YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1929 | 1.12 | 0.26 | 0.54 | 1.80 | 1.97 | 0.62 | 2.21 | 1.66 | 1.47 | 4.75 | 0.62 | 0.29 | 17.31 | |||||||||||||
1930 | 0.23 | 0.43 | a | 0.05 | 2.30 | 2.64 | 1.30 | 3.18 | 2.58 | 0.33 | 2.18 | 1.72 | 0.13 | 17.07 | ||||||||||||
1931 | 0.13 | 0.64 | 0.97 | 1.44 | 1.44 | 4.23 | s | 2.45 | 2.49 | 1.11 | 2.52 | 0.78 | 0.51 | 14.48 | a | |||||||||||
1932 | 0.55 | 0.01 | 0.43 | 2.33 | 3.52 | 2.93 | 2.79 | 2.32 | 0.68 | 1.38 | 0.28 | 0.14 | 17.36 | |||||||||||||
1933 | 0.31 | 0.18 | 0.45 | 1.70 | 2.40 | 2.32 | 3.80 | 0.72 | 0.59 | 0.13 | 0.39 | 0.39 | 13.38 | |||||||||||||
1934 | 0.10 | 0.02 | a | 0.54 | 0.66 | 0.34 | 3.46 | 2.50 | 1.29 | 1.64 | 1.22 | 0.57 | 0.26 | 12.60 | ||||||||||||
1935 | 0.41 | 0.27 | 2.08 | 3.30 | 1.90 | 3.81 | 2.67 | 5.86 | 0.19 | 0.16 | 0.39 | 0.77 | 21.81 | |||||||||||||
1936 | 0.11 | 0.83 | 0.28 | 1.11 | 1.21 | 2.88 | 0.23 | 0.46 | 0.79 | 0.12 | 0.48 | 0.64 | 9.14 | |||||||||||||
1937 | 1.71 | 0.77 | 1.44 | b | 3.09 | 1.59 | 2.20 | 1.10 | 2.18 | t | 0.88 | y | 0.15 | 0.18 | a | 0.89 | 13.12 | b | ||||||||
1938 | 0.38 | ----- | z | ----- | z | 1.85 | 1.79 | a | 2.06 | 1.88 | 1.12 | x | 1.35 | 0.03 | 0.40 | 0.19 | 9.93 | c | ||||||||
1939 | 0.69 | a | 0.55 | a | 0.25 | 0.92 | 1.69 | 7.30 | 2.11 | 1.54 | 0.69 | 1.50 | 0.00 | 0.08 | 17.32 | |||||||||||
1940 | 0.01 | 0.38 | 1.25 | 2.29 | 1.63 | 1.84 | 2.44 | 4.44 | 0.24 | 1.90 | 0.60 | 0.74 | 17.76 | |||||||||||||
1941 | 0.71 | 0.13 | 0.41 | 4.03 | 2.33 | 6.06 | 1.26 | 2.37 | 3.82 | b | 1.61 | 0.26 | ----- | z | 22.99 | a | ||||||||||
1942 | 0.00 | 0.12 | 2.52 | 1.79 | 4.73 | 4.50 | 1.98 | 4.61 | 2.65 | 1.41 | 0.19 | 0.63 | 25.13 | |||||||||||||
1943 | 0.70 | 1.91 | 1.50 | 0.70 | 2.40 | 7.56 | 2.41 | 2.50 | 0.65 | 1.46 | 0.57 | 0.06 | 22.42 | |||||||||||||
1944 | 0.48 | 0.27 | a | 0.46 | 0.96 | 4.58 | 7.00 | 7.33 | 3.05 | 1.16 | 0.73 | 1.76 | 0.00 | 27.78 | ||||||||||||
1945 | 0.28 | 1.31 | 1.03 | 2.55 | 1.45 | 2.29 | 1.05 | 0.79 | 2.30 | 0.12 | 0.07 | 0.65 | 13.89 | |||||||||||||
1946 | 0.10 | 2.02 | 1.74 | 1.97 | 1.08 | 2.74 | 3.18 | 1.54 | 3.00 | 2.89 | 1.58 | 0.47 | 22.31 | |||||||||||||
1947 | 0.19 | 0.41 | 0.33 | 2.25 | 1.43 | 4.76 | 1.43 | 0.93 | 0.64 | 1.47 | 2.74 | 0.37 | 16.95 | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.86 | a | 0.45 | 1.06 | 1.21 | 1.33 | 0.35 | 8.26 | f | |||||
