YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1927 | ----- | z | 0.92 | 0.42 | ----- | z | 1.03 | 0.47 | 0.02 | 0.44 | 3.80 | t | 0.61 | w | 1.79 | m | ----- | z | 3.30 | f | ||||||
1928 | 1.17 | s | ----- | z | 0.91 | t | 0.37 | t | ----- | z | 0.10 | x | ----- | z | ----- | z | ----- | z | ----- | z | 0.74 | w | 0.87 | y | 0.00 | l |
1929 | 0.15 | a | ----- | z | 0.35 | x | 0.20 | v | 0.56 | 1.47 | 0.00 | 0.00 | ----- | z | 0.12 | 0.00 | 0.98 | d | 3.28 | d | ||||||
1930 | 0.34 | 0.92 | 0.21 | 0.10 | 1.13 | 0.86 | 0.02 | 0.15 | 1.75 | 0.22 | 0.82 | 0.41 | 6.93 | |||||||||||||
1931 | 2.19 | 0.42 | 0.68 | 0.02 | 0.15 | 1.08 | ----- | z | 0.00 | ----- | z | ----- | z | 1.11 | 3.84 | 9.49 | c | |||||||||
1932 | 0.50 | 0.29 | 0.82 | 0.74 | 1.31 | 0.63 | 0.08 | 0.00 | 0.00 | 0.31 | 1.95 | 1.38 | 8.01 | |||||||||||||
1933 | 0.88 | 0.12 | 1.25 | 0.18 | 1.04 | 0.44 | 0.02 | 0.15 | 0.60 | 1.13 | 0.51 | 2.16 | 8.48 | |||||||||||||
1934 | 1.28 | 0.25 | 0.57 | 0.67 | 0.34 | 0.42 | 0.42 | 0.60 | ----- | z | ----- | z | 1.75 | 0.81 | 7.11 | b | ||||||||||
1935 | 0.99 | 0.98 | 0.39 | 0.54 | ----- | z | ----- | z | 0.48 | 0.50 | ----- | z | 0.83 | 0.75 | 1.73 | 7.19 | c | |||||||||
1936 | 1.61 | 0.29 | ----- | z | 0.43 | 0.36 | 2.89 | 0.11 | ----- | z | 0.38 | 0.06 | ----- | z | 0.93 | 7.06 | c | |||||||||
1937 | 1.17 | 0.73 | 0.92 | 2.00 | 0.10 | 4.33 | 0.70 | 0.28 | 0.46 | 0.48 | 3.00 | 1.66 | 15.83 | |||||||||||||
1938 | 1.17 | 1.07 | 1.58 | y | 0.45 | 0.00 | 0.46 | 0.64 | 0.01 | 0.10 | 0.89 | 0.40 | 0.84 | 6.03 | a | |||||||||||
1939 | 0.76 | 1.03 | 1.02 | 0.53 | 0.36 | 0.63 | ----- | z | ----- | z | 0.16 | 0.85 | 0.07 | 1.93 | 7.34 | b | ||||||||||
1940 | 1.01 | 3.47 | 0.99 | 0.91 | 0.34 | 0.12 | 0.97 | ----- | z | 1.11 | 2.15 | 1.36 | ----- | z | 12.43 | b | ||||||||||
1941 | 2.03 | 1.04 | 0.58 | 0.98 | 1.97 | 2.24 | 0.62 | 2.30 | 1.31 | 0.11 | 1.36 | 2.16 | 16.70 | |||||||||||||
1942 | 0.93 | 1.55 | 0.66 | 0.58 | 2.50 | 1.65 | 0.44 | 0.00 | 0.10 | 0.25 | 1.89 | a | 1.55 | 12.10 | ||||||||||||
1943 | 0.77 | b | 0.30 | 0.74 | 0.66 | 0.23 | 0.97 | 0.00 | 0.49 | 0.02 | 1.89 | 0.36 | 0.36 | 6.79 | ||||||||||||
1944 | 0.71 | 1.32 | 0.13 | 1.87 | 0.46 | 1.55 | 0.00 | 0.21 | 0.44 | 0.23 | 3.31 | 1.01 | 11.24 | |||||||||||||
