YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.77 | ----- | z | |
1926 | 0.41 | 0.42 | 0.16 | 0.40 | 1.07 | 0.00 | 0.05 | 0.18 | 0.07 | 0.22 | 1.28 | 0.50 | 1.28 | |||||||||||||
1927 | 0.41 | 0.55 | 0.47 | 0.58 | 0.63 | 0.29 | 0.07 | 0.15 | 0.56 | 0.25 | 0.95 | j | 0.55 | 0.95 | j | |||||||||||
1928 | 0.36 | 0.36 | 0.80 | 0.63 | q | 0.08 | 0.29 | 0.05 | 0.07 | 0.29 | 0.24 | 0.57 | 0.79 | a | 0.80 | r | ||||||||||
1929 | 0.40 | 0.18 | 0.32 | 0.45 | 0.07 | 0.40 | 0.00 | 0.00 | 0.01 | 0.36 | 0.00 | 1.07 | 1.07 | |||||||||||||
1930 | 0.61 | 0.28 | 0.65 | 0.57 | 0.20 | 0.16 | 0.05 | 0.18 | 0.39 | 0.28 | 0.64 | 0.31 | 0.65 | |||||||||||||
1931 | 0.22 | 0.22 | 0.57 | 0.28 | 0.32 | 0.70 | 0.00 | 0.00 | 0.38 | 0.98 | 0.68 | 0.55 | q | 0.98 | q | |||||||||||
1932 | 0.47 | 0.26 | 0.82 | 0.44 | 0.78 | 0.76 | 0.18 | 0.01 | 0.00 | 0.18 | 0.38 | 0.42 | 0.82 | |||||||||||||
1933 | 0.41 | 0.42 | 0.63 | 0.53 | 0.41 | 0.27 | 0.45 | 0.41 | 0.22 | 1.02 | 0.04 | 0.32 | 1.02 | |||||||||||||
1934 | 0.56 | a | 0.63 | 0.50 | 0.46 | 0.42 | 0.36 | 0.00 | 2.34 | 0.25 | 0.44 | 0.72 | l | 0.20 | 2.34 | m | ||||||||||
1935 | 0.94 | a | 0.59 | 0.24 | 0.97 | q | 0.65 | 0.15 | 0.39 | 0.00 | 0.13 | 0.40 | 0.51 | 0.83 | 0.97 | r | ||||||||||
1936 | 0.92 | 0.77 | l | 0.28 | 0.40 | 0.37 | 0.32 | 0.02 | 0.83 | 0.18 | 0.00 | 0.00 | 0.55 | 0.92 | l | |||||||||||
1937 | 0.35 | 0.96 | 0.47 | 0.46 | 0.51 | 0.88 | 0.25 | 0.11 | 0.18 | 1.10 | 0.59 | 1.96 | 1.96 | |||||||||||||
1938 | 0.45 | 1.02 | 1.25 | 0.31 | 0.17 | 0.79 | 0.05 | 0.00 | 0.11 | 0.39 | 0.83 | 0.90 | 1.25 | |||||||||||||
1939 | 0.32 | 0.31 | 0.28 | 0.16 | 0.40 | 0.15 | 0.46 | 0.03 | 1.08 | 0.39 | y | 0.07 | 1.98 | 1.98 | y | |||||||||||
1940 | 0.67 | 0.73 | 1.06 | 0.19 | 0.28 | 0.08 | 0.00 | 0.24 | 0.86 | 0.89 | 0.52 | 0.50 | 1.06 | |||||||||||||
1941 | 0.84 | 0.90 | 0.22 | 0.28 | 0.51 | 0.84 | 0.16 | 0.39 | 0.46 | 0.65 | 0.38 | 1.03 | a | 1.03 | a | |||||||||||
1942 | 0.61 | 0.77 | 0.30 | 0.66 | 1.03 | 0.18 | 0.15 | 0.14 | 0.57 | 0.26 | a | 1.20 | 0.70 | 1.20 | a | |||||||||||
1943 | 0.90 | 0.57 | 0.55 | 0.75 | 0.85 | 0.51 | 0.18 | 0.35 | 0.15 | 0.40 | 0.47 | 0.32 | 0.90 | |||||||||||||