1949 | 0.47 | 0.32 | 0.57 | 0.41 | 2.86 | 3.42 | 3.17 | 0.19 | a | 0.51 | 1.93 | 0.45 | 0.74 | 15.04 | ||||||||||||
1950 | 1.26 | b | 0.12 | 1.25 | 1.07 | 6.12 | 0.36 | 2.03 | 0.45 | 1.60 | 1.10 | 0.22 | 0.83 | 16.41 | ||||||||||||
1951 | 0.52 | 0.17 | 0.96 | 1.18 | 1.92 | 3.51 | 2.55 | 3.89 | 1.16 | 2.34 | 0.12 | 1.30 | 19.62 | |||||||||||||
1952 | 0.96 | 1.08 | 0.62 | 0.79 | 0.96 | 2.38 | 1.89 | 1.57 | 0.39 | 0.17 | 1.14 | 0.61 | 12.56 | |||||||||||||
1953 | 0.42 | 0.89 | 0.48 | 4.04 | 5.42 | 7.28 | 1.04 | 2.16 | 0.48 | 0.70 | 0.97 | 0.78 | 24.66 | |||||||||||||
1954 | 0.61 | 0.10 | 1.41 | 1.25 | 1.69 | 1.40 | 2.29 | 0.88 | 2.41 | 0.94 | 0.13 | 0.45 | 13.56 | |||||||||||||
1955 | 0.31 | 0.86 | 0.35 | 0.51 | 2.20 | 2.10 | 4.70 | 2.61 | 1.07 | 0.12 | 0.23 | 0.51 | 15.57 | |||||||||||||
1956 | 0.91 | 0.45 | 1.45 | 1.04 | 2.24 | 2.09 | 3.92 | 2.00 | 0.69 | 2.14 | 1.77 | 0.44 | 19.14 | |||||||||||||
1957 | 0.40 | 0.41 | 0.11 | 3.73 | 3.32 | 2.82 | 4.13 | 2.67 | 3.97 | 1.22 | 0.93 | 0.49 | 24.20 | |||||||||||||
1958 | 0.37 | 1.22 | 0.23 | 2.74 | 1.48 | 4.14 | 2.07 | 1.49 | 0.94 | 0.73 | 1.22 | 0.09 | 16.72 | |||||||||||||
1959 | 0.08 | 0.58 | 0.12 | 0.76 | 2.33 | 2.00 | 2.33 | 5.08 | 2.18 | 2.28 | 0.88 | 0.41 | 19.03 | |||||||||||||
1960 | 1.15 | 0.46 | 0.51 | 3.25 | 3.81 | 3.42 | 1.68 | 11.41 | 1.77 | 0.92 | 0.60 | 0.66 | 29.64 | |||||||||||||
1961 | 0.07 | 0.49 | 0.27 | 1.86 | 2.32 | 2.03 | 3.25 | 1.67 | 4.72 | 2.51 | 0.08 | 0.80 | 20.07 | |||||||||||||
1962 | 0.83 | 1.43 | 0.93 | 1.10 | 5.94 | 3.77 | 8.43 | 1.43 | 3.72 | a | 0.75 | 0.36 | 0.15 | 28.84 | ||||||||||||
1963 | 0.28 | 0.50 | 0.58 | 1.85 | 3.61 | 2.92 | 1.76 | 3.42 | 1.47 | 0.69 | 0.18 | 0.43 | 17.69 | |||||||||||||
1964 | 0.47 | 0.30 | 0.84 | 3.68 | 2.40 | 6.41 | 3.02 | 2.43 | 1.44 | 0.08 | 0.50 | 0.59 | 22.16 | |||||||||||||
1965 | 0.34 | 0.33 | 1.00 | 3.83 | 3.96 | 2.30 | 2.47 | 1.97 | 3.24 | 0.56 | 0.64 | 0.65 | 21.29 | |||||||||||||
1966 | 0.38 | 0.61 | 2.91 | 1.78 | 1.17 | 3.36 | 0.35 | 6.43 | 2.41 | 1.17 | 0.33 | 0.20 | 21.10 | |||||||||||||
1967 | 0.98 | 0.93 | 0.25 | 4.81 | 1.83 | 4.15 | 1.94 | 0.80 | 3.26 | 1.29 | 0.12 | 0.88 | 21.24 | |||||||||||||
1968 | 0.45 | 0.12 | 0.94 | 4.27 | 2.83 | 7.56 | 1.20 | 1.69 | 2.26 | 0.47 | 0.74 | 1.24 | 23.77 | |||||||||||||
1969 | 1.65 | 1.93 | 0.42 | 1.85 | 2.23 | 5.71 | 1.87 | 0.75 | 0.41 | 0.77 | 0.23 | 0.98 | 18.80 | |||||||||||||
