YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.20 | 0.78 | 0.59 | 0.86 | 2.43 | h | ||||
1932 | 1.19 | 0.10 | a | 3.40 | 1.70 | 2.14 | 1.74 | 0.50 | 0.00 | 0.00 | 0.69 | 0.65 | 0.50 | 12.61 | ||||||||||||
1933 | 1.01 | 1.73 | 1.04 | 0.96 | 1.00 | 0.10 | 0.00 | 0.17 | 0.60 | ----- | z | 1.10 | 0.60 | 8.31 | a | |||||||||||
1934 | 1.50 | 1.40 | 0.72 | 1.12 | 0.23 | 1.89 | 0.20 | ----- | z | 0.45 | 1.24 | 1.41 | 1.89 | 12.05 | a | |||||||||||
1935 | 1.95 | a | 0.82 | 1.21 | a | 2.32 | 1.50 | ----- | z | ----- | z | ----- | z | ----- | z | 0.16 | 0.74 | 1.38 | 10.08 | d | ||||||
1936 | 2.21 | 1.52 | 0.73 | 1.41 | 0.18 | 1.63 | ----- | z | 0.30 | ----- | z | ----- | z | 0.00 | 0.98 | 8.96 | c | |||||||||
1937 | 1.29 | 1.10 | 0.85 | ----- | z | ----- | z | 0.59 | 0.74 | 0.00 | 0.34 | 1.12 | 2.00 | 2.50 | 10.53 | b | ||||||||||
1938 | 1.41 | 0.61 | 2.56 | 1.80 | ----- | z | ----- | z | 1.45 | 0.17 | 0.24 | ----- | z | ----- | z | ----- | z | 8.24 | e | |||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1952 | ----- | z | ----- | z | 1.50 | b | 0.33 | 0.57 | 1.49 | 0.15 | 0.60 | 0.22 | 0.00 | 0.60 | 0.54 | d | 6.00 | b | ||||||||
1953 | 1.15 | c | 0.60 | 0.50 | b | 0.25 | 2.88 | a | 1.94 | 0.00 | 0.03 | 0.00 | ----- | z | 0.78 | 1.26 | 9.39 | a | ||||||||
1954 | 0.45 | f | ----- | z | 1.00 | 0.02 | 0.10 | 0.85 | 0.00 | 0.04 | 0.00 | 0.60 | 0.08 | ----- | z | 2.69 | c | |||||||||
1955 | ----- | z | ----- | z | 0.55 | 2.79 | 1.44 | a | 1.00 | 0.10 | 0.00 | 0.38 | 0.45 | 1.51 | 3.35 | 11.57 | b | |||||||||
1956 | 3.65 | a | 0.42 | 0.50 | 1.14 | 2.32 | 0.23 | 0.26 | a | 0.00 | 0.00 | 2.07 | 0.05 | 1.18 | 11.82 | |||||||||||
1957 | 0.80 | 0.98 | 2.56 | 0.88 | 2.46 | 0.82 | 0.05 | 0.12 | 0.21 | a | 1.61 | 0.98 | 1.61 | 13.08 | ||||||||||||
1958 | 1.28 | a | 2.43 | 0.52 | 0.92 | 0.66 | 1.29 | 0.29 | 0.14 | 0.08 | 0.00 | 0.97 | 0.79 | 9.37 | ||||||||||||
1959 | 0.96 | 0.66 | 1.25 | 0.16 | 0.46 | 0.28 | 0.04 | 0.26 | 2.78 | 0.54 | 0.15 | 0.76 | 8.30 | |||||||||||||
1960 | 1.61 | 1.20 | 1.14 | 0.27 | 0.86 | 0.00 | 0.70 | 0.38 | 0.00 | 0.19 | 2.01 | 0.63 | 8.99 | |||||||||||||
