YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.85 | 4.91 | 2.43 | 0.07 | 1.09 | a | 11.35 | g | ||||
1942 | 0.61 | 0.99 | a | 0.57 | 3.94 | v | 2.08 | 3.96 | 2.29 | 3.73 | 5.06 | 5.07 | a | 1.01 | 0.41 | 25.78 | a | |||||||||
1943 | ----- | z | 0.18 | 0.25 | 1.62 | 3.10 | 1.82 | 2.73 | 0.87 | 0.05 | 0.89 | 0.00 | 0.44 | 11.95 | a | |||||||||||
1944 | 1.31 | 0.18 | 2.27 | 5.96 | 1.87 | 1.26 | 4.76 | 0.79 | 0.74 | 1.43 | 1.33 | 0.32 | 22.22 | |||||||||||||
1945 | 0.63 | 0.22 | 0.08 | 2.95 | 3.29 | 1.78 | 2.90 | 6.19 | 1.15 | 0.51 | 0.28 | 0.00 | 19.98 | |||||||||||||
1946 | 0.31 | 0.11 | 2.76 | 0.59 | 6.15 | 2.22 | 7.37 | 1.71 | 0.11 | 2.12 | 2.52 | 0.05 | 26.02 | |||||||||||||
1947 | 0.28 | 0.46 | 0.96 | 3.16 | 3.48 | 2.01 | 1.56 | 1.56 | 0.61 | 0.56 | 0.59 | 0.50 | 15.73 | |||||||||||||
1948 | 0.54 | 0.35 | 2.06 | a | 0.44 | 3.08 | 8.17 | 1.56 | 3.65 | 0.30 | 0.49 | 1.16 | 0.40 | 22.20 | ||||||||||||
1949 | 0.96 | c | 0.18 | 3.03 | 1.70 | 5.23 | 5.46 | 1.73 | 5.15 | 0.61 | 1.62 | 0.29 | 0.00 | 25.96 | ||||||||||||
1950 | 0.08 | 0.32 | 0.64 | 0.67 | 2.22 | 0.93 | 1.45 | 7.24 | 0.69 | 0.00 | 0.10 | 0.04 | 14.38 | |||||||||||||
1951 | 0.10 | 0.31 | 0.03 | 2.02 | 1.91 | 6.45 | 2.66 | 2.07 | 1.53 | 0.84 | 0.51 | 0.26 | 18.69 | |||||||||||||
1952 | 0.18 | 0.47 | 1.46 | 2.31 | 2.79 | 0.93 | 0.89 | 1.13 | 0.52 | 0.10 | 0.81 | 1.26 | 12.85 | |||||||||||||
1953 | 0.22 | 0.15 | 0.47 | 4.77 | 1.37 | 1.42 | 1.19 | 1.70 | 0.00 | 0.40 | 0.98 | 0.63 | 13.30 | |||||||||||||
1954 | 0.35 | 0.00 | 1.11 | a | 0.70 | 2.53 | 0.91 | 0.65 | 0.11 | 0.63 | 1.22 | 0.15 | 0.40 | 8.76 | ||||||||||||
1955 | 0.32 | 0.77 | 0.33 | 1.22 | 2.78 | 3.50 | 0.35 | 1.20 | 0.83 | 0.78 | 0.19 | 0.24 | 12.51 | |||||||||||||
1956 | 0.59 | 0.40 | 0.55 | 0.32 | 0.72 | 1.17 | 4.90 | ----- | z | 0.00 | 0.34 | 1.55 | 0.24 | 10.78 | a | |||||||||||
1957 | 0.27 | 0.00 | 1.39 | a | 2.26 | 6.27 | 2.02 | 5.45 | 2.17 | 0.00 | 1.55 | 0.23 | 0.36 | 21.97 | ||||||||||||
1958 | 0.41 | 0.48 | 1.08 | 1.19 | 3.47 | 2.47 | 4.64 | 1.72 | 0.93 | 0.75 | 0.26 | 0.50 | 17.90 | |||||||||||||
1959 | 0.67 | 0.20 | 1.75 | 0.56 | 3.05 | 0.77 | 2.32 | 1.98 | 2.19 | 1.17 | 0.00 | 0.31 | 14.97 | |||||||||||||
1960 | 1.34 | 1.92 | 0.64 | 0.78 | b | 3.09 | 1.16 | v | ----- | z | ----- | z | ----- | z | 1.73 | 0.11 | 0.63 | 10.24 | d | |||||||
1961 | 0.01 | 0.00 | 1.77 | 1.30 | 3.99 | 1.42 | 4.17 | 1.24 | 2.50 | 0.26 | 0.76 | 0.18 | 17.60 | |||||||||||||
1962 | 0.15 | 0.17 | 0.70 | 1.34 | 3.04 | d | 3.75 | 4.42 | 1.87 | 0.16 | 0.68 | 0.35 | 0.17 | 16.80 | ||||||||||||
