YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.70 | p | 0.56 | 1.08 | 0.17 | 0.23 | 0.25 | ----- | z | |||||
1924 | 0.40 | 0.04 | 0.46 | 0.47 | a | 0.47 | 1.64 | 1.05 | 0.85 | 0.95 | 0.53 | 0.14 | a | 0.27 | 1.64 | b | ||||||||||
1925 | 0.22 | 0.36 | 0.53 | 1.15 | 0.84 | 0.64 | 0.52 | 0.67 | 2.12 | 0.38 | 0.41 | 0.34 | 2.12 | |||||||||||||
1926 | 0.28 | 0.20 | 0.21 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.10 | 0.18 | ----- | z | ----- | z | ----- | z | ||
1931 | ----- | z | ----- | z | ----- | z | 0.25 | 0.41 | 1.12 | 0.90 | 0.70 | 0.70 | 0.62 | 0.70 | 0.28 | ----- | z | |||||||||
1932 | 0.18 | 0.30 | 0.15 | 0.70 | 0.70 | 0.58 | 0.80 | 1.20 | 0.56 | 0.50 | ----- | z | ----- | z | ----- | z | ||||||||||
1933 | ----- | z | ----- | z | ----- | z | 0.40 | 0.55 | 0.93 | 0.85 | 0.84 | 0.47 | 0.28 | ----- | z | ----- | z | ----- | z | |||||||
1934 | ----- | z | ----- | z | ----- | z | ----- | z | 1.30 | 1.32 | 0.72 | 0.92 | 0.71 | 1.59 | ----- | z | ----- | z | ----- | z | ||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.31 | 0.65 | 0.54 | 1.28 | 0.66 | ----- | z | ----- | z | ----- | z | |||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | 1.36 | v | 0.15 | 0.69 | 0.65 | 1.24 | 0.99 | u | 0.24 | ----- | z | ----- | z | ----- | z | |||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.58 | a | 0.24 | a | 0.27 | k | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | 0.27 | 1.46 | 0.90 | 0.85 | 2.29 | 0.37 | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
1950 | ----- | z | ----- | z | ----- | z | 0.65 | g | 0.98 | d | 3.15 | a | 0.40 | 1.29 | 0.87 | 0.90 | j | ----- | z | ----- | z | ----- | z | |||
1951 | ----- | z | ----- | z | ----- | z | 0.42 | 0.35 | 0.73 | 1.89 | 1.12 | a | 1.06 | 0.46 | ----- | z | ----- | z | ----- | z | ||||||
1952 | ----- | z | ----- | z | ----- | z | 0.39 | 0.72 | 1.26 | 0.84 | j | 1.27 | 0.10 | 0.11 | ----- | z | ----- | z | ----- | z | ||||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 0.93 | 0.17 | 0.35 | 0.54 | ----- | z | ||||
1964 | 0.16 | 0.21 | 0.27 | 0.81 | 0.80 | 2.74 | 0.95 | 0.79 | 1.41 | 0.16 | 0.14 | 0.21 | 2.74 | |||||||||||||
1965 | 0.15 | 0.24 | 0.40 | 0.88 | 1.96 | 0.70 | 0.66 | 0.80 | 0.93 | a | 2.33 | 0.80 | 0.67 | 2.33 | a | |||||||||||
1966 | 0.39 | 0.52 | 0.76 | 0.40 | 0.34 | 0.63 | ----- | z | 3.40 | 0.50 | 0.97 | 0.21 | 0.48 | ----- | z | |||||||||||
1967 | 0.32 | e | 0.26 | 0.35 | 0.77 | 0.46 | 1.26 | 0.30 | 0.41 | 0.41 | 0.43 | 0.29 | 0.36 | 1.26 | e | |||||||||||
