YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1929 | ----- | z | 0.07 | 0.35 | 1.01 | 0.70 | 0.00 | 4.28 | 1.88 | 1.93 | 0.79 | 0.20 | 0.00 | 11.21 | a | |||||||||||
1930 | 0.87 | 0.45 | 0.74 | 1.27 | 0.26 | 0.25 | 3.83 | 1.51 | 0.42 | 0.20 | 2.01 | 0.00 | 11.81 | |||||||||||||
1931 | 0.20 | 1.51 | 0.56 | 1.63 | 0.25 | 1.27 | 2.94 | 1.33 | 0.44 | 1.12 | 2.74 | 0.63 | 14.62 | |||||||||||||
1932 | 0.39 | 1.13 | 0.23 | 0.41 | 0.24 | 0.00 | 1.38 | 1.37 | 0.83 | 0.31 | 0.00 | 1.17 | 7.46 | |||||||||||||
1933 | 0.35 | 0.44 | 0.00 | 0.29 | 0.10 | 0.60 | 1.49 | 0.95 | 1.96 | 1.50 | 0.43 | 0.16 | 8.27 | |||||||||||||
1934 | 0.20 | 0.87 | 0.23 | 1.28 | 1.15 | 0.00 | 0.62 | 1.36 | 0.48 | 0.22 | 0.43 | ----- | z | 6.84 | a | |||||||||||
1935 | 1.66 | 1.23 | 1.14 | 0.68 | 1.42 | 0.51 | 1.61 | 3.08 | 0.90 | 0.00 | 1.10 | 0.76 | 14.09 | |||||||||||||
1936 | 0.27 | 1.45 | 0.83 | 0.46 | 0.31 | 0.42 | 1.33 | 4.74 | 1.50 | 2.02 | 0.22 | 1.73 | 15.28 | |||||||||||||
1937 | 1.02 | 0.66 | 1.04 | 0.50 | 1.14 | 0.05 | 1.65 | 0.74 | 1.77 | 0.29 | ----- | z | 0.46 | 9.32 | a | |||||||||||
1938 | 0.32 | b | 1.47 | 1.88 | 0.38 | 0.26 | 0.41 | 0.44 | 0.61 | 0.40 | ----- | z | ----- | z | ----- | z | 6.17 | c | ||||||||
1939 | ----- | z | ----- | z | ----- | z | 0.78 | 0.15 | 0.00 | 0.09 | 1.09 | 1.36 | 0.53 | 1.55 | 0.31 | 5.86 | c | |||||||||
1940 | 1.04 | 1.24 | 0.67 | 1.41 | 0.48 | 0.26 | 0.56 | a | 4.26 | 4.70 | 1.98 | 1.12 | 2.45 | 20.17 | ||||||||||||
1941 | 0.87 | 1.77 | 1.70 | 3.46 | 1.62 | 3.19 | 0.39 | 2.07 | 4.60 | 3.32 | 0.79 | 1.14 | a | 24.92 | ||||||||||||
1942 | 0.05 | 1.36 | 0.57 | 1.60 | 0.00 | 0.00 | 1.29 | 1.90 | 1.10 | 1.89 | 0.15 | 1.52 | 11.43 | |||||||||||||
1943 | 1.23 | 0.28 | 1.29 | 0.22 | 0.38 | 0.18 | 0.41 | 2.58 | 0.93 | 1.27 | 0.00 | 0.62 | 9.39 | |||||||||||||
1944 | 1.60 | 1.60 | v | 1.61 | 0.62 | 0.80 | 0.00 | 1.32 | 0.41 | 2.14 | 0.00 | 0.86 | 2.11 | 11.47 | a | |||||||||||
1945 | 1.06 | 0.74 | 1.79 | 0.26 | 0.04 | 0.23 | 3.11 | 2.35 | 0.58 | 0.63 | 0.00 | 1.22 | 12.01 | |||||||||||||
1946 | 0.10 | 0.18 | y | 0.41 | 0.10 | 0.44 | 0.00 | 1.59 | 3.27 | 1.81 | 0.63 | 1.42 | 0.62 | 10.39 | a | |||||||||||
1947 | 0.55 | 0.04 | 0.25 | 0.03 | 1.34 | 0.24 | 0.26 | 4.07 | 0.38 | 2.73 | 1.08 | 1.02 | 11.99 | |||||||||||||