1963 | 0.31 | 0.11 | 1.20 | 0.00 | 1.35 | 3.59 | 2.61 | 2.83 | 4.07 | 0.14 | 0.45 | 0.32 | 16.98 | |||||||||||||
1964 | 0.00 | 0.40 | 0.61 | 2.79 | 2.47 | 3.53 | 0.28 | 0.54 | 1.10 | 0.00 | 0.22 | 0.02 | 11.96 | |||||||||||||
1965 | 0.63 | 0.60 | 0.34 | 0.00 | 1.88 | 7.52 | 3.42 | 4.65 | 3.17 | 2.06 | 0.03 | 0.46 | 24.76 | |||||||||||||
1966 | 0.68 | 0.24 | 0.49 | 1.24 | 0.16 | 1.86 | 4.82 | 2.35 | 3.32 | 0.68 | 0.11 | 0.07 | 16.02 | |||||||||||||
1967 | 0.25 | 0.00 | 0.52 | 1.07 | 4.33 | 2.81 | 2.83 | 0.22 | 2.60 | 0.80 | 0.26 | 0.12 | 15.81 | |||||||||||||
1968 | 0.00 | 0.10 | 0.36 | 1.39 | 2.77 | 1.23 | 3.63 | 5.92 | 0.15 | ----- | z | 0.27 | 0.03 | 15.85 | a | |||||||||||
1969 | 0.55 | 0.20 | 1.15 | 2.28 | 3.89 | 4.07 | 1.15 | 1.38 | 0.15 | 3.77 | ----- | z | 0.00 | 18.59 | a | |||||||||||
1970 | 0.00 | 0.00 | 1.25 | 0.70 | 1.05 | 3.33 | 0.77 | ----- | z | ----- | z | 1.08 | 0.70 | ----- | z | 8.88 | c | |||||||||
1971 | 0.75 | 1.23 | 0.23 | 3.26 | 5.64 | 1.81 | 2.05 | 0.35 | 1.87 | 1.50 | a | 0.66 | 0.00 | 19.35 | ||||||||||||
1972 | 0.49 | 0.00 | 0.15 | 1.00 | 4.55 | 6.68 | 1.06 | 2.47 | 0.40 | 1.81 | 1.65 | b | ----- | z | 20.26 | a | ||||||||||
1973 | ----- | z | 0.41 | 3.22 | 3.45 | ----- | z | 0.60 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.92 | 9.60 | g | |||||
1974 | ----- | z | 1.18 | 0.77 | 1.51 | 0.98 | 3.97 | 1.04 | 1.14 | ----- | z | ----- | z | ----- | z | ----- | z | 10.59 | e | |||||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.59 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.59 | k | |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.37 | m | 3.63 | 1.94 | 0.33 | 0.37 | 0.45 | 0.13 | 6.85 | f | ||||||
1978 | 0.21 | 0.62 | 0.18 | 1.72 | 3.71 | 1.49 | 0.71 | 2.70 | 0.03 | 0.70 | 0.28 | 1.01 | 13.36 | |||||||||||||
1979 | 0.60 | 0.21 | 1.78 | a | 1.04 | 2.61 | 3.06 | 4.00 | 2.68 | 0.33 | 1.57 | 0.70 | b | 0.58 | b | 19.16 | ||||||||||
1980 | 0.42 | 0.30 | g | 1.73 | 1.84 | 2.63 | 2.79 | 4.84 | 2.74 | ----- | z | ----- | z | 0.07 | 0.00 | 17.06 | c | |||||||||
1981 | 0.00 | a | ----- | z | 4.31 | 1.34 | b | 4.44 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.09 | h | |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.98 | 1.64 | 0.01 | 0.51 | 1.48 | 4.62 | g | |||||
1983 | 0.17 | 0.72 | 2.80 | 6.04 | 1.94 | a | 2.36 | 2.48 | 0.82 | 0.03 | 0.70 | 6.17 | 0.25 | a | 24.48 | |||||||||||
1984 | 1.20 | 1.52 | 3.07 | 5.95 | 1.91 | 2.22 | 0.90 | 0.49 | 0.52 | 2.08 | 0.32 | 0.89 | 21.07 | |||||||||||||
1985 | 0.54 | 0.85 | 0.41 | 0.90 | 4.33 | 1.37 | 4.67 | 0.63 | 2.30 | 0.55 | 0.95 | 0.11 | a | 17.61 | ||||||||||||