1968 | 0.23 | b | 0.00 | 0.30 | 0.72 | ----- | z | 1.65 | 1.53 | 1.75 | 1.56 | 1.05 | 0.07 | 0.27 | ----- | z | ||||||||||
1969 | 0.46 | 0.26 | 0.00 | 0.37 | a | 2.37 | 0.52 | 1.63 | 0.84 | 0.82 | 0.99 | ----- | z | 0.37 | ----- | z | ||||||||||
1970 | 0.08 | 0.20 | 0.44 | 1.57 | a | 1.12 | 1.47 | 0.90 | 1.21 | 1.21 | 1.44 | 0.31 | 0.29 | 1.57 | a | |||||||||||
1971 | 0.42 | 0.17 | 0.16 | 0.62 | 0.69 | 1.56 | 1.64 | 0.50 | 0.83 | 2.18 | 0.78 | a | 0.18 | 2.18 | a | |||||||||||
1972 | 0.43 | 0.21 | 0.21 | 1.28 | 0.41 | 0.91 | 2.95 | 1.08 | 0.72 | 0.55 | 0.41 | 0.49 | 2.95 | |||||||||||||
1973 | 0.08 | 0.12 | 0.68 | 0.44 | 0.44 | 0.84 | 0.91 | 3.10 | 1.37 | 0.85 | 0.55 | 0.23 | 3.10 | |||||||||||||
1974 | 0.28 | ----- | z | 0.24 | 0.74 | 1.08 | 1.63 | 0.52 | 2.41 | 0.11 | 0.94 | 0.13 | m | 0.45 | d | ----- | z | |||||||||
1975 | 0.70 | 0.15 | 0.19 | ----- | z | 0.75 | ----- | z | ----- | z | 1.47 | 0.70 | 0.65 | 0.49 | 0.23 | ----- | z | |||||||||
1976 | ----- | z | 0.28 | a | 0.73 | 0.17 | 0.16 | 2.15 | 1.32 | 0.78 | 0.37 | 0.33 | 0.01 | 0.31 | ----- | z | ||||||||||
1977 | 0.34 | 0.84 | 0.35 | 0.16 | 1.35 | 0.94 | 1.26 | 1.06 | 1.78 | 0.74 | 1.16 | 0.51 | 1.78 | |||||||||||||
1978 | 0.31 | c | 0.24 | 0.10 | 0.57 | 0.83 | 1.80 | 1.55 | 0.82 | 0.64 | ----- | z | 0.78 | a | 0.40 | ----- | z | |||||||||
1979 | ----- | z | 0.31 | i | 0.47 | 1.09 | 0.52 | f | 2.17 | 1.95 | 1.33 | 0.77 | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
1980 | ----- | z | ----- | z | 0.14 | b | 0.08 | 0.33 | 0.77 | 0.81 | ----- | z | ----- | z | ----- | z | 0.64 | a | ----- | z | ----- | z | ||||
1981 | ----- | z | 0.09 | ----- | z | 0.59 | 1.00 | 3.00 | 1.96 | ----- | z | 1.35 | 0.58 | 0.46 | 0.31 | ----- | z | |||||||||
1982 | 0.33 | 0.37 | a | 0.47 | x | 0.57 | 0.81 | s | 1.15 | 1.33 | 1.12 | 1.72 | 1.10 | 0.44 | a | 0.09 | e | ----- | z | |||||||
1983 | 0.07 | 0.48 | b | 0.45 | a | 0.52 | 0.53 | d | 1.66 | 0.80 | b | 2.00 | 0.96 | 0.73 | 0.49 | 0.23 | e | 2.00 | n | |||||||
1984 | 0.18 | 0.43 | a | 0.11 | 0.41 | a | 0.48 | 1.62 | 1.25 | 1.14 | 0.23 | d | 1.45 | 0.32 | 0.32 | 1.62 | f | |||||||||
1985 | ----- | z | 0.22 | 0.33 | 1.11 | 2.48 | 1.88 | 0.51 | a | 0.85 | a | 1.27 | 1.10 | 0.62 | 0.18 | ----- | z | |||||||||
1986 | 0.33 | a | 0.23 | a | 0.15 | 1.00 | 0.55 | 1.48 | a | 1.05 | 0.46 | l | 0.88 | d | ----- | 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 | 1.45 | 1.00 | 0.51 | 0.42 | c | 0.15 | ----- | z | ||||