1945 | 1.44 | 1.23 | 1.49 | 0.39 | 2.63 | 0.51 | 0.00 | 0.33 | 1.19 | 0.61 | 1.66 | 2.12 | 13.60 | |||||||||||||
1946 | 1.63 | 1.24 | 0.65 | 0.15 | 2.11 | 0.78 | 0.10 | 0.00 | 0.67 | 1.11 | 1.47 | 0.31 | 10.22 | |||||||||||||
1947 | 0.28 | ----- | z | 0.42 | 1.09 | 0.19 | 1.13 | 0.62 | 0.10 | 1.33 | 3.08 | a | 0.29 | 1.61 | 10.14 | a | ||||||||||
1948 | 0.68 | 0.74 | 0.05 | 2.03 | 5.73 | 3.20 | a | 1.61 | 0.95 | a | 1.15 | 0.74 | 1.11 | 2.17 | 20.16 | |||||||||||
1949 | 0.10 | 1.44 | 1.03 | 0.09 | 0.32 | 0.18 | 0.00 | 0.05 | 0.37 | 0.63 | ----- | z | ----- | z | 4.21 | b | ||||||||||
1950 | ----- | z | ----- | z | ----- | z | 0.77 | d | 0.75 | 2.33 | 0.15 | 0.00 | 0.07 | 2.67 | a | 1.64 | 1.62 | b | 10.00 | c | ||||||
1951 | 0.79 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.47 | 2.20 | 1.91 | 1.38 | a | 6.75 | g | |||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.01 | a | 0.44 | 2.31 | 2.76 | i | ||
1953 | 2.64 | a | 0.59 | a | 1.35 | 0.89 | 1.56 | 1.26 | 0.00 | 0.82 | 0.13 | 0.27 | 1.17 | 0.97 | 11.65 | |||||||||||
1954 | 0.73 | 0.50 | ----- | z | ----- | z | ----- | z | ----- | z | 0.28 | 0.33 | a | 1.61 | 0.05 | 1.47 | 0.59 | 5.56 | d | |||||||
1955 | 0.80 | a | ----- | z | ----- | z | 0.35 | y | 0.62 | 0.50 | 0.73 | 0.00 | 0.68 | 0.88 | 1.06 | 1.61 | 6.88 | c | ||||||||
1956 | 1.44 | 0.60 | 0.24 | 0.06 | 0.31 | 1.54 | 0.10 | 1.29 | 0.00 | 2.31 | 0.38 | 0.34 | 8.61 | |||||||||||||
1957 | 0.91 | 0.57 | 1.57 | 0.51 | 2.42 | 0.78 | 0.20 | 0.15 | 0.19 | 1.91 | 0.60 | 1.10 | 10.91 | |||||||||||||
1958 | 2.50 | 2.59 | 0.60 | 1.30 | 1.08 | 1.53 | 0.57 | 0.07 | 0.36 | 0.60 | 1.97 | 1.74 | 14.91 | |||||||||||||
1959 | 2.96 | 0.55 | 0.82 | 0.21 | 0.77 | 0.46 | 0.03 | 0.07 | 2.42 | 0.68 | 1.06 | 0.77 | 10.80 | |||||||||||||
1960 | 0.99 | 1.48 | 0.89 | 0.71 | 1.71 | 0.00 | 0.00 | 0.20 | 1.05 | 0.24 | 2.49 | 1.04 | 10.80 | |||||||||||||
1961 | 0.80 | 2.47 | 1.92 | 0.85 | 1.55 | 0.63 | 0.31 | 0.46 | 0.00 | 0.39 | 0.92 | 1.64 | 11.94 | |||||||||||||
1962 | 0.39 | 0.99 | 1.00 | 0.79 | 0.92 | 0.41 | 0.04 | 0.96 | 0.67 | 1.26 | 1.28 | 1.49 | 10.20 | |||||||||||||
1963 | 0.29 | 1.23 | 0.81 | 2.01 | 0.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.35 | 6.06 | f | ||||||
1964 | 0.15 | 0.00 | ----- | z | 0.20 | 0.00 | ----- | z | ----- | z | ----- | z | 0.18 | 0.13 | 1.97 | 0.66 | o | 2.63 | e | |||||||