1948 | 0.17 | 1.58 | 1.61 | 0.38 | 0.14 | 0.24 | 1.13 | a | 2.14 | 1.50 | 2.81 | 0.00 | 1.44 | 13.14 | ||||||||||||
1949 | 1.69 | 0.78 | 1.05 | 0.47 | 0.56 | 1.79 | 1.52 | 0.20 | 1.40 | 1.50 | 0.26 | 0.47 | 11.69 | |||||||||||||
1950 | 0.42 | 0.43 | 0.14 | 0.00 | 0.05 | 0.43 | 2.61 | 0.52 | 0.70 | 0.00 | 0.25 | 0.24 | e | 5.79 | ||||||||||||
1951 | 0.62 | 0.16 | 0.32 | 1.07 | 0.30 | 0.00 | 0.46 | 1.63 | 0.16 | 1.22 | 0.65 | 0.74 | 7.33 | |||||||||||||
1952 | 1.34 | 0.33 | 0.87 | 1.92 | 0.07 | 0.85 | 2.40 | 1.46 | 1.30 | 0.00 | 1.56 | 0.77 | 12.87 | |||||||||||||
1953 | 0.33 | 0.38 | 0.16 | 0.37 | 0.28 | c | 0.02 | 2.03 | 0.64 | 0.00 | 0.66 | 0.53 | 0.66 | 6.06 | ||||||||||||
1954 | 0.28 | 0.16 | 1.91 | 0.22 | 0.59 | 0.10 | 2.24 | 2.28 | 1.25 | 1.11 | 0.06 | 0.46 | 10.66 | |||||||||||||
1955 | 0.43 | 0.60 | 0.21 | 0.26 | 0.37 | 1.09 | 1.57 | 2.61 | 0.14 | 0.00 | 0.36 | 0.60 | 8.24 | |||||||||||||
1956 | 0.98 | 0.18 | 0.05 | 0.07 | 0.37 | 0.28 | 1.82 | 0.82 | 0.00 | 0.93 | 0.18 | 0.23 | 5.91 | |||||||||||||
1957 | 2.57 | 0.57 | 1.03 | 0.96 | 1.88 | 0.17 | 1.66 | 2.41 | 0.00 | 2.40 | 0.74 | 0.28 | 14.67 | |||||||||||||
1958 | 0.25 | 0.98 | 0.95 | 0.61 | 0.25 | 0.16 | 0.69 | 2.49 | 1.55 | 0.73 | 0.65 | 0.15 | 9.46 | |||||||||||||
1959 | 0.21 | 0.67 | 0.00 | 0.60 | 0.00 | 0.82 | 0.70 | 5.43 | 0.43 | 1.97 | 0.35 | 1.64 | 12.82 | |||||||||||||
1960 | 0.59 | 1.03 | 0.62 | 0.21 | 0.36 | 0.43 | 0.18 | 1.06 | 0.12 | 2.92 | 0.30 | 0.59 | 8.41 | |||||||||||||
1961 | 0.25 | 0.49 | 0.98 | 0.29 | 0.01 | 0.00 | 2.05 | 1.87 | 0.90 | 2.05 | 0.52 | 1.19 | 10.60 | |||||||||||||
1962 | 0.76 | 1.02 | 0.61 | 0.05 | 0.24 | 0.25 | 0.53 | 0.22 | 2.32 | 2.43 | 1.53 | 0.13 | 10.09 | |||||||||||||
1963 | 0.32 | 0.66 | 0.27 | 0.24 | 0.00 | 0.01 | 0.51 | 3.67 | 0.80 | 0.57 | 0.42 | 0.50 | 7.97 | |||||||||||||
1964 | 0.17 | 0.14 | 0.93 | 1.28 | 0.00 | 0.09 | 2.81 | 3.82 | 3.02 | 0.00 | 1.09 | 1.05 | 14.40 | |||||||||||||
1965 | 1.65 | 0.96 | 0.68 | 0.88 | 1.33 | 0.85 | 3.18 | 1.20 | 2.03 | 1.16 | 1.83 | 1.84 | 17.59 | |||||||||||||
1966 | 0.39 | 0.59 | 0.54 | 0.16 | 0.05 | 0.02 | 1.89 | 0.66 | 1.00 | 0.20 | 0.74 | 1.63 | 7.87 | |||||||||||||
1967 | 0.33 | 0.00 | 0.41 | 0.38 | 0.21 | 0.78 | 2.39 | 1.79 | 0.81 | 0.21 | 0.25 | 2.07 | 9.63 | |||||||||||||
1968 | 0.06 | 0.21 | 0.36 | 0.74 | 0.41 | 0.20 | 2.56 | 1.41 | 0.00 | 1.91 | 1.38 | 1.55 | 10.79 | |||||||||||||