1961 | 1.06 | 0.98 | c | 1.48 | 0.00 | 0.12 | 0.06 | 0.38 | 0.09 | 0.47 | 1.31 | 0.16 | 0.67 | a | 6.78 | |||||||||||
1962 | 0.85 | 1.55 | 1.22 | 0.93 | 1.77 | a | 0.19 | 0.36 | 0.00 | 0.12 | 2.24 | 1.08 | 0.45 | 10.76 | ||||||||||||
1963 | 1.28 | 1.60 | 0.24 | 1.55 | 1.48 | 1.68 | 0.00 | 0.24 | 0.46 | 1.17 | 1.86 | 0.67 | 12.23 | |||||||||||||
1964 | 1.84 | 0.10 | 0.29 | b | 1.00 | 1.37 | 2.20 | 0.04 | 0.28 | 0.00 | 0.17 | 1.60 | 2.23 | 11.12 | ||||||||||||
1965 | 1.99 | 0.06 | 0.03 | ----- | z | 0.61 | 0.53 | 0.14 | 0.64 | 0.16 | 0.00 | 0.93 | a | 0.22 | b | 5.31 | a | |||||||||
1966 | 0.37 | 0.41 | 0.07 | 0.00 | 0.52 | 0.26 | 0.00 | 0.00 | 0.05 | 0.25 | 2.64 | 1.01 | 5.58 | |||||||||||||
1967 | 2.53 | 0.60 | 0.36 | 1.28 | 0.56 | 2.41 | 0.08 | 0.00 | 0.51 | 0.28 | 1.06 | 0.73 | 10.40 | |||||||||||||
1968 | 0.61 | a | 1.30 | 0.48 | 0.65 | 1.69 | 0.24 | 0.02 | 4.45 | 0.00 | 0.67 | 2.33 | 1.45 | 13.89 | ||||||||||||
1969 | 3.96 | 0.10 | a | 0.21 | 0.56 | 0.32 | 1.60 | 0.00 | 0.00 | 0.24 | 1.32 | 0.47 | 1.81 | 10.59 | ||||||||||||
1970 | 4.04 | 0.00 | 1.32 | 1.30 | 0.74 | 1.18 | 0.60 | 0.00 | 1.15 | 0.73 | 2.81 | 1.78 | 15.65 | |||||||||||||
1971 | 2.17 | c | 0.56 | 1.97 | c | 0.47 | 0.20 | 1.62 | 0.00 | 0.00 | 1.69 | a | 0.67 | 1.78 | 1.64 | 12.77 | ||||||||||
1972 | 0.79 | 1.60 | 1.45 | 0.63 | 0.82 | 2.71 | 0.00 | 0.00 | 0.86 | 0.86 | 0.89 | 1.60 | 12.21 | |||||||||||||
1973 | 1.08 | 0.32 | 0.64 | 2.09 | 0.14 | 0.60 | 0.30 | 0.12 | 1.25 | 0.78 | 2.01 | 1.56 | 10.89 | |||||||||||||
1974 | 0.90 | 0.54 | 2.22 | 0.56 | 0.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.09 | ----- | z | 5.31 | g | |||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | 0.96 | 2.39 | 1.07 | 0.25 | 0.10 | 4.08 | 1.13 | 1.81 | 11.79 | d | ||||||||
1976 | 1.33 | 1.49 | 0.86 | 1.38 | 0.43 | 1.28 | 1.25 | 1.54 | 0.77 | 0.71 | 0.34 | 0.16 | 11.54 | |||||||||||||
1977 | 1.31 | 0.70 | 1.26 | 0.76 | 2.90 | 0.73 | 0.48 | 1.37 | 1.80 | 0.31 | 2.17 | 2.72 | 16.51 | |||||||||||||
1978 | 2.75 | 2.51 | 1.28 | 4.42 | 0.51 | 0.66 | b | 0.75 | 0.77 | 1.03 | 0.00 | 1.50 | 0.82 | 17.00 | ||||||||||||
1979 | ----- | z | 1.63 | 1.38 | 1.76 | 0.97 | 0.75 | 0.11 | 1.53 | 0.00 | 2.07 | 1.05 | 0.79 | 12.04 | a | |||||||||||