1986 | 0.00 | 0.56 | 0.18 | 2.50 | 2.36 | 3.05 | 2.14 | 0.54 | 0.37 | 1.67 | 0.69 | 0.11 | a | 14.17 | ||||||||||||
1987 | 0.38 | 1.28 | 2.20 | 0.67 | 4.93 | 4.12 | 2.22 | 0.82 | 0.69 | 0.30 | 1.03 | 0.50 | 19.14 | |||||||||||||
1988 | 0.73 | 0.15 | 0.45 | 1.65 | 5.91 | 1.53 | 1.30 | 3.90 | g | 0.99 | 0.00 | c | 0.63 | 0.00 | a | 13.34 | a | |||||||||
1989 | 0.86 | 0.00 | 0.00 | 0.00 | y | 3.02 | 4.75 | 0.89 | 4.55 | 1.38 | 0.04 | 0.10 | 0.31 | c | 15.90 | a | ||||||||||
1990 | 1.41 | 0.25 | 2.75 | 2.07 | 4.43 | b | 0.86 | e | 3.01 | a | 1.72 | a | 2.91 | 1.43 | a | 1.33 | 0.06 | f | 22.17 | a | ||||||
1991 | 0.51 | 0.23 | 2.06 | 1.20 | 4.29 | 2.86 | 7.71 | 3.01 | 0.68 | 1.56 | 2.91 | 1.35 | 28.37 | |||||||||||||
1992 | 2.20 | 0.65 | 1.67 | 0.22 | 0.26 | 2.62 | 4.31 | 8.57 | 0.60 | 0.74 | a | 0.56 | 0.13 | 22.53 | ||||||||||||
1993 | 0.63 | 1.55 | 0.51 | 0.50 | 3.74 | 2.62 | 3.52 | 0.98 | f | 0.24 | 0.90 | o | 0.66 | 0.30 | b | 14.27 | b | |||||||||
1994 | 1.41 | 0.00 | u | ----- | z | ----- | z | ----- | z | ----- | z | 1.96 | e | ----- | z | 0.01 | 2.38 | 0.71 | 0.52 | d | 6.99 | f | ||||
1995 | 1.07 | a | 0.79 | a | 2.16 | 3.82 | 8.70 | 2.71 | 2.98 | 0.79 | d | 1.04 | 0.46 | 0.84 | 0.00 | 25.36 | ||||||||||
1996 | 0.36 | d | 0.14 | 0.67 | e | 1.22 | 4.89 | 2.57 | 1.91 | 1.71 | l | 3.32 | 0.00 | a | 0.12 | 0.01 | c | 15.21 | a | |||||||
1997 | 0.07 | 0.94 | a | 0.00 | e | 0.74 | 2.00 | 3.27 | 3.15 | 4.91 | a | 0.81 | b | 1.57 | a | 0.48 | 0.50 | 18.44 | ||||||||
1998 | 0.06 | 0.84 | 0.05 | 1.00 | 2.93 | 0.85 | h | 4.55 | b | 2.20 | 0.25 | 0.95 | 1.05 | e | 0.20 | 14.08 | a | |||||||||
1999 | 0.20 | 0.00 | 0.56 | 2.33 | 2.60 | b | 3.75 | i | 1.05 | b | 6.45 | c | 1.80 | 0.40 | c | 0.25 | 0.33 | h | 15.64 | b | ||||||
2000 | 0.35 | 0.25 | 3.37 | 1.95 | 1.20 | 1.90 | f | 2.95 | 3.05 | 1.25 | c | 2.25 | b | 0.20 | 0.10 | d | 16.92 | a | ||||||||
2001 | 0.90 | c | 0.20 | 0.60 | 1.30 | 2.70 | c | 0.60 | 5.95 | e | 1.25 | 1.90 | c | 0.78 | e | 1.35 | b | 0.20 | c | 17.73 | ||||||
2002 | 0.15 | 0.13 | 0.28 | a | 0.20 | 0.49 | g | 1.55 | b | 0.00 | a | 2.27 | c | 1.72 | c | 1.60 | 0.00 | 0.00 | 7.90 | a | ||||||
2003 | 0.20 | c | 0.30 | 1.77 | b | 2.54 | 2.31 | 6.68 | 0.43 | 1.40 | 0.16 | f | 0.13 | e | 0.27 | 0.09 | 16.12 | a | ||||||||
2004 | 0.15 | 0.32 | b | ----- | z | 2.65 | b | 0.96 | a | 2.76 | 3.48 | f | 1.00 | 1.60 | 0.94 | 1.43 | 0.25 | 12.06 | b | |||||||
2005 | 0.10 | c | 0.05 | 0.61 | 1.45 | 3.05 | 3.81 | a | 2.64 | a | 2.77 | a | 0.16 | 4.33 | 0.80 | 0.13 | a | 19.90 | ||||||||
2006 | 0.31 | d | 0.05 | 0.70 | c | 0.69 | a | 1.41 | 1.54 | 2.69 | f | 4.23 | d | 2.90 | b | 2.23 | 0.07 | f | 2.02 | g | 14.06 | c | ||||
