YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.55 | 1.64 | 1.77 | 1.33 | s | 3.96 | i | |||
1925 | 1.15 | 1.26 | 1.21 | 0.97 | 3.54 | 0.43 | 0.02 | 0.38 | 0.93 | 0.08 | 1.18 | 1.25 | 12.40 | |||||||||||||
1926 | 1.19 | ----- | z | ----- | z | 1.01 | 1.54 | 0.19 | 0.00 | 1.10 | 0.11 | 0.66 | 2.95 | 0.95 | 9.70 | b | ||||||||||
1927 | 1.81 | a | 2.07 | 1.17 | 0.18 | 0.68 | 2.13 | 0.11 | 0.51 | 2.56 | q | 0.89 | 2.07 | 0.46 | b | 12.08 | a | |||||||||
1928 | 1.20 | a | 0.56 | s | 1.11 | 0.71 | 0.46 | 0.43 | x | ----- | z | 0.00 | 0.74 | 0.34 | 1.23 | t | 0.93 | w | 4.56 | e | ||||||
1929 | 1.15 | 0.56 | u | 0.42 | x | 1.27 | 1.04 | 0.67 | 0.00 | 0.00 | 0.03 | 0.13 | 0.03 | 3.94 | 8.26 | b | ||||||||||
1930 | 1.80 | d | 0.89 | 0.44 | 0.76 | 0.92 | 0.15 | 0.00 | 0.43 | 0.56 | 0.66 | 1.10 | 0.89 | a | 8.60 | |||||||||||
1931 | 0.72 | 0.46 | 1.73 | 0.72 | b | 0.65 | 2.21 | 0.00 | 0.00 | 0.42 | 1.34 | 1.14 | 2.22 | 11.61 | ||||||||||||
1932 | 1.60 | 0.81 | 1.35 | 1.01 | 2.20 | 0.00 | 0.00 | 0.11 | 0.00 | 1.09 | 1.94 | 0.36 | 10.47 | |||||||||||||
1933 | 0.86 | 0.97 | 0.72 | 0.19 | 2.04 | 0.25 | 0.12 | a | 0.11 | 0.90 | 1.05 | 0.65 | 1.18 | 9.04 | ||||||||||||
1934 | 1.33 | 0.25 | 1.69 | 1.26 | 0.66 | 0.43 | ----- | z | 0.82 | 0.53 | 1.30 | 1.71 | 1.38 | 11.36 | a | |||||||||||
1935 | 0.71 | a | 0.87 | 0.41 | a | 0.88 | 0.75 | ----- | z | 0.50 | 0.00 | 0.35 | 1.23 | 0.84 | 1.79 | 8.33 | a | |||||||||
1936 | 2.96 | 0.96 | 0.42 | 1.13 | 1.34 | a | 1.42 | 0.00 | 0.00 | 1.19 | 0.03 | 0.00 | 1.02 | 10.47 | ||||||||||||
1937 | 1.12 | 0.84 | 1.47 | 1.74 | 0.24 | 2.82 | 0.12 | 0.23 | 0.56 | 1.09 | 2.29 | 2.22 | 14.74 | |||||||||||||
1938 | 0.81 | 2.59 | 1.51 | 1.35 | 0.63 | 1.82 | 0.03 | 0.00 | 0.44 | 1.04 | 1.04 | 1.00 | 12.26 | |||||||||||||
1939 | 0.46 | 0.65 | 1.08 | 0.07 | 0.68 | 0.96 | 0.23 | 0.36 | 0.15 | 0.29 | 0.12 | 1.96 | 7.01 | |||||||||||||
1940 | 1.80 | 2.45 | 2.17 | 1.93 | 0.39 | 0.14 | 0.84 | 0.00 | 1.92 | 1.43 | 1.53 | 1.21 | 15.81 | |||||||||||||
1941 | 1.65 | 0.95 | 0.57 | 1.07 | 3.04 | 0.94 | 0.32 | 1.07 | 0.98 | 1.11 | 2.66 | a | 1.96 | 16.32 | ||||||||||||
1942 | 1.64 | a | 1.54 | 0.34 | 0.66 | 2.15 | 1.09 | 0.32 | 1.41 | 0.38 | 0.47 | 3.94 | b | 3.33 | 17.27 | |||||||||||