1970 | 0.35 | 0.23 | 1.45 | 3.11 | 2.84 | 2.92 | 1.64 | 0.29 | 1.55 | 0.94 | 2.26 | 0.35 | 17.93 | |||||||||||||
1971 | 0.99 | 0.48 | 0.28 | 1.19 | 2.11 | 6.16 | 1.61 | 2.77 | 1.00 | 3.93 | 1.14 | 0.89 | 22.55 | |||||||||||||
1972 | 0.99 | 0.51 | 0.80 | 0.77 | 5.97 | 0.72 | 5.21 | 1.34 | 0.57 | 0.86 | 0.16 | 1.63 | 19.53 | |||||||||||||
1973 | 0.24 | 0.24 | 2.00 | 1.30 | 1.24 | 0.95 | 1.53 | 1.14 | 4.66 | 1.50 | 0.96 | 0.78 | 16.54 | |||||||||||||
1974 | 0.10 | 0.66 | 0.53 | 2.78 | 4.46 | 1.19 | 1.85 | 2.38 | 0.22 | 1.06 | 0.32 | 0.17 | 15.72 | |||||||||||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | 0.20 | 2.10 | 0.10 | 0.35 | 0.85 | ----- | z | ----- | z | ----- | z | 3.60 | g | |||||
1977 | ----- | z | 1.62 | ----- | z | 0.93 | ----- | z | 0.50 | e | 2.08 | 2.54 | 4.89 | 1.40 | 2.03 | ----- | z | 15.99 | d | |||||||
1978 | 0.32 | ----- | z | ----- | z | 0.79 | d | 3.27 | 6.28 | 0.76 | 1.91 | 4.59 | 0.16 | 1.00 | q | ----- | z | 18.08 | d | |||||||
1979 | ----- | z | ----- | z | 0.79 | t | 3.48 | 1.40 | 3.19 | 2.55 | 0.86 | 0.22 | 1.07 | 1.03 | 0.32 | 14.12 | c | |||||||||
1980 | 0.80 | a | ----- | z | ----- | z | 0.60 | 1.26 | 2.18 | ----- | z | 3.11 | 0.70 | 1.55 | a | 0.00 | 0.00 | 10.20 | c | |||||||
1981 | 0.22 | d | 0.04 | 0.25 | 1.03 | 1.35 | a | 4.04 | 2.82 | 0.90 | 1.36 | 1.72 | ----- | z | ----- | z | 13.73 | b | ||||||||
1982 | ----- | z | ----- | z | 0.32 | c | 0.24 | a | 3.93 | 1.00 | 1.19 | 0.28 | 1.29 | 5.25 | ----- | z | 0.30 | 13.80 | c | |||||||
1983 | 0.13 | a | 0.15 | 2.50 | e | 0.00 | b | 1.60 | 2.93 | 5.22 | 2.62 | 2.01 | 1.10 | 0.31 | k | ----- | z | 18.26 | b | |||||||
1984 | 0.00 | c | 0.19 | e | 0.35 | y | 3.40 | 1.52 | 8.03 | 0.90 | 0.55 | 1.25 | 3.70 | ----- | z | 0.16 | c | 19.70 | b | |||||||
1985 | 0.00 | e | 0.00 | 0.13 | d | 0.12 | 2.88 | 2.50 | a | 0.12 | 2.23 | 2.38 | 1.20 | x | ----- | z | ----- | z | 10.36 | c | ||||||
1986 | ----- | z | ----- | z | 0.80 | 7.52 | b | 3.27 | 2.23 | 5.48 | 3.03 | 4.26 | 0.25 | 1.26 | 0.00 | 28.10 | b | |||||||||
1987 | 0.00 | 0.90 | c | 3.09 | b | 0.00 | 2.40 | 1.45 | 3.87 | 0.38 | b | 1.31 | 0.00 | 0.30 | 0.28 | b | 13.98 | |||||||||
1988 | ----- | z | ----- | z | 0.40 | 0.07 | 2.04 | 1.40 | 0.75 | 1.54 | a | 4.00 | 0.30 | 1.28 | c | 0.73 | 12.51 | b | ||||||||
1989 | 0.75 | 0.30 | 2.15 | 2.46 | a | 1.00 | 1.85 | 4.05 | 5.75 | 1.47 | 0.50 | 0.78 | 0.00 | 21.06 | ||||||||||||