1969 | 0.84 | 0.77 | 1.12 | 0.49 | 0.28 | 0.20 | ----- | z | 1.35 | l | 0.33 | 2.16 | 0.70 | 0.10 | 6.99 | b | ||||||||||
1970 | 0.39 | 0.00 | 1.55 | 1.86 | 0.07 | 0.43 | 1.32 | 1.21 | 1.70 | 0.66 | 0.42 | 0.65 | 10.26 | |||||||||||||
1971 | 0.10 | 0.53 | 0.23 | 0.32 | 0.23 | 0.00 | 1.49 | 3.22 | 1.92 | 2.31 | 0.95 | 2.74 | 14.04 | |||||||||||||
1972 | 0.10 | 0.23 | 0.05 | 0.06 | 0.14 | 1.07 | 0.92 | 0.63 | 0.34 | 3.87 | 0.91 | 1.41 | 9.73 | |||||||||||||
1973 | 0.33 | e | 0.66 | e | 2.78 | 0.66 | b | 1.18 | 0.69 | 0.63 | 0.92 | 0.43 | 0.06 | 0.53 | c | 0.25 | 9.12 | |||||||||
1974 | 1.17 | c | 0.80 | 0.41 | 0.73 | 0.00 | 0.18 | 3.27 | 0.23 | 0.57 | 3.18 | 0.36 | 0.65 | 11.55 | ||||||||||||
1975 | 1.12 | 0.74 | 1.52 | 0.57 | 0.33 | 0.00 | 2.14 | 0.51 | 1.72 | 0.18 | 0.83 | 0.51 | 10.17 | |||||||||||||
1976 | 0.00 | 0.99 | 0.18 | 0.46 | 0.70 | 0.25 | 2.73 | 1.49 | 0.82 | 0.61 | 0.44 | 0.07 | 8.74 | |||||||||||||
1977 | 1.07 | 0.60 | 0.06 | 0.65 | 0.41 | 0.35 | 3.23 | 1.99 | 2.05 | ----- | z | 0.85 | 0.05 | c | 11.31 | a | ||||||||||
1978 | ----- | z | 2.05 | 1.70 | 0.50 | b | ----- | z | 0.00 | 0.10 | 0.87 | 0.50 | 1.40 | 4.33 | 2.96 | 14.41 | b | |||||||||
1979 | 2.16 | ----- | z | 1.80 | 0.20 | c | 1.17 | 0.73 | 0.00 | 1.17 | 0.00 | 1.06 | 0.63 | 1.37 | 10.29 | a | ||||||||||
1980 | 1.76 | a | 2.28 | 0.76 | 0.14 | a | 0.18 | f | 0.00 | 0.44 | 1.45 | 2.75 | 0.57 | 0.22 | 0.28 | 10.65 | a | |||||||||
1981 | 0.36 | a | 0.83 | 2.16 | b | 0.36 | 0.45 | 0.38 | 2.21 | 2.02 | 1.15 | 1.30 | b | 1.18 | 0.20 | 12.60 | ||||||||||
1982 | 0.44 | f | 2.94 | 1.53 | x | 0.15 | 1.98 | 0.00 | 1.05 | 4.83 | 1.38 | 0.00 | b | 1.25 | c | 0.40 | e | 13.98 | b | |||||||
1983 | 0.22 | k | 0.00 | d | 0.67 | b | 0.28 | c | 0.26 | 0.44 | 2.49 | 2.46 | 0.96 | 0.66 | 1.04 | 0.97 | b | 10.23 | a | |||||||
1984 | 0.00 | c | 0.00 | a | 0.89 | c | 0.73 | a | 0.13 | a | 0.42 | 1.41 | a | 3.27 | 1.57 | b | 2.40 | a | 0.00 | b | ----- | z | 10.82 | a | ||
1985 | ----- | z | 0.05 | f | 1.47 | d | 3.25 | 0.19 | 0.02 | 2.00 | a | 1.55 | a | 2.96 | d | 2.70 | 0.63 | e | 0.03 | d | 14.80 | b | ||||
1986 | 0.00 | ----- | z | 1.87 | b | 1.26 | h | 0.50 | 0.35 | a | 2.24 | c | 1.21 | a | 4.13 | c | 0.70 | b | 2.19 | d | 1.29 | c | 14.48 | b | ||