1992 | 0.34 | 0.23 | 0.82 | a | 0.52 | c | 0.49 | a | 0.92 | 1.72 | 2.07 | b | 1.24 | 0.13 | a | 0.38 | 0.19 | 2.07 | h | |||||||
1993 | 0.07 | 0.05 | 0.05 | a | 0.34 | 0.90 | 2.69 | 2.19 | 1.00 | 0.58 | 0.40 | 0.27 | b | 0.10 | 2.69 | c | ||||||||||
1994 | 0.10 | 0.19 | c | 0.25 | a | 0.35 | 0.80 | 1.28 | 1.93 | 2.20 | 1.17 | 0.39 | 0.60 | a | 0.14 | 2.20 | e | |||||||||
1995 | 0.47 | 0.14 | 0.33 | 0.36 | c | 0.36 | 0.93 | 2.13 | 2.25 | 2.12 | 0.83 | 0.36 | e | 0.37 | c | 2.25 | k | |||||||||
1996 | 0.60 | a | 0.42 | d | 0.26 | c | 0.44 | a | 0.74 | 1.08 | 1.67 | 0.85 | 0.83 | 1.46 | a | 0.86 | d | 0.56 | d | 1.67 | r | |||||
1997 | 0.20 | b | 0.06 | d | 0.40 | 1.01 | a | 0.54 | b | 0.78 | 1.49 | 0.53 | 1.00 | 1.36 | 0.40 | d | 0.13 | b | 1.49 | o | ||||||
1998 | 0.22 | d | 0.23 | b | 0.13 | c | 0.25 | 1.85 | 0.74 | 0.91 | 1.88 | 0.50 | 1.79 | d | 0.96 | c | 0.20 | c | 1.88 | s | ||||||
1999 | 0.21 | c | 0.15 | b | 0.94 | a | 0.75 | 1.75 | 0.90 | 1.28 | 1.40 | 1.01 | 0.50 | 0.00 | k | 0.13 | 1.75 | q | ||||||||
2000 | 0.14 | f | 0.14 | a | 0.39 | a | 0.69 | 0.46 | 1.28 | b | 1.40 | 1.62 | 0.57 | 0.39 | a | 0.92 | k | 0.17 | e | ----- | z | |||||
2001 | 0.10 | a | 0.80 | e | 0.12 | 1.11 | 1.06 | 0.71 | 1.05 | 4.65 | 0.77 | 0.73 | 0.93 | 0.14 | c | 4.65 | i | |||||||||
2002 | 0.11 | n | 0.06 | g | 0.35 | e | 0.52 | b | 0.52 | 2.46 | 0.97 | 2.25 | 0.23 | 0.68 | h | 0.10 | d | 0.25 | q | ----- | z | |||||
2003 | 0.06 | c | 0.12 | c | 0.18 | 0.38 | b | 0.51 | 1.90 | 1.35 | 0.47 | 0.70 | 0.74 | e | 0.48 | c | 0.31 | b | 1.90 | r | ||||||
2004 | 0.27 | f | 0.14 | k | 0.20 | b | 0.35 | 2.20 | 0.35 | i | 1.49 | 0.61 | 1.38 | 1.68 | 0.08 | a | 0.79 | e | ----- | z | ||||||
2005 | 0.31 | a | 0.18 | n | 0.05 | b | 0.12 | i | 1.93 | 2.50 | f | 0.96 | 0.73 | 0.63 | 1.78 | i | 0.98 | b | 0.29 | e | ----- | z | ||||
2006 | 0.32 | d | 0.32 | b | 0.81 | a | 0.77 | b | 0.82 | a | 0.68 | 0.30 | 1.32 | 0.43 | 0.61 | 0.56 | h | 0.56 | b | 1.32 | t | |||||
2007 | 0.12 | e | 0.81 | e | 0.40 | a | 0.54 | 1.20 | 1.44 | 1.08 | 0.72 | 0.71 | 1.21 | 0.22 | k | 0.32 | 1.44 | v | ||||||||
2008 | 0.07 | 0.13 | c | 0.18 | a | 1.92 | d | 0.85 | 1.30 | 0.40 | 0.96 | b | 1.40 | y | 1.06 | 0.71 | l | 0.29 | f | ----- | z | |||||
2009 | 0.29 | g | 0.26 | 1.32 | 0.57 | 0.75 | 0.41 | 0.79 | 1.57 | 0.94 | 1.07 | 0.23 | h | 0.50 | c | 1.57 | r | |||||||||
2010 | 0.40 | d | 0.11 | 0.20 | 0.80 | b | 0.73 | 1.14 | 1.94 | 0.82 | 1.90 | b | 1.23 | 0.18 | i | 0.50 | 1.94 | q | ||||||||