1980 | 2.07 | 2.11 | ----- | z | 0.34 | 3.61 | 2.28 | 0.25 | 0.00 | 1.87 | 0.82 | 1.04 | 2.04 | a | 16.43 | a | ||||||||||
1981 | 1.44 | 1.31 | 2.82 | 1.90 | 2.27 | 1.16 | 0.24 | 0.20 | 0.19 | 2.14 | 3.34 | a | 4.43 | c | 21.44 | |||||||||||
1982 | 2.22 | a | 1.93 | 1.92 | a | 1.80 | b | 0.16 | w | 4.47 | 2.13 | 0.11 | 1.87 | e | 2.70 | 2.64 | d | 5.24 | 27.03 | a | ||||||
1983 | 3.72 | b | 2.28 | f | 4.34 | d | 1.98 | d | 2.58 | 1.45 | 1.48 | 3.84 | 0.60 | 1.09 | 4.02 | a | 4.21 | a | 29.31 | a | ||||||
1984 | 0.37 | 1.71 | 2.65 | b | 1.63 | 1.16 | 2.43 | 0.78 | 0.30 | 0.23 | 1.45 | ----- | z | 0.95 | 13.66 | a | ||||||||||
1985 | 0.12 | 0.47 | 1.19 | a | 0.37 | 1.71 | 0.46 | 1.86 | a | 0.04 | 1.84 | c | 0.75 | 2.80 | d | 1.09 | 12.70 | |||||||||
1986 | 1.22 | 5.19 | a | 1.99 | 1.74 | a | 2.06 | a | 0.02 | 0.00 | 0.25 | 2.01 | f | 0.11 | a | ----- | z | ----- | z | 12.58 | c | |||||
1987 | 1.69 | a | 2.30 | 1.39 | 0.45 | a | 1.90 | a | 0.77 | j | 0.44 | ----- | z | ----- | z | 0.03 | 0.94 | a | 0.43 | c | 9.57 | c | ||||
1988 | 1.01 | 0.17 | 1.23 | 1.65 | 0.98 | 0.90 | b | 0.05 | 0.00 | 0.36 | 0.00 | 4.81 | a | 1.73 | b | 12.89 | ||||||||||
1989 | 1.55 | 1.24 | 3.91 | a | 1.12 | a | 0.78 | 0.00 | 0.00 | 0.46 | a | 1.00 | 1.16 | g | 0.93 | 0.00 | 10.99 | a | ||||||||
1990 | 1.52 | 1.38 | 0.39 | a | 1.86 | a | 2.24 | 0.46 | a | ----- | z | 1.62 | 0.21 | 0.89 | 1.10 | 1.06 | 12.73 | a | ||||||||
1991 | 0.71 | 0.88 | 1.78 | 2.62 | 3.99 | a | 1.55 | 0.00 | 0.35 | a | 0.54 | 1.40 | 1.80 | 0.87 | 16.49 | |||||||||||
1992 | 0.32 | b | 1.06 | 0.86 | 0.88 | 0.22 | 2.96 | 0.18 | 0.00 | ----- | z | 0.91 | a | 1.55 | c | 2.13 | 11.07 | a | ||||||||
1993 | 1.45 | 1.44 | b | 5.66 | b | 2.73 | 0.66 | c | 1.72 | 0.86 | 0.47 | 0.00 | 0.99 | 0.28 | b | 0.71 | 16.97 | |||||||||
1994 | 1.21 | 2.07 | b | 0.31 | 1.93 | 0.92 | 0.35 | 0.00 | 0.00 | 0.05 | a | 1.05 | c | 2.30 | b | 1.88 | 12.07 | |||||||||
1995 | 2.51 | a | 0.14 | m | 2.84 | 2.19 | 2.27 | 1.30 | 1.60 | 0.17 | 0.11 | a | 1.06 | f | 2.22 | a | 3.79 | c | 19.00 | b | ||||||
1996 | 2.55 | d | 1.46 | 2.01 | 1.97 | 2.08 | 0.53 | 0.00 | 0.28 | 0.16 | 1.49 | 1.73 | 5.82 | a | 20.08 | |||||||||||