1987 | 1.09 | 0.92 | i | ----- | z | 0.62 | a | 0.46 | d | 0.07 | 2.43 | b | 1.34 | d | 0.37 | g | 1.04 | a | 1.68 | b | 1.11 | i | 8.73 | d | ||
1988 | ----- | z | 1.30 | 0.01 | 2.56 | b | 0.02 | 0.67 | b | 0.12 | a | 3.45 | c | 0.22 | a | 0.10 | 0.61 | a | 0.04 | a | 9.10 | a | ||||
1989 | 0.18 | a | 0.00 | e | 0.45 | b | 0.00 | 0.13 | a | 0.00 | 0.08 | 2.52 | b | 0.00 | 1.14 | a | 0.00 | a | 0.00 | c | 4.50 | |||||
1990 | 0.45 | b | 1.95 | a | 1.00 | b | 0.57 | 0.72 | 0.00 | 1.51 | b | 1.76 | b | 1.10 | d | 0.09 | 1.17 | 1.33 | 11.65 | |||||||
1991 | 0.69 | c | 0.10 | 1.36 | a | 0.00 | 0.00 | 0.47 | 0.59 | 1.16 | 1.17 | 0.16 | a | 1.48 | a | 2.69 | b | 9.87 | ||||||||
1992 | 0.47 | a | 0.76 | 1.36 | 0.44 | 3.14 | 0.17 | 1.37 | 1.68 | 0.26 | 1.32 | 0.06 | b | 2.68 | 13.71 | |||||||||||
1993 | 2.57 | a | 1.23 | b | 0.96 | 0.28 | 0.88 | 0.00 | 0.14 | 2.49 | 0.15 | 1.13 | 0.87 | a | 0.14 | 10.84 | ||||||||||
1994 | 0.20 | a | 0.30 | 0.48 | 0.74 | 0.80 | 0.95 | 0.00 | 0.77 | 0.94 | 1.59 | 1.16 | 0.74 | a | 8.67 | |||||||||||
1995 | 1.68 | b | 0.93 | 1.31 | 0.85 | 1.74 | 0.00 | 0.73 | 0.40 | 1.21 | 0.00 | 0.22 | a | 0.22 | 9.29 | |||||||||||
1996 | 0.03 | 0.14 | a | 0.27 | b | 0.21 | 0.00 | 0.39 | a | 0.78 | b | 0.48 | b | 2.10 | d | 0.83 | a | 0.68 | f | 0.56 | a | 5.79 | a | |||
1997 | 0.87 | c | 0.28 | c | 0.00 | 0.76 | a | 0.35 | 0.74 | b | 1.14 | b | 1.41 | c | 1.00 | b | 1.12 | a | 1.28 | a | 1.05 | c | 10.00 | |||
1998 | 0.74 | c | 1.39 | e | 1.05 | c | 0.55 | b | 0.00 | 0.00 | 3.73 | d | 0.95 | b | 0.27 | 2.75 | e | 1.82 | c | 0.24 | b | 13.49 | ||||
1999 | 0.00 | 0.11 | 0.08 | 0.89 | b | 1.32 | b | 0.42 | d | 5.41 | f | 3.32 | g | 1.37 | d | 0.00 | 0.00 | 0.12 | b | 4.31 | b | |||||
2000 | 0.32 | c | 0.38 | d | 3.26 | b | 0.25 | 0.00 | 0.14 | 0.56 | d | 2.28 | f | 0.72 | d | 2.36 | h | 1.30 | f | 0.27 | c | 5.90 | c | |||
2001 | 0.73 | b | 1.02 | c | 0.36 | 0.97 | a | 1.02 | c | 0.08 | 0.99 | c | 2.93 | g | 0.45 | n | 0.22 | e | 0.22 | c | 0.34 | d | 5.95 | b | ||
2002 | 0.18 | 0.03 | c | 0.10 | b | 0.58 | a | 0.00 | 0.00 | 0.88 | f | 0.55 | 3.19 | g | 1.10 | c | 0.53 | c | 1.25 | d | 4.32 | b | ||||
2003 | 0.20 | b | 1.45 | c | 1.13 | d | 0.00 | 0.00 | 0.00 | 1.00 | c | 0.90 | c | 1.79 | a | 1.49 | e | 1.06 | e | 1.03 | c | 10.05 | ||||