1965 | 2.10 | 0.13 | 0.00 | 1.05 | ----- | z | 0.69 | 1.95 | 0.28 | 0.10 | ----- | z | 2.32 | 1.40 | 10.02 | b | ||||||||||
1966 | 2.05 | a | ----- | z | 0.91 | 0.22 | 0.15 | 0.65 | 0.94 | ----- | z | 0.32 | 0.30 | 2.44 | 1.98 | 9.96 | b | |||||||||
1967 | 1.53 | 0.19 | 0.81 | 1.28 | 1.02 | 1.00 | 0.00 | 0.00 | 0.11 | 0.90 | 0.63 | ----- | z | 7.47 | a | |||||||||||
1968 | ----- | z | 1.23 | 0.08 | 0.56 | 0.29 | 0.45 | 0.28 | 1.62 | 0.21 | 1.17 | 2.00 | 1.81 | i | 7.89 | b | ||||||||||
1969 | ----- | z | 0.71 | k | 0.03 | 1.08 | 1.26 | 0.83 | 0.13 | 0.00 | 0.50 | 0.27 | 0.43 | 2.44 | 6.97 | b | ||||||||||
1970 | 2.42 | 0.78 | 0.90 | 0.33 | 0.23 | 0.21 | 0.15 | 0.00 | 0.22 | 0.95 | 1.38 | 1.74 | 9.31 | |||||||||||||
1971 | 1.16 | 0.41 | 2.06 | 0.47 | 1.10 | 0.89 | 0.12 | 0.05 | 1.09 | 0.69 | 1.03 | 1.14 | 10.21 | |||||||||||||
1972 | 0.08 | 0.30 | 0.93 | 0.77 | 2.88 | 1.94 | 0.08 | 0.68 | 0.41 | 0.17 | 1.27 | 2.08 | 11.59 | |||||||||||||
1973 | 1.11 | 0.21 | 0.41 | 0.05 | 0.43 | 0.15 | g | 0.04 | 0.05 | 0.66 | 0.90 | a | 4.82 | 3.86 | 12.54 | a | ||||||||||
1974 | 1.25 | 1.17 | 1.50 | 0.97 | 0.42 | 0.00 | 1.51 | 0.04 | 0.06 | 0.02 | 2.15 | a | 2.29 | 11.38 | ||||||||||||
1975 | 1.13 | 1.13 | 1.32 | 1.28 | 1.03 | 0.72 | 1.54 | 1.15 | 0.01 | 1.76 | 0.53 | 1.06 | 12.66 | |||||||||||||
1976 | 0.49 | 0.48 | 0.79 | 0.94 | 0.40 | 0.25 | 0.32 | 0.75 | a | 0.06 | 0.26 | 0.22 | 0.10 | 5.06 | ||||||||||||
1977 | 0.20 | 0.34 | 0.56 | 0.00 | 0.74 | 0.99 | 0.08 | 0.74 | 0.81 | 0.31 | 1.18 | 1.87 | 7.82 | |||||||||||||
1978 | 1.37 | 1.21 | 1.03 | 1.68 | 1.08 | 0.45 | 1.64 | 0.84 | 0.77 | 0.00 | 0.21 | 0.48 | 10.76 | |||||||||||||
1979 | 0.36 | 1.46 | 0.35 | 0.49 | 0.53 | 0.25 | 0.29 | 1.07 | 2.19 | 1.08 | 1.44 | 1.22 | 10.73 | |||||||||||||
1980 | 1.42 | 3.13 | b | 0.93 | 1.49 | 2.81 | 0.97 | 0.06 | 0.28 | 0.99 | 0.68 | 1.11 | 1.56 | 15.43 | ||||||||||||
1981 | 0.54 | 1.86 | 0.57 | 0.05 | 1.64 | 0.93 | 0.57 | 0.00 | 0.50 | 1.36 | 0.98 | 1.77 | 10.77 | |||||||||||||
1982 | 0.61 | 0.61 | 1.13 | 0.59 | x | 0.26 | 1.49 | 0.40 | 0.17 | 0.63 | 0.89 | 1.52 | 2.48 | a | 10.19 | a | ||||||||||
1983 | 1.59 | 2.12 | 2.73 | 0.83 | 0.56 | 1.31 | 2.02 | 0.25 | 0.40 | 0.58 | 3.48 | 1.21 | l | 15.87 | a | |||||||||||
