YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1927 | ----- | z | 0.45 | 0.12 | ----- | z | 0.37 | 0.32 | 0.02 | 0.20 | 1.08 | t | 0.46 | w | 0.30 | m | ----- | z | ----- | z | ||||||
1928 | 0.24 | s | ----- | z | 0.34 | t | 0.14 | t | ----- | z | 0.05 | x | ----- | z | ----- | z | ----- | z | ----- | z | 0.40 | w | 0.35 | y | ----- | z |
1929 | 0.07 | a | ----- | z | 0.26 | x | 0.14 | v | 0.25 | 0.48 | 0.00 | 0.00 | ----- | z | 0.07 | 0.00 | 0.34 | d | ----- | z | ||||||
1930 | 0.18 | 0.27 | 0.20 | 0.08 | 0.65 | 0.38 | 0.02 | 0.10 | 1.16 | 0.09 | 0.39 | 0.17 | 1.16 | |||||||||||||
1931 | 0.54 | 0.21 | 0.49 | 0.01 | 0.07 | 0.21 | ----- | z | 0.00 | ----- | z | ----- | z | 0.48 | 0.72 | ----- | z | |||||||||
1932 | 0.45 | 0.18 | 0.29 | 0.40 | 0.46 | 0.63 | 0.08 | 0.00 | 0.00 | 0.10 | 0.44 | 0.95 | 0.95 | |||||||||||||
1933 | 0.28 | 0.07 | 0.33 | 0.10 | 0.28 | 0.11 | 0.01 | 0.09 | 0.22 | 0.40 | 0.29 | 0.70 | 0.70 | |||||||||||||
1934 | 0.60 | 0.12 | 0.35 | 0.25 | 0.22 | 0.19 | 0.32 | 0.60 | ----- | z | ----- | z | 0.55 | 0.15 | ----- | z | ||||||||||
1935 | 0.34 | 0.53 | 0.12 | 0.39 | ----- | z | ----- | z | 0.15 | 0.50 | ----- | z | 0.30 | 0.37 | 0.45 | ----- | z | |||||||||
1936 | 0.50 | 0.14 | ----- | z | 0.43 | 0.11 | 1.13 | 0.08 | ----- | z | 0.19 | 0.06 | ----- | z | 0.26 | ----- | z | |||||||||
1937 | 0.27 | 0.40 | 0.40 | 0.58 | 0.05 | 1.40 | 0.50 | 0.17 | 0.18 | 0.20 | 0.80 | 0.77 | 1.40 | |||||||||||||
1938 | 0.51 | 0.33 | 0.29 | y | 0.29 | 0.00 | 0.23 | 0.64 | 0.01 | 0.06 | 0.36 | 0.15 | 0.59 | 0.64 | y | |||||||||||
1939 | 0.21 | 0.55 | 0.33 | 0.31 | 0.35 | 0.28 | ----- | z | ----- | z | 0.10 | 0.43 | 0.06 | 0.50 | ----- | z | ||||||||||
1940 | 0.35 | 0.57 | 0.25 | 0.24 | 0.16 | 0.12 | 0.78 | ----- | z | 0.59 | 0.75 | 0.43 | ----- | z | ----- | z | ||||||||||
1941 | 0.40 | 0.27 | 0.25 | 0.40 | 0.77 | 0.73 | 0.55 | 0.79 | 0.67 | 0.07 | 0.50 | 0.47 | 0.79 | |||||||||||||
1942 | 0.34 | 0.56 | 0.51 | 0.46 | 0.68 | 1.27 | 0.33 | 0.00 | 0.10 | 0.25 | 0.36 | a | 0.54 | 1.27 | a | |||||||||||
1943 | 0.50 | b | 0.30 | 0.28 | 0.38 | 0.13 | 0.34 | 0.00 | 0.21 | 0.02 | 0.68 | 0.21 | 0.25 | 0.68 | b | |||||||||||
1944 | 0.48 | 0.38 | 0.13 | 0.80 | 0.15 | 0.52 | 0.00 | 0.21 | 0.30 | 0.10 | 1.15 | 0.75 | 1.15 | |||||||||||||