2011 | 0.38 | x | ----- | z | ----- | z | 1.59 | v | 0.53 | s | 1.45 | k | 0.44 | w | 0.65 | v | 0.41 | u | 0.21 | v | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | 1.07 | v | ----- | z | 0.47 | k | 0.38 | v | 1.61 | w | 0.54 | w | 0.21 | a | 1.09 | a | 0.30 | m | 0.27 | ----- | z | |
2013 | 0.55 | a | 0.61 | b | ----- | z | 0.48 | f | 1.08 | 1.02 | 1.34 | 0.77 | a | 0.78 | 0.72 | 0.35 | i | 0.95 | d | ----- | z | |||||
2014 | 0.21 | 0.30 | b | 0.60 | 0.83 | 1.80 | 3.46 | 1.47 | a | 0.65 | d | 0.98 | 0.51 | b | 0.12 | b | 0.17 | c | 3.46 | n | ||||||
2015 | 0.43 | 0.28 | 0.19 | m | 0.17 | b | 2.13 | 0.93 | 1.16 | a | 4.48 | 1.10 | 1.02 | 1.27 | 0.55 | 4.48 | p | |||||||||
2016 | 0.10 | 0.16 | 0.17 | a | 0.61 | 0.46 | a | 4.13 | 0.92 | c | 2.56 | b | 1.46 | f | 0.36 | 0.23 | 0.50 | a | 4.13 | n | ||||||
2017 | 0.38 | 0.68 | 0.33 | 0.30 | 0.37 | 1.48 | 0.31 | a | 1.25 | a | 0.94 | 0.85 | 0.31 | 0.43 | 1.48 | b | ||||||||||
2018 | 0.30 | c | 0.30 | v | ----- | z | ----- | z | 0.81 | u | 1.60 | r | 1.65 | v | 0.88 | w | 3.70 | r | 0.82 | n | 0.41 | s | ----- | z | ----- | z |
2019 | 0.25 | a | 0.40 | b | 0.70 | b | 0.51 | 1.32 | g | 1.60 | d | 1.80 | d | 0.97 | a | 1.19 | 1.03 | 0.37 | b | 0.67 | b | 1.80 | y | |||
2020 | 0.30 | 0.05 | a | 0.17 | 0.50 | 0.58 | a | 1.25 | 1.27 | 1.92 | a | 0.39 | a | 0.65 | 0.21 | 0.26 | a | 1.92 | e | |||||||
2021 | 0.33 | k | 0.01 | d | 0.05 | 1.00 | 0.38 | d | 0.67 | e | 0.33 | 0.79 | 3.01 | d | 1.23 | j | 1.07 | c | 0.89 | k | ----- | z | ||||
2022 | 0.22 | 0.30 | 0.01 | 2.68 | a | 1.01 | 0.67 | 0.93 | a | 0.78 | 0.07 | s | 0.43 | f | 0.61 | 1.10 | a | ----- | z | |||||||
2023 | 0.12 | 0.15 | 0.51 | g | 0.82 | 0.73 | 0.66 | 0.42 | 0.85 | 0.96 | 0.60 | 0.25 | 0.88 | 0.96 | g | |||||||||||
2024 | 0.15 | 0.66 | a | ----- | z | 0.04 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.27 | 0.28 | 0.34 | 0.67 | 0.90 | 1.35 | 1.15 | 1.33 | 0.94 | 0.80 | 0.48 | 0.37 | 2.23 | |||||||||||||
S.D. | 0.15 | 0.21 | 0.27 | 0.45 | 0.58 | 0.78 | 0.56 | 0.87 | 0.54 | 0.50 | 0.31 | 0.22 | 0.58 | |||||||||||||
SKEW | 0.63 | 1.23 | 1.39 | 2.13 | 1.19 | 1.47 | 0.62 | 1.95 | 1.19 | 0.97 | 0.74 | 1.29 | 0.12 | |||||||||||||
MAX | 0.70 | 0.84 | 1.32 | 2.68 | 2.48 | 4.13 | 2.95 | 4.65 | 3.01 | 2.33 | 1.27 | 1.10 | 3.10 | |||||||||||||
MIN | 0.06 | 0.00 | 0.00 | 0.08 | 0.15 | 0.31 | 0.30 | 0.41 | 0.10 | 0.11 | 0.01 | 0.09 | 1.48 | |||||||||||||
YRS | 48 | 51 | 51 | 57 | 59 | 61 | 61 | 64 | 65 | 59 | 46 | 53 | 11 |