1984 | 1.40 | a | 1.31 | c | 1.47 | 1.32 | 0.82 | 2.42 | 0.43 | 0.22 | 0.48 | 0.28 | 2.62 | e | ----- | z | 12.77 | a | ||||||||
1985 | ----- | z | 0.00 | d | 0.15 | 0.00 | 0.31 | 0.16 | 0.06 | 0.00 | 1.15 | 0.04 | e | 0.18 | e | ----- | z | 2.05 | b | |||||||
1986 | 1.55 | b | 1.25 | b | 1.07 | 1.07 | 0.31 | 0.00 | 0.15 | 0.10 | 1.77 | 0.49 | 0.77 | 0.00 | b | 8.53 | ||||||||||
1987 | 0.00 | a | 1.96 | 1.85 | 0.24 | 0.92 | 1.96 | 0.74 | 1.23 | 0.00 | 0.00 | 0.49 | a | 2.32 | 11.71 | |||||||||||
1988 | 1.29 | 0.00 | 0.47 | 0.71 | 1.06 | 0.51 | 0.00 | 0.00 | 0.64 | 0.07 | 2.49 | 0.35 | c | 7.59 | ||||||||||||
1989 | 0.00 | c | 0.69 | b | 0.45 | b | 1.45 | 2.54 | 0.18 | 0.09 | 0.56 | 0.00 | 0.53 | 0.68 | ----- | z | 7.17 | a | ||||||||
1990 | 1.18 | b | 0.25 | a | 0.43 | a | 0.84 | 1.90 | 0.49 | 1.23 | 1.42 | 0.00 | 1.04 | ----- | z | ----- | z | 8.78 | b | |||||||
1991 | 0.80 | c | 0.25 | 1.02 | b | 0.63 | 2.34 | 0.31 | a | 0.77 | ----- | z | 0.00 | 0.30 | 2.32 | 0.00 | p | 8.74 | b | |||||||
1992 | ----- | z | 0.73 | 0.30 | 1.32 | 0.15 | 1.41 | 3.43 | a | 0.00 | 0.05 | 0.85 | 1.67 | c | 0.00 | f | 9.91 | b | ||||||||
1993 | ----- | z | 0.00 | c | 0.83 | 2.17 | c | 0.61 | 1.30 | c | 1.27 | l | 0.73 | 0.20 | 0.00 | 0.00 | d | 2.83 | a | 8.67 | b | |||||
1994 | 0.45 | ----- | z | 0.16 | 1.18 | ----- | z | 1.08 | 0.00 | 0.04 | 0.00 | 1.37 | 1.61 | b | 0.10 | c | 5.99 | b | ||||||||
1995 | 3.35 | a | 0.57 | 2.46 | 0.75 | 0.65 | 1.40 | 0.11 | i | ----- | z | 0.52 | 0.39 | 1.64 | a | 1.65 | c | 13.38 | b | |||||||
1996 | 0.00 | f | 1.13 | a | 1.19 | a | 0.58 | 1.46 | 0.39 | 0.34 | j | 1.08 | ----- | z | 1.68 | 0.30 | m | 1.80 | j | 7.51 | e | |||||
1997 | 1.06 | c | 0.78 | g | 1.04 | 0.78 | 1.24 | 0.83 | ----- | z | 0.40 | 0.64 | 0.83 | e | ----- | z | ----- | z | 6.82 | d | ||||||
1998 | 0.70 | c | 1.06 | b | 1.74 | i | 0.28 | 1.94 | 0.24 | 1.97 | ----- | z | 0.28 | 0.34 | 1.35 | 1.54 | a | 9.70 | b | |||||||
1999 | 0.55 | a | 2.87 | a | 0.47 | a | 0.37 | 0.61 | 0.60 | 0.43 | i | 0.52 | 0.00 | 0.42 | a | 1.23 | 0.36 | l | 7.64 | b | ||||||
2000 | 0.00 | c | 0.70 | 0.55 | i | 0.24 | 1.08 | 0.45 | 0.47 | 0.00 | 0.20 | 0.32 | 1.84 | c | 0.00 | c | 5.30 | a | ||||||||
2001 | ----- | z | 0.30 | 1.01 | 0.47 | 0.25 | 0.32 | 0.00 | 0.08 | 0.04 | 0.81 | 1.52 | a | ----- | z | 4.80 | b | |||||||||