1945 | 0.36 | 0.27 | 0.47 | 0.35 | 0.70 | 0.30 | 0.00 | 0.18 | 0.43 | 0.44 | 0.32 | 0.40 | 0.70 | |||||||||||||
1946 | 1.05 | 0.55 | 0.23 | 0.09 | 1.30 | 0.17 | 0.10 | 0.00 | 0.35 | 0.45 | 0.40 | 0.11 | 1.30 | |||||||||||||
1947 | 0.25 | ----- | z | 0.27 | 0.35 | 0.16 | 0.37 | 0.58 | 0.10 | 0.95 | 0.55 | a | 0.15 | 0.70 | ----- | z | ||||||||||
1948 | 0.31 | 0.28 | 0.04 | 0.66 | 1.80 | 0.90 | a | 0.58 | 0.47 | a | 1.13 | 0.35 | 0.36 | 0.52 | 1.80 | b | ||||||||||
1949 | 0.08 | 0.48 | 0.47 | 0.07 | 0.22 | 0.11 | 0.00 | 0.05 | 0.21 | 0.22 | ----- | z | ----- | z | ----- | z | ||||||||||
1950 | ----- | z | ----- | z | ----- | z | 0.31 | d | 0.55 | 0.60 | 0.15 | 0.00 | 0.07 | 0.47 | a | 0.45 | 0.39 | b | ----- | z | ||||||
1951 | 0.42 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.34 | 0.62 | 0.61 | 0.44 | a | ----- | z | |||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.01 | a | 0.32 | 0.51 | ----- | z | ||
1953 | 0.47 | a | 0.16 | a | 0.39 | 0.30 | 0.45 | 0.75 | 0.00 | 0.27 | 0.13 | 0.23 | 0.24 | 0.45 | 0.75 | b | ||||||||||
1954 | 0.26 | 0.33 | ----- | z | ----- | z | ----- | z | ----- | z | 0.15 | 0.12 | a | 0.80 | 0.03 | 0.28 | 0.20 | ----- | z | |||||||
1955 | 0.20 | a | ----- | z | ----- | z | 0.25 | y | 0.15 | 0.28 | 0.27 | 0.00 | 0.37 | 0.22 | 0.49 | 0.55 | ----- | z | ||||||||
1956 | 0.50 | 0.33 | 0.15 | 0.06 | 0.15 | 0.43 | 0.06 | 0.62 | 0.00 | 0.63 | 0.24 | 0.19 | 0.63 | |||||||||||||
1957 | 0.25 | 0.31 | 0.46 | 0.25 | 0.47 | 0.34 | 0.14 | 0.11 | 0.11 | 0.40 | 0.22 | 0.35 | 0.47 | |||||||||||||
1958 | 0.52 | 0.51 | 0.17 | 0.38 | 0.56 | 1.03 | 0.12 | 0.07 | 0.17 | 0.29 | 0.64 | 0.41 | 1.03 | |||||||||||||
1959 | 1.10 | 0.18 | 0.46 | 0.16 | 0.20 | 0.28 | 0.03 | 0.07 | 0.55 | 0.27 | 0.32 | 0.27 | 1.10 | |||||||||||||
1960 | 0.42 | 0.54 | 0.39 | 0.23 | 0.47 | 0.00 | 0.00 | 0.14 | 0.80 | 0.09 | 0.88 | 0.32 | 0.88 | |||||||||||||
1961 | 0.32 | 0.49 | 0.44 | 0.65 | 0.56 | 0.38 | 0.18 | 0.20 | 0.00 | 0.20 | 0.35 | 0.45 | 0.65 | |||||||||||||
1962 | 0.15 | 0.22 | 0.28 | 0.52 | 0.21 | 0.23 | 0.04 | 0.32 | 0.28 | 0.30 | 0.27 | 0.30 | 0.52 | |||||||||||||
1963 | 0.12 | 0.40 | 0.33 | 0.65 | 0.24 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.60 | ----- | z | ||||||