2007 | 0.26 | c | 0.52 | b | 0.36 | d | 3.00 | 1.59 | c | 3.10 | b | 1.83 | c | 4.03 | d | 0.84 | 0.78 | 0.30 | 1.20 | c | 17.81 | |||||
2008 | 0.02 | 0.13 | e | 0.36 | 2.28 | 1.91 | c | 2.65 | 2.49 | 4.68 | e | 2.61 | a | 2.61 | b | 0.16 | 0.13 | b | 20.03 | |||||||
2009 | 0.11 | 0.90 | 0.65 | 3.04 | 3.57 | d | 5.58 | 3.87 | 2.53 | 2.61 | c | 3.44 | 0.33 | 0.75 | 27.38 | |||||||||||
2010 | 0.00 | 0.30 | d | 1.71 | c | 2.73 | a | 1.36 | 2.62 | l | 4.02 | i | 5.32 | f | 1.59 | b | 0.20 | d | 0.35 | 0.54 | b | 8.78 | c | |||
2011 | 0.57 | 0.41 | 0.62 | 1.94 | 5.99 | e | 1.61 | 3.75 | 0.99 | 1.25 | 1.11 | 0.35 | 0.27 | 18.86 | ||||||||||||
2012 | 0.09 | 1.20 | 0.44 | 4.14 | 0.81 | 1.72 | k | 2.00 | h | 0.19 | m | 0.44 | a | 0.53 | f | 0.00 | 0.42 | 7.54 | d | |||||||
2013 | 0.02 | a | 0.41 | b | 1.54 | 0.21 | d | 0.98 | e | 2.09 | c | 1.56 | a | 5.31 | 2.83 | a | 0.57 | b | 0.50 | c | 0.06 | 16.08 | ||||
2014 | 0.88 | 0.36 | a | 0.37 | 0.62 | 2.71 | a | 5.62 | 3.71 | c | 3.31 | c | 2.88 | d | 0.39 | d | 0.11 | 1.42 | c | 22.38 | ||||||
2015 | 0.20 | 0.52 | 0.25 | 2.17 | a | 7.48 | 4.99 | 1.61 | b | 0.17 | 0.78 | 1.42 | e | 1.00 | e | 0.57 | 21.16 | |||||||||
2016 | 0.00 | 1.14 | 0.55 | c | 5.14 | 2.61 | a | 3.28 | a | 2.78 | 1.50 | c | 0.77 | e | 0.00 | a | 0.28 | b | 0.52 | 18.57 | ||||||
2017 | 0.81 | 0.07 | 3.30 | 1.84 | e | 5.02 | a | 3.17 | 4.75 | 2.15 | a | 2.19 | c | 0.46 | 0.10 | b | 0.10 | 23.96 | ||||||||
2018 | 1.02 | 0.76 | 0.68 | a | 2.46 | 3.83 | 2.01 | a | 4.42 | 2.16 | S | 1.03 | c | 2.97 | a | 0.39 | b | 0.17 | 21.90 | |||||||
2019 | 0.26 | 0.33 | 2.06 | 0.37 | 3.32 | 1.61 | 2.75 | 6.80 | 0.77 | 0.29 | 0.58 | 0.24 | 19.38 | |||||||||||||
2020 | 0.48 | 0.22 | 0.72 | 0.24 | 3.55 | d | 3.90 | 1.46 | 1.01 | a | 0.62 | 0.29 | 0.06 | a | 0.58 | 13.13 | ||||||||||
2021 | 0.53 | 0.30 | 3.85 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.83 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.46 | 0.45 | 1.13 | 1.84 | 3.09 | 2.89 | 2.76 | 2.51 | 1.29 | 1.14 | 0.64 | 0.39 | 18.93 | |||||||||||||
S.D. | 0.43 | 0.42 | 1.00 | 1.41 | 1.68 | 1.71 | 1.67 | 1.90 | 1.19 | 1.05 | 0.85 | 0.41 | 4.39 | |||||||||||||
SKEW | 1.46 | 1.36 | 1.11 | 1.26 | 0.83 | 1.11 | 0.65 | 1.15 | 1.20 | 1.50 | 4.18 | 1.66 | 0.08 | |||||||||||||
MAX | 2.20 | 1.92 | 4.31 | 6.04 | 8.70 | 8.17 | 7.71 | 8.57 | 5.06 | 5.07 | 6.17 | 1.92 | 28.37 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.16 | 0.60 | 0.00 | 0.11 | 0.00 | 0.00 | 0.00 | 0.00 | 8.76 | |||||||||||||
YRS | 73 | 73 | 73 | 72 | 72 | 68 | 69 | 67 | 71 | 71 | 73 | 71 | 48 |