2004 | 0.90 | d | 1.00 | b | 0.00 | b | 1.42 | a | 0.16 | b | 0.04 | b | 0.28 | b | 0.88 | c | 3.24 | e | 1.23 | b | 1.47 | d | 1.37 | a | 11.99 | |
2005 | 1.43 | e | 3.70 | i | 0.87 | h | 1.77 | d | 0.18 | a | 0.00 | 0.02 | d | 2.89 | e | 0.77 | g | 0.63 | d | 0.00 | 0.06 | 6.98 | c | |||
2006 | 0.03 | a | 0.00 | 1.01 | c | 0.13 | c | 0.10 | 0.10 | c | 1.72 | j | 3.70 | g | 1.08 | m | 2.65 | i | 0.04 | c | 0.40 | b | 1.81 | d | ||
2007 | 1.01 | f | 0.56 | b | 1.03 | a | 1.64 | e | 1.90 | e | 0.50 | 0.28 | 2.32 | g | ----- | z | 0.20 | 0.70 | 0.07 | e | 6.88 | c | ||||
2008 | 0.06 | c | 0.00 | d | 0.00 | 0.18 | 0.05 | 0.35 | 1.48 | a | 1.13 | 1.41 | 0.60 | 0.63 | 1.28 | 7.17 | ||||||||||
2009 | 0.45 | a | 0.58 | a | 0.22 | 0.13 | 1.45 | 0.16 | 0.22 | e | 0.00 | 0.20 | 0.22 | 0.00 | 0.75 | 4.38 | ||||||||||
2010 | 0.09 | e | 0.42 | 0.31 | 0.15 | 0.03 | 0.10 | 1.01 | 0.63 | 1.01 | 0.87 | 0.24 | 2.09 | b | 6.95 | |||||||||||
2011 | 0.13 | 0.16 | c | 0.10 | b | 0.08 | b | 0.75 | 0.00 | 1.03 | 0.92 | 1.55 | 0.00 | c | 1.41 | 0.00 | 6.13 | |||||||||
2012 | 0.00 | f | 0.00 | 0.15 | 0.00 | 0.00 | 0.26 | 2.58 | 0.88 | 0.72 | 0.00 | 0.61 | 1.15 | 6.35 | a | |||||||||||
2013 | 2.39 | 0.39 | c | 0.00 | 0.00 | 0.00 | 0.00 | 0.63 | ----- | z | ----- | z | ----- | z | 3.08 | 0.00 | 6.49 | c | ||||||||
2014 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ----- | z | 0.00 | l | 0.00 | 0.00 | 0.00 | 0.00 | x | 0.00 | c | |||||||||
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.24 | a | 1.72 | 2.11 | 0.34 | 1.23 | d | 0.46 | 0.00 | a | 7.10 | e | ||||
2016 | 0.30 | a | 0.08 | 0.00 | 0.05 | b | 0.41 | 0.00 | q | 0.00 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.84 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.66 | 0.69 | 0.77 | 0.64 | 0.50 | 0.33 | 1.41 | 1.72 | 1.17 | 1.06 | 0.80 | 0.83 | 10.76 | |||||||||||||
S.D. | 0.64 | 0.61 | 0.69 | 0.67 | 0.60 | 0.47 | 1.03 | 1.18 | 1.02 | 0.95 | 0.75 | 0.75 | 3.67 | |||||||||||||
SKEW | 1.29 | 1.13 | 1.07 | 2.04 | 1.83 | 3.19 | 0.63 | 1.07 | 1.43 | 0.85 | 1.85 | 1.01 | 1.18 | |||||||||||||
MAX | 2.57 | 2.94 | 3.26 | 3.46 | 3.14 | 3.19 | 4.28 | 5.43 | 4.70 | 3.87 | 4.33 | 2.96 | 24.92 | |||||||||||||
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 | 4.38 | |||||||||||||
YRS | 78 | 79 | 83 | 86 | 85 | 87 | 82 | 79 | 80 | 82 | 83 | 82 | 56 |