1964 | 0.15 | 0.00 | ----- | z | 0.20 | 0.00 | ----- | z | ----- | z | ----- | z | 0.13 | 0.07 | 0.35 | 0.27 | o | ----- | z | |||||||
1965 | 0.96 | 0.13 | 0.00 | 0.34 | ----- | z | 0.51 | 0.87 | 0.16 | 0.08 | ----- | z | 0.77 | 0.80 | ----- | z | ||||||||||
1966 | 2.05 | a | ----- | z | 0.42 | 0.12 | 0.15 | 0.38 | 0.60 | ----- | z | 0.27 | 0.30 | 1.08 | 0.60 | ----- | z | |||||||||
1967 | 0.34 | 0.19 | 0.25 | 0.42 | 0.65 | 0.66 | 0.00 | 0.00 | 0.06 | 0.34 | 0.30 | ----- | z | ----- | z | |||||||||||
1968 | ----- | z | 0.38 | 0.03 | 0.45 | 0.18 | 0.13 | 0.28 | 0.62 | 0.16 | 0.32 | 0.61 | 0.90 | i | ----- | z | ||||||||||
1969 | ----- | z | 0.54 | k | 0.02 | 0.52 | 0.51 | 0.23 | 0.13 | 0.00 | 0.35 | 0.17 | 0.35 | 0.57 | ----- | z | ||||||||||
1970 | 0.38 | 0.63 | 0.42 | 0.15 | 0.17 | 0.13 | 0.09 | 0.00 | 0.22 | 0.37 | 0.38 | 0.35 | 0.63 | |||||||||||||
1971 | 0.94 | 0.30 | 0.63 | 0.21 | 0.40 | 0.34 | 0.12 | 0.03 | 0.78 | 0.47 | 0.29 | 0.35 | 0.94 | |||||||||||||
1972 | 0.03 | 0.10 | 0.20 | 0.50 | 0.97 | 0.60 | 0.06 | 0.35 | 0.15 | 0.15 | 0.25 | 0.35 | 0.97 | |||||||||||||
1973 | 0.22 | 0.10 | 0.21 | 0.05 | 0.21 | 0.15 | g | 0.04 | 0.05 | 0.42 | 0.29 | a | 0.70 | 0.58 | 0.70 | h | ||||||||||
1974 | 0.38 | 0.40 | 0.35 | 0.45 | 0.28 | 0.00 | 0.63 | 0.04 | 0.06 | 0.02 | 0.66 | a | 0.65 | 0.66 | a | |||||||||||
1975 | 0.38 | 0.29 | 0.40 | 0.46 | 0.46 | 0.40 | 1.40 | 0.27 | 0.01 | 0.44 | 0.30 | 0.25 | 1.40 | |||||||||||||
1976 | 0.19 | 0.09 | 0.38 | 0.30 | 0.17 | 0.15 | 0.11 | 0.40 | a | 0.06 | 0.20 | 0.16 | 0.08 | 0.40 | a | |||||||||||
1977 | 0.20 | 0.16 | 0.22 | 0.00 | 0.26 | 0.30 | 0.08 | 0.31 | 0.19 | 0.17 | 0.26 | 0.55 | 0.55 | |||||||||||||
1978 | 0.36 | 0.34 | 0.44 | 0.77 | 0.72 | 0.27 | 1.10 | 0.37 | 0.34 | 0.00 | 0.09 | 0.41 | 1.10 | |||||||||||||
1979 | 0.30 | 0.32 | 0.24 | 0.25 | 0.29 | 0.25 | 0.21 | 0.59 | 1.81 | 0.33 | 0.70 | 0.52 | 1.81 | |||||||||||||
1980 | 0.39 | 0.53 | b | 0.27 | 0.52 | 0.75 | 0.22 | 0.05 | 0.23 | 0.87 | 0.32 | 0.61 | 0.48 | 0.87 | b | |||||||||||
1981 | 0.14 | 0.80 | 0.28 | 0.03 | 0.53 | 0.28 | 0.32 | 0.00 | 0.25 | 0.43 | 0.30 | 0.31 | 0.80 | |||||||||||||
1982 | 0.30 | 0.22 | 0.62 | 0.24 | x | 0.18 | 0.58 | 0.16 | 0.13 | 0.22 | 0.27 | 0.45 | 1.05 | a | 1.05 | y | ||||||||||
1983 | 0.50 | 0.43 | 0.83 | 0.38 | 0.31 | 0.53 | 0.58 | 0.10 | 0.40 | 0.51 | 0.62 | 0.65 | l | 0.83 | l | |||||||||||