1990 | 0.30 | b | 0.24 | 1.56 | 3.17 | 0.15 | 4.12 | 1.33 | 3.02 | 1.66 | 0.95 | 0.00 | 0.75 | 17.25 | ||||||||||||
1991 | 0.00 | 0.96 | 1.81 | 2.98 | 6.91 | 8.54 | a | 2.06 | a | 1.00 | 1.45 | 1.81 | 0.40 | a | 0.00 | b | 27.92 | |||||||||
1992 | 0.55 | 0.21 | 0.86 | 1.11 | 3.34 | a | 5.38 | 1.75 | 1.61 | ----- | z | 0.32 | 1.28 | d | 0.14 | b | 16.55 | a | ||||||||
1993 | 1.17 | 0.40 | 0.52 | a | 1.85 | 3.33 | c | 6.39 | 6.59 | 1.90 | 1.68 | 0.46 | p | 0.00 | f | ----- | z | 23.83 | c | |||||||
1994 | ----- | z | ----- | z | ----- | z | 2.55 | 1.15 | 0.61 | 6.55 | 1.73 | 2.80 | 5.82 | a | 0.73 | 0.14 | 22.08 | c | ||||||||
1995 | 0.85 | s | ----- | z | 1.67 | v | ----- | z | 2.95 | 1.18 | 5.25 | d | 2.66 | 2.07 | b | 3.68 | 0.13 | j | 0.55 | 18.34 | e | |||||
1996 | 0.80 | ----- | z | 2.10 | h | 0.20 | 4.14 | w | 2.14 | y | 3.08 | a | 2.66 | 6.68 | e | ----- | z | 1.38 | a | 1.17 | a | 15.97 | e | |||
1997 | 1.14 | 0.00 | g | 1.10 | c | 2.17 | 1.35 | 1.42 | l | 3.67 | b | 3.18 | 1.46 | a | 3.32 | a | 0.90 | 0.30 | b | 18.59 | b | |||||
1998 | 0.36 | 1.20 | 1.90 | 3.25 | 3.73 | 6.58 | 2.08 | 4.90 | 0.99 | 7.24 | 1.25 | 0.20 | a | 33.68 | ||||||||||||
1999 | 0.00 | l | 0.35 | 1.05 | 1.06 | a | 3.71 | 4.38 | 4.17 | 3.90 | 7.60 | 0.43 | 0.10 | 0.10 | q | 26.75 | b | |||||||||
2000 | 0.09 | a | 1.10 | a | 0.75 | a | 1.99 | 1.91 | 2.57 | 5.93 | 1.32 | 1.78 | 0.82 | 2.00 | 0.38 | 20.64 | ||||||||||
2001 | 0.00 | c | 0.00 | g | 0.13 | 4.20 | 1.76 | 3.16 | 2.52 | 2.97 | ----- | z | 1.74 | 0.00 | p | ----- | z | 16.48 | d | |||||||
2002 | ----- | z | ----- | z | ----- | z | 1.56 | s | 2.03 | 4.81 | 4.16 | i | 2.50 | 0.58 | a | 1.40 | b | 0.00 | ----- | z | 11.32 | f | ||||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | 5.12 | 5.48 | a | 2.48 | ----- | z | 0.77 | 1.15 | 2.00 | l | ----- | z | 15.00 | g | ||||
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.67 | c | 2.91 | 0.79 | 4.96 | w | 4.68 | x | ----- | z | ----- | z | 4.37 | i | ||
2005 | ----- | z | ----- | z | ----- | z | 0.70 | r | 3.74 | 13.51 | b | 2.11 | b | 3.04 | b | 2.60 | 1.45 | ----- | z | ----- | z | 26.45 | f | |||
2006 | ----- | z | ----- | z | ----- | z | 1.74 | 2.60 | c | 1.14 | 1.99 | 3.81 | x | 2.31 | 1.30 | 0.00 | 0.42 | b | 11.50 | d | ||||||
2007 | 0.09 | 1.10 | 1.52 | b | 2.26 | 7.07 | y | 5.17 | b | 3.51 | 2.65 | a | 1.73 | 1.08 | 0.15 | ----- | z | 19.26 | b | |||||||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | 1.70 | 2.37 | 2.92 | 2.27 | 3.44 | 5.48 | 0.57 | ----- | z | 18.75 | e | |||||||
