||
2000 | 0.61 | 0.15 | 1.71 | 0.37 | 0.00 | 0.68 | 2.23 | 0.90 | 0.12 | 2.58 | 0.91 | d | 0.10 | 10.36 | ||||||||||||
2001 | 0.38 | 0.70 | 0.31 | 0.64 | 0.08 | 0.36 | 1.82 | 1.63 | 0.97 | 0.30 | 1.10 | 0.40 | 8.69 | |||||||||||||
2002 | 0.23 | a | 0.16 | 0.11 | 0.20 | 0.00 | 0.60 | 0.83 | 0.94 | 2.72 | 0.87 | 1.26 | 0.87 | 8.79 | ||||||||||||
2003 | 0.00 | 1.04 | 0.39 | 0.12 | 0.23 | 0.24 | 0.84 | 1.50 | 1.69 | 0.78 | 0.78 | 0.23 | 7.84 | |||||||||||||
2004 | 0.86 | 0.57 | 0.26 | 2.75 | 0.00 | 0.96 | 1.43 | 0.82 | 0.70 | 0.69 | 0.48 | 0.24 | 9.76 | |||||||||||||
2005 | 1.77 | 0.76 | 0.97 | 1.27 | 0.67 | 0.11 | 1.30 | 1.63 | 1.41 | 1.62 | 0.03 | 0.09 | 11.63 | |||||||||||||
2006 | 0.07 | 0.01 | 0.49 | 0.72 | 0.19 | 1.22 | 2.23 | 4.09 | 2.13 | 1.05 | 0.05 | 1.58 | 13.83 | |||||||||||||
2007 | 0.70 | 0.64 | 0.56 | 1.56 | 2.20 | 0.44 | 1.80 | 1.49 | 3.47 | 0.25 | 0.22 | 1.65 | 14.98 | |||||||||||||
2008 | 0.68 | 0.93 | 0.06 | 0.00 | 0.90 | 0.20 | 1.86 | 3.01 | 1.18 | 0.86 | 0.12 | 1.18 | 10.98 | |||||||||||||
2009 | 0.37 | 0.07 | 0.42 | 0.62 | 0.89 | 1.62 | 2.19 | 0.93 | 1.09 | ----- | z | 0.21 | 1.33 | 9.74 | a | |||||||||||
2010 | 0.91 | 0.79 | 0.94 | 1.09 | 0.04 | 0.55 | 1.86 | 1.70 | 0.84 | 0.86 | ----- | z | ----- | z | 9.58 | b | ||||||||||
2011 | 0.00 | ----- | z | ----- | z | 1.41 | w | 0.82 | y | 0.00 | 0.77 | x | 0.37 | v | 2.43 | b | 1.19 | d | 0.42 | j | 1.10 | g | 3.62 | h | ||
2012 | ----- | z | 0.59 | r | 0.49 | 0.96 | t | 0.24 | 0.27 | 0.58 | a | ----- | z | 1.18 | 0.24 | ----- | z | 0.60 | 3.60 | e | ||||||
2013 | 0.31 | ----- | z | ----- | z | 0.21 | 0.23 | ----- | z | 1.54 | 1.69 | 3.35 | 0.52 | 1.69 | 0.11 | 9.65 | c | |||||||||
2014 | 0.02 | 0.19 | 0.77 | 0.40 | 1.15 | 0.00 | 3.17 | 0.94 | 0.57 | 0.62 | 0.79 | 1.22 | 9.84 | |||||||||||||
2015 | 0.96 | 1.05 | 0.56 | 1.16 | 3.43 | 1.40 | 2.55 | 2.08 | 0.27 | 1.69 | 1.15 | 0.79 | 17.09 | |||||||||||||
2016 | 0.67 | 0.20 | 0.02 | 1.71 | 0.70 | 1.23 | 1.01 | 3.39 | 1.62 | 0.08 | 1.08 | 1.33 | 13.04 | |||||||||||||
2017 | 1.64 | 0.31 | 0.92 | 1.01 | 1.06 | 0.48 | 1.87 | 1.99 | 2.04 | 0.33 | 0.07 | 0.00 | 11.72 | |||||||||||||
2018 | 0.16 | 0.71 | 0.17 | 0.54 | 0.23 | 0.16 | 2.42 | 1.18 | 0.33 | 1.88 | 0.12 | 0.67 | 8.57 | |||||||||||||
2019 | 0.57 | 1.32 | 1.37 | 1.30 | 2.11 | 0.24 | 1.51 | 1.19 | 1.92 | 0.12 | 0.68 | 1.09 | 13.42 | |||||||||||||
2020 | 0.51 | 0.43 | 0.42 | 0.02 | 0.37 | 0.53 | 1.22 | 0.85 | 1.76 | 1.34 | 0.33 | 0.47 | 8.25 | |||||||||||||
2021 | 0.07 | 0.34 | 0.35 | 0.43 | 0.79 | 0.67 | 1.18 | 0.97 | 1.21 | 0.05 | 0.05 | 1.29 | 7.40 | |||||||||||||
2022 | 0.05 | a | 0.66 | 1.01 | 0.00 | 0.03 | 1.95 | 1.85 | 3.56 | 2.40 | 0.87 | 0.43 | 0.17 | 12.98 | ||||||||||||
2023 | 0.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.16 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.64 | 0.51 | 0.72 | 0.79 | 0.85 | 0.68 | 1.72 | 1.94 | 1.23 | 0.92 | 0.62 | 0.62 | 11.40 | |||||||||||||
S.D. | 0.63 | 0.33 | 0.46 | 0.68 | 0.75 | 0.60 | 0.90 | 0.94 | 0.77 | 0.75 | 0.51 | 0.48 | 2.61 | |||||||||||||
SKEW | 2.60 | 0.48 | 0.51 | 1.18 | 0.99 | 1.14 | 1.01 | 0.53 | 0.58 | 1.14 | 0.98 | 0.59 | 0.12 | |||||||||||||
MAX | 4.20 | 1.48 | 1.74 | 2.83 | 3.43 | 2.62 | 4.50 | 4.09 | 3.47 | 3.22 | 2.09 | 1.65 | 17.90 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.38 | 0.00 | 0.00 | 0.00 | 0.00 | 5.01 | |||||||||||||
YRS | 78 | 74 | 75 | 75 | 77 | 75 | 77 | 74 | 77 | 75 | 74 | 73 | 57 |