1984 | 1.40 | a | 0.50 | c | 0.51 | 0.31 | 0.32 | 1.34 | 0.38 | 0.12 | 0.27 | 0.23 | 0.96 | e | ----- | z | ----- | z | ||||||||
1985 | ----- | z | 0.00 | d | 0.15 | 0.00 | 0.17 | 0.16 | 0.06 | 0.00 | 0.45 | 0.04 | e | 0.11 | e | ----- | z | ----- | z | |||||||
1986 | 0.77 | b | 0.65 | b | 0.50 | 0.85 | 0.18 | 0.00 | 0.15 | 0.10 | 0.76 | 0.49 | 0.77 | 0.00 | b | 0.85 | f | |||||||||
1987 | 0.00 | a | 1.33 | 0.48 | 0.16 | 0.54 | 1.78 | 0.27 | 0.81 | 0.00 | 0.00 | 0.20 | a | 0.59 | 1.78 | b | ||||||||||
1988 | 0.68 | 0.00 | 0.26 | 0.60 | 0.71 | 0.46 | 0.00 | 0.00 | 0.50 | 0.07 | 0.50 | 0.35 | c | 0.71 | c | |||||||||||
1989 | 0.00 | c | 0.36 | b | 0.30 | b | 0.50 | 1.34 | 0.18 | 0.07 | 0.56 | 0.00 | 0.29 | 0.38 | ----- | z | ----- | z | ||||||||
1990 | 0.40 | b | 0.25 | a | 0.38 | a | 0.20 | 0.51 | 0.16 | 0.56 | 0.96 | 0.00 | 0.47 | ----- | z | ----- | z | ----- | z | |||||||
1991 | 0.80 | c | 0.25 | 0.70 | b | 0.30 | 0.46 | 0.29 | a | 0.77 | ----- | z | 0.00 | 0.20 | 0.44 | 0.00 | p | ----- | z | |||||||
1992 | ----- | z | 0.27 | 0.12 | 0.85 | 0.15 | 0.50 | 1.38 | a | 0.00 | 0.05 | 0.70 | 0.59 | c | 0.00 | f | ----- | z | ||||||||
1993 | ----- | z | 0.00 | c | 0.43 | 0.50 | c | 0.26 | 0.82 | c | 0.77 | l | 0.70 | 0.20 | 0.00 | 0.00 | d | 0.80 | a | ----- | z | |||||
1994 | 0.23 | ----- | z | 0.16 | 0.40 | ----- | z | 0.55 | 0.00 | 0.04 | 0.00 | 0.78 | 0.90 | b | 0.10 | c | ----- | z | ||||||||
1995 | 0.85 | a | 0.45 | 0.77 | 0.75 | 0.30 | 0.52 | 0.11 | i | ----- | z | 0.37 | 0.22 | 1.10 | a | 0.70 | c | ----- | z | |||||||
1996 | 0.00 | f | 0.63 | a | 0.62 | a | 0.33 | 0.64 | 0.32 | 0.23 | j | 1.08 | ----- | z | 0.62 | 0.15 | m | 1.00 | j | ----- | z | |||||
1997 | 0.48 | c | 0.78 | g | 0.59 | 0.46 | 0.55 | 0.35 | ----- | z | 0.40 | 0.38 | 0.44 | e | ----- | z | ----- | z | ----- | z | ||||||
1998 | 0.30 | c | 0.66 | b | 0.83 | i | 0.28 | 0.65 | 0.24 | 1.00 | ----- | z | 0.28 | 0.18 | 0.39 | 0.95 | a | ----- | z | |||||||
1999 | 0.45 | a | 1.70 | a | 0.25 | a | 0.35 | 0.43 | 0.30 | 0.43 | i | 0.52 | 0.00 | 0.39 | a | 0.38 | 0.36 | l | 1.70 | y | ||||||
2000 | 0.00 | c | 0.35 | 0.30 | i | 0.20 | 0.48 | 0.45 | 0.32 | 0.00 | 0.20 | 0.32 | 0.92 | c | 0.00 | c | 0.92 | r | ||||||||