2009 | ----- | z | ----- | z | ----- | z | 1.29 | 1.11 | g | 4.84 | d | 1.36 | h | 1.78 | k | 2.26 | n | 6.90 | e | 0.15 | 0.00 | c | 13.18 | g | ||
2010 | 0.00 | m | 0.00 | i | 1.00 | 1.80 | b | 5.65 | a | 2.73 | f | 2.98 | b | 2.34 | 7.27 | 1.28 | 0.63 | 2.20 | f | 22.95 | d | |||||
2011 | 0.33 | f | 0.17 | h | 0.55 | r | 2.69 | k | 1.92 | e | 6.20 | h | 4.05 | f | 1.74 | h | 0.43 | f | 0.76 | a | 0.00 | d | 0.12 | c | 2.80 | h |
2012 | 0.50 | b | 0.45 | S | 0.70 | a | 2.63 | e | 2.68 | b | 2.51 | c | 3.32 | 1.01 | i | 0.82 | b | 1.99 | d | 0.25 | p | 0.00 | S | 15.60 | c | |
2013 | 0.51 | a | 0.94 | c | 0.20 | c | 2.32 | b | 4.12 | d | 6.60 | e | 1.09 | c | 0.30 | g | 4.15 | 5.53 | g | 0.00 | k | 1.05 | b | 20.98 | c | |
2014 | 0.17 | a | 0.00 | c | 0.10 | c | 2.65 | d | 2.17 | b | 8.20 | c | 1.01 | c | 7.80 | a | 0.36 | 0.15 | a | 1.21 | d | 0.00 | b | 23.82 | ||
2015 | 0.37 | S | 0.38 | b | 1.12 | c | 0.41 | e | 6.86 | d | 3.89 | c | 1.50 | b | 1.64 | a | 0.54 | a | 2.04 | c | 0.94 | c | 0.37 | a | 20.06 | |
2016 | 0.23 | e | 0.08 | S | 0.99 | a | 3.70 | b | 2.81 | c | 3.63 | e | 4.02 | a | 7.45 | 1.81 | a | 1.61 | b | 0.78 | 0.18 | d | 27.29 | |||
2017 | 0.77 | b | 0.15 | a | 0.35 | a | 1.51 | 2.79 | a | 3.35 | 1.42 | 3.12 | 2.90 | 0.82 | a | 0.10 | a | 0.00 | c | 17.28 | ||||||
2018 | 0.23 | d | 0.47 | b | 2.24 | S | 0.63 | 1.35 | 3.96 | a | 10.79 | c | 0.80 | 3.39 | 2.36 | a | 0.50 | h | 0.00 | r | 26.22 | b | ||||
2019 | ----- | z | ----- | z | ----- | z | ----- | z | 4.22 | b | 5.89 | a | 3.96 | a | 4.19 | a | ----- | z | ----- | z | ----- | z | ----- | z | 18.26 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.48 | 0.56 | 0.93 | 1.98 | 2.66 | 3.68 | 2.78 | 2.41 | 1.97 | 1.58 | 0.70 | 0.46 | 19.78 | |||||||||||||
S.D. | 0.40 | 0.49 | 0.72 | 1.34 | 1.49 | 2.35 | 1.83 | 1.89 | 1.60 | 1.51 | 0.61 | 0.36 | 4.93 | |||||||||||||
SKEW | 1.05 | 1.27 | 1.07 | 1.06 | 0.98 | 1.18 | 1.66 | 2.01 | 1.48 | 1.90 | 1.09 | 0.82 | 0.52 | |||||||||||||
MAX | 1.71 | 2.02 | 3.09 | 7.52 | 6.91 | 13.51 | 10.79 | 11.41 | 7.60 | 7.24 | 2.74 | 1.63 | 33.68 | |||||||||||||
MIN | 0.00 | 0.00 | 0.05 | 0.00 | 0.15 | 0.36 | 0.10 | 0.19 | 0.19 | 0.00 | 0.00 | 0.00 | 9.14 | |||||||||||||
YRS | 70 | 66 | 70 | 80 | 84 | 84 | 86 | 82 | 83 | 83 | 73 | 70 | 51 |