1997 | 4.57 | 0.30 | 0.94 | 2.33 | 1.70 | 1.45 | b | 0.43 | 0.47 | b | 0.37 | 0.39 | 1.04 | 0.99 | d | 14.98 | ||||||||||
1998 | 3.02 | 2.23 | 1.70 | 1.91 | 6.59 | 3.12 | 0.86 | 0.00 | 1.45 | d | 0.12 | 1.93 | c | 0.91 | a | 23.84 | ||||||||||
1999 | 3.29 | j | 2.61 | b | 1.13 | 0.88 | 1.03 | 0.42 | b | 0.00 | 0.24 | 0.00 | 0.33 | 0.61 | a | 1.37 | d | 8.62 | a | |||||||
2000 | 1.87 | b | 2.80 | a | 2.25 | 0.93 | 1.19 | 0.67 | 0.00 | 0.37 | 0.49 | d | 3.54 | 1.01 | 1.06 | a | 16.18 | |||||||||
2001 | ----- | z | 0.62 | a | 2.16 | b | 1.23 | a | 0.60 | e | 0.49 | a | 1.74 | a | 0.00 | 0.00 | 0.50 | a | 2.09 | g | 2.34 | k | 7.34 | c | ||
2002 | 1.72 | d | 0.58 | a | 1.24 | a | 1.40 | g | 0.47 | b | 0.74 | 0.45 | a | 0.00 | 0.50 | a | 0.23 | 0.44 | 2.76 | k | 6.37 | b | ||||
2003 | 1.66 | a | 0.89 | a | 1.30 | 2.95 | 3.20 | 0.07 | 0.15 | 0.73 | a | 0.00 | 0.00 | ----- | z | ----- | z | 10.95 | b | |||||||
2004 | ----- | z | 1.36 | n | 0.52 | a | 0.70 | 3.46 | d | 0.29 | c | 0.22 | 1.21 | a | 0.60 | ----- | z | ----- | z | ----- | z | 7.00 | e | |||
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
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 | ----- | z | ----- | z | 0.00 | l |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.27 | n | 0.68 | b | 1.12 | d | 1.80 | j |
2020 | 2.29 | e | 1.11 | a | 0.53 | f | 0.42 | k | 2.56 | c | 1.70 | f | ----- | z | ----- | z | ----- | z | 0.32 | x | ----- | z | ----- | z | 5.96 | i |
2021 | ----- | z | 1.80 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.69 | 1.21 | 1.44 | 1.31 | 1.46 | 1.15 | 0.42 | 0.44 | 0.52 | 0.91 | 1.39 | 1.53 | 13.22 | |||||||||||||
S.D. | 0.99 | 0.91 | 1.09 | 0.88 | 1.21 | 0.94 | 0.55 | 0.83 | 0.63 | 0.88 | 0.98 | 1.23 | 4.05 | |||||||||||||
SKEW | 1.05 | 1.62 | 1.55 | 0.85 | 1.64 | 1.09 | 1.52 | 3.40 | 1.62 | 1.60 | 1.16 | 1.76 | 0.64 | |||||||||||||
MAX | 4.57 | 5.19 | 5.66 | 4.42 | 6.59 | 4.47 | 2.13 | 4.45 | 2.78 | 4.08 | 4.81 | 5.82 | 23.84 | |||||||||||||
MIN | 0.12 | 0.00 | 0.03 | 0.00 | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 5.58 | |||||||||||||
YRS | 53 | 54 | 58 | 56 | 57 | 56 | 56 | 56 | 55 | 53 | 56 | 54 | 31 |