1944 | 0.47 | 0.36 | 0.47 | 0.25 | 0.25 | 0.90 | 0.36 | 0.03 | 0.77 | 0.75 | 1.30 | 0.73 | 1.30 | |||||||||||||
1945 | ----- | z | 0.99 | 0.29 | 0.30 | 0.82 | 0.61 | 0.11 | 0.00 | 0.06 | 1.42 | 0.68 | 0.60 | ----- | z | |||||||||||
1946 | 0.63 | 0.34 | 0.62 | 0.10 | 0.35 | 0.20 | 0.34 | 0.06 | 0.32 | 0.38 | 1.15 | 0.38 | a | 1.15 | a | |||||||||||
1947 | 0.48 | 0.96 | 0.49 | 0.19 | 0.45 | 0.56 | 0.32 | 0.37 | 0.37 | 0.41 | 0.36 | 0.42 | 0.96 | |||||||||||||
1948 | 0.81 | 0.31 | 1.24 | 0.33 | 0.55 | 0.58 | 0.80 | 0.08 | 0.98 | 0.35 | 0.49 | 1.47 | 1.47 | |||||||||||||
1949 | 0.32 | 0.38 | 0.35 | 0.14 | 0.79 | 0.58 | 0.00 | 0.00 | 0.15 | 0.35 | 0.39 | 0.32 | 0.79 | |||||||||||||
1950 | 0.86 | 0.55 | 0.51 | 0.25 | 0.56 | 0.44 | 0.00 | 0.05 | 0.20 | 0.79 | 0.61 | 0.87 | 0.87 | |||||||||||||
1951 | 0.39 | 0.92 | 0.40 | 0.41 | 0.91 | 0.00 | 0.00 | 0.06 | 0.41 | 0.78 | 0.57 | 0.97 | 0.97 | |||||||||||||
1952 | 0.34 | 0.40 | 0.39 | 0.33 | 0.76 | 1.19 | 1.02 | 0.00 | 0.34 | 0.07 | 0.87 | c | 0.92 | 1.19 | c | |||||||||||
1953 | 0.85 | 0.66 | 1.11 | 0.62 | 0.74 | 0.69 | 0.00 | 0.59 | 0.03 | 1.03 | 1.61 | c | 0.51 | 1.61 | c | |||||||||||
1954 | 0.56 | 0.53 | 0.61 | 0.48 | 0.49 | 0.89 | 0.00 | 0.17 | 0.17 | 0.24 | 0.47 | 0.61 | 0.89 | |||||||||||||
1955 | 0.17 | 0.20 | 0.38 | 0.67 | 0.04 | 0.06 | 0.17 | 0.09 | 0.83 | 0.47 | 2.01 | b | 1.01 | 2.01 | b | |||||||||||
1956 | 0.94 | 1.22 | 0.54 | 0.53 | 0.31 | 0.71 | 0.19 | 0.00 | 0.01 | 0.82 | e | ----- | z | ----- | z | ----- | z | |||||||||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | 0.18 | c | 0.37 | b | 0.34 | a | 0.43 | a | 0.05 | 0.02 | 0.05 | a | 0.06 | j | 0.32 | h | 0.70 | ----- | z | |||
2003 | 0.49 | 0.28 | a | 0.86 | 0.46 | 0.51 | a | 0.00 | 0.07 | 0.13 | 1.06 | a | 0.01 | 0.61 | a | 0.50 | 1.06 | d | ||||||||
2004 | 0.18 | e | 0.73 | 0.32 | a | 0.36 | a | 0.24 | 0.20 | a | 0.00 | y | 0.14 | v | 0.24 | 0.43 | b | 0.29 | 2.29 | ----- | z | |||||
2005 | 0.32 | b | 0.22 | 0.35 | a | 0.99 | a | 1.30 | b | 0.33 | 0.06 | r | ----- | z | 0.07 | w | 0.55 | 0.99 | a | 1.85 | a | ----- | z | |||
2006 | 0.45 | c | 0.78 | b | 0.19 | b | 0.77 | 0.14 | a | 0.22 | b | 0.00 | a | 0.07 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.29 | g | 0.41 | a | ----- | z |