2002 | 0.00 | a | 0.00 | 0.00 | a | 0.69 | 1.27 | 0.29 | 0.00 | 0.00 | 0.14 | 0.10 | 1.06 | ----- | z | 3.55 | a | |||||||||
2003 | 2.32 | b | 0.00 | 0.45 | 1.19 | ----- | z | 0.06 | 0.00 | ----- | z | 0.32 | 0.33 | ----- | z | ----- | z | 4.67 | d | |||||||
2004 | ----- | z | ----- | z | 0.33 | 0.30 | 0.64 | b | 0.38 | 0.14 | a | 0.90 | a | 0.60 | 1.18 | a | 0.15 | 0.65 | 5.27 | b | ||||||
2005 | 1.50 | 0.00 | a | 0.90 | g | 0.62 | b | 2.07 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.12 | i | |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.06 | v | 2.09 | b | 2.09 | k |
2013 | 0.70 | k | 0.10 | b | 0.42 | j | 0.54 | a | 0.50 | i | 1.12 | o | 0.00 | 0.27 | d | 0.78 | 0.01 | 0.71 | 1.03 | 3.44 | d | |||||
2014 | 0.53 | a | 1.06 | d | 1.27 | 0.84 | 0.17 | 0.79 | 0.02 | 0.83 | 0.27 | 0.99 | a | 1.10 | 1.41 | 9.28 | ||||||||||
2015 | 1.26 | d | 0.61 | a | 1.17 | a | 0.30 | 1.20 | e | 0.00 | a | 0.00 | e | 0.00 | c | 0.06 | a | 0.20 | o | 0.41 | a | 4.02 | a | 9.03 | a | |
2016 | 2.34 | 0.39 | c | 2.60 | 0.41 | 0.30 | d | 0.00 | y | 0.24 | f | 0.00 | o | 0.25 | q | 2.83 | 1.25 | 0.76 | a | 10.88 | d | |||||
2017 | 1.45 | 2.34 | a | 1.78 | a | 1.72 | a | 0.68 | j | 0.23 | b | 0.00 | b | 0.00 | h | 0.00 | f | 0.85 | c | 1.62 | c | 0.77 | b | 10.76 | c | |
2018 | 1.76 | a | 0.41 | d | 0.88 | k | 1.64 | b | 0.38 | c | 0.02 | e | 0.00 | g | 0.00 | l | 0.02 | 1.18 | 0.89 | 1.01 | 7.31 | c | ||||
2019 | 0.87 | 0.45 | 0.47 | 0.66 | 1.37 | 0.26 | 0.83 | 0.66 | 1.05 | 0.72 | 0.24 | 0.68 | 8.26 | |||||||||||||
2020 | 1.31 | 0.20 | 0.38 | 0.28 | 0.97 | 1.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.21 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.10 | 0.88 | 0.86 | 0.76 | 1.00 | 0.88 | 0.45 | 0.40 | 0.52 | 0.76 | 1.30 | 1.43 | 10.88 | |||||||||||||
S.D. | 0.74 | 0.77 | 0.60 | 0.54 | 0.92 | 0.79 | 0.65 | 0.48 | 0.54 | 0.70 | 0.88 | 0.87 | 3.07 | |||||||||||||
SKEW | 0.74 | 1.31 | 1.05 | 0.79 | 2.20 | 1.82 | 2.22 | 1.50 | 1.43 | 1.36 | 1.13 | 0.79 | 0.85 | |||||||||||||
MAX | 3.35 | 3.47 | 2.73 | 2.17 | 5.73 | 4.33 | 3.43 | 2.30 | 2.42 | 3.08 | 4.82 | 4.02 | 20.16 | |||||||||||||
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 | 5.06 | |||||||||||||
YRS | 74 | 75 | 72 | 79 | 76 | 76 | 71 | 69 | 74 | 78 | 76 | 66 | 35 |