2001 | ----- | z | 0.30 | 0.65 | 0.27 | 0.25 | 0.32 | 0.00 | 0.08 | 0.04 | 0.55 | 0.70 | a | ----- | z | ----- | z | |||||||||
2002 | 0.00 | a | 0.00 | 0.00 | a | 0.69 | 0.54 | 0.29 | 0.00 | 0.00 | 0.14 | 0.10 | 0.50 | ----- | z | ----- | z | |||||||||
2003 | 0.94 | b | 0.00 | 0.30 | 0.54 | ----- | z | 0.06 | 0.00 | ----- | z | 0.32 | 0.28 | ----- | z | ----- | z | ----- | z | |||||||
2004 | ----- | z | ----- | z | 0.30 | 0.30 | 0.20 | b | 0.38 | 0.14 | a | 0.50 | a | 0.27 | 1.18 | a | 0.15 | 0.65 | ----- | z | ||||||
2005 | 1.50 | 0.00 | a | 0.55 | g | 0.30 | b | 1.13 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.54 | v | 0.69 | b | ----- | z |
2013 | 0.28 | k | 0.10 | b | 0.20 | j | 0.41 | a | 0.30 | i | 0.44 | o | 0.00 | 0.22 | d | 0.23 | 0.01 | 0.32 | 1.00 | ----- | z | |||||
2014 | 0.37 | a | 0.43 | d | 0.50 | 0.45 | 0.11 | 0.29 | 0.02 | 0.33 | 0.24 | 0.54 | a | 0.49 | 0.51 | 0.54 | f | |||||||||
2015 | 0.64 | d | 0.28 | a | 0.88 | a | 0.28 | 0.56 | e | 0.00 | a | 0.00 | e | 0.00 | c | 0.06 | a | 0.10 | o | 0.18 | a | 1.10 | a | ----- | z | |
2016 | 0.45 | 0.21 | c | 0.95 | 0.18 | 0.22 | d | 0.00 | y | 0.07 | f | 0.00 | o | 0.25 | q | 0.77 | 0.28 | 0.34 | a | ----- | z | |||||
2017 | 0.62 | 0.94 | a | 0.48 | a | 0.60 | a | 0.32 | j | 0.18 | b | 0.00 | b | 0.00 | h | 0.00 | f | 0.55 | c | 0.35 | c | 0.34 | b | ----- | z | |
2018 | 0.64 | a | 0.20 | d | 0.40 | k | 0.52 | b | 0.23 | c | 0.01 | e | 0.00 | g | 0.00 | l | 0.01 | 0.25 | 0.23 | 0.48 | ----- | z | ||||
2019 | 0.35 | 0.18 | 0.16 | 0.22 | 0.83 | 0.11 | 0.62 | 0.60 | 0.57 | 0.36 | 0.12 | 0.23 | 0.83 | |||||||||||||
2020 | 0.25 | 0.15 | 0.30 | 0.12 | 0.44 | 0.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.45 | 0.35 | 0.35 | 0.36 | 0.41 | 0.41 | 0.26 | 0.24 | 0.30 | 0.32 | 0.43 | 0.48 | 0.95 | |||||||||||||
S.D. | 0.35 | 0.28 | 0.20 | 0.21 | 0.31 | 0.34 | 0.33 | 0.26 | 0.33 | 0.22 | 0.26 | 0.25 | 0.38 | |||||||||||||
SKEW | 1.97 | 2.14 | 0.67 | 0.40 | 1.85 | 1.81 | 1.66 | 1.23 | 2.02 | 0.92 | 0.86 | 0.40 | 0.87 | |||||||||||||
MAX | 2.05 | 1.70 | 0.95 | 0.85 | 1.80 | 1.78 | 1.40 | 1.08 | 1.81 | 1.18 | 1.15 | 1.10 | 1.81 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | |||||||||||||
YRS | 74 | 75 | 72 | 79 | 76 | 76 | 71 | 69 | 74 | 78 | 76 | 66 | 33 |