2008 | 0.31 | 0.27 | 0.22 | 0.21 | 1.30 | 0.12 | 0.02 | a | 0.05 | b | 0.02 | 0.62 | 0.20 | 0.49 | 1.30 | c | ||||||||||
2009 | 0.21 | 0.25 | 0.37 | 0.97 | a | 0.32 | c | 0.78 | a | 0.02 | 0.92 | c | 0.00 | 0.49 | 0.28 | 0.19 | 0.97 | h | ||||||||
2010 | 0.32 | 0.18 | 0.13 | 0.22 | a | 0.27 | a | 0.29 | 0.13 | 0.25 | b | 0.11 | 0.37 | 0.44 | 0.69 | b | 0.69 | f | ||||||||
2011 | 0.50 | 0.00 | 0.45 | 0.24 | 0.42 | 0.15 | 0.13 | a | 0.00 | b | 0.07 | 0.42 | 0.24 | a | 0.50 | 0.50 | d | |||||||||
2012 | 0.96 | 0.19 | a | 0.84 | b | 0.57 | 0.31 | 0.67 | 0.00 | a | 0.00 | 0.00 | a | 0.56 | 0.72 | 0.62 | 0.96 | e | ||||||||
2013 | 0.17 | 0.05 | 0.06 | b | 0.78 | 0.28 | a | 0.60 | 0.28 | a | 0.08 | b | 0.27 | c | 0.12 | a | 0.24 | 0.09 | 0.78 | j | ||||||
2014 | 0.28 | 0.92 | 0.81 | 0.33 | a | 0.68 | a | 0.03 | a | 0.02 | 0.19 | 0.27 | 0.98 | 0.44 | 0.99 | 0.99 | c | |||||||||
2015 | 0.20 | 0.47 | 0.51 | 0.16 | b | 0.55 | 0.26 | 0.63 | 0.36 | 0.29 | 0.24 | 0.29 | 0.78 | 0.78 | b | |||||||||||
2016 | 0.77 | b | 0.18 | 0.65 | b | 0.30 | b | 0.74 | 0.83 | 0.10 | 0.00 | 0.01 | 0.54 | e | 0.23 | 0.98 | 0.98 | k | ||||||||
2017 | 0.42 | a | 0.41 | a | 0.69 | a | 0.29 | c | 0.22 | 0.25 | 0.26 | 0.32 | 0.14 | 0.51 | a | 0.71 | 0.28 | 0.71 | g | |||||||
2018 | 0.22 | 0.21 | a | 0.99 | 0.43 | c | 0.80 | a | 0.19 | 0.01 | 0.01 | a | 0.32 | 0.48 | 0.83 | a | 0.47 | a | 0.99 | h | ||||||
2019 | 0.26 | a | 0.68 | 0.36 | a | 0.80 | b | 0.38 | 0.11 | 0.03 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.49 | 0.50 | 0.52 | 0.43 | 0.51 | 0.42 | 0.17 | 0.21 | 0.30 | 0.51 | 0.60 | 0.75 | 1.11 | |||||||||||||
S.D. | 0.24 | 0.30 | 0.29 | 0.22 | 0.30 | 0.30 | 0.22 | 0.39 | 0.29 | 0.31 | 0.43 | 0.49 | 0.35 | |||||||||||||
SKEW | 0.60 | 0.55 | 0.84 | 0.79 | 0.77 | 0.49 | 2.00 | 3.99 | 1.31 | 0.79 | 1.23 | 1.53 | 0.96 | |||||||||||||
MAX | 0.96 | 1.22 | 1.25 | 0.99 | 1.30 | 1.19 | 1.02 | 2.34 | 1.08 | 1.42 | 2.01 | 2.29 | 2.01 | |||||||||||||
MIN | 0.17 | 0.00 | 0.06 | 0.10 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.50 | |||||||||||||
YRS | 46 | 46 | 48 | 46 | 48 | 48 | 45 | 44 | 45 | 44 | 42 | 46 | 27 |