1943 | 1.99 | 0.46 | 1.12 | 1.86 | 0.53 | a | 1.68 | ----- | z | 0.95 | b | 0.00 | b | ----- | z | ----- | z | ----- | z | 8.59 | d | |||||
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 | 0.83 | a | 0.48 | 1.30 | 0.48 | 1.54 | 2.45 | 7.08 | f | |||||
1949 | 0.44 | 1.05 | 1.32 | 0.11 | 0.83 | 0.00 | 0.00 | 0.00 | 0.40 | 0.56 | 2.14 | 1.06 | 7.91 | |||||||||||||
1950 | 3.87 | 0.63 | 1.22 | 0.66 | 0.51 | 2.05 | 0.00 | 0.22 | 0.22 | 3.75 | 1.43 | 2.17 | 16.73 | |||||||||||||
1951 | 1.78 | 1.27 | 0.93 | 0.60 | 1.45 | 0.74 | 0.34 | 0.02 | 0.20 | 1.40 | 1.98 | a | 1.85 | 12.56 | ||||||||||||
1952 | 0.98 | 1.48 | 0.51 | 0.49 | 0.76 | 2.58 | 0.00 | 0.00 | 0.90 | 0.02 | 0.32 | 2.49 | 10.53 | |||||||||||||
1953 | 3.52 | 2.14 | 0.79 | 1.09 | 1.55 | 1.18 | 0.00 | 1.84 | 0.02 | 0.63 | 2.17 | 2.07 | 17.00 | |||||||||||||
1954 | 2.40 | 0.44 | 0.36 | 0.46 | 1.36 | 1.32 | 0.02 | 0.52 | 2.08 | 0.62 | 0.83 | 0.78 | 11.19 | |||||||||||||
1955 | 0.42 | 0.26 | 1.31 | 0.87 | 1.06 | 0.47 | 1.30 | 0.00 | 0.98 | 1.43 | 1.87 | 3.91 | 13.88 | |||||||||||||
1956 | 2.83 | 2.24 | 0.89 | 0.02 | 3.15 | 1.34 | 0.54 | 0.04 | 0.23 | 1.61 | 0.36 | 0.62 | 13.87 | |||||||||||||
1957 | 0.66 | 0.97 | 3.31 | 0.82 | 3.52 | 0.67 | 0.37 | 0.13 | 1.61 | 1.34 | 0.50 | 3.34 | 17.24 | |||||||||||||
1958 | 1.65 | 1.94 | 0.58 | 1.05 | 1.54 | 1.12 | 0.47 | 0.80 | 0.70 | 0.00 | 2.84 | 0.81 | 13.50 | |||||||||||||
1959 | 1.94 | 1.48 | 0.60 | c | 0.25 | 1.12 | 0.78 | 0.06 | 0.01 | 0.61 | 0.69 | 0.43 | 0.36 | 8.33 | ||||||||||||
1960 | 1.06 | 0.82 | 1.94 | 0.86 | 1.94 | 0.21 | 0.00 | 0.22 | 0.31 | 0.62 | 2.91 | a | 0.89 | 11.78 | ||||||||||||
1961 | 0.85 | 3.14 | 1.76 | 0.61 | 1.58 | 1.04 | 0.21 | 0.62 | 0.15 | 0.71 | 2.22 | 1.02 | 13.91 | |||||||||||||
1962 | 0.58 | 0.89 | 1.36 | 0.78 | 2.87 | 0.26 | 0.00 | 1.44 | 0.56 | 2.62 | 2.02 | 1.23 | 14.61 | |||||||||||||
1963 | 0.57 | 1.23 | 0.87 | 1.74 | 1.20 | 0.57 | 0.58 | 0.42 | 1.87 | 0.68 | 2.34 | 1.25 | 13.32 | |||||||||||||
1964 | 1.38 | 0.04 | 0.39 | 0.17 | 0.03 | 1.29 | 0.15 | 0.18 | 0.19 | 0.96 | 1.84 | a | 7.37 | 13.99 | ||||||||||||
1965 | 1.54 | 0.10 | 0.29 | 1.42 | 0.37 | 2.00 | 0.67 | 1.53 | 0.02 | 0.64 | 2.31 | a | 0.39 | 11.28 | ||||||||||||
1966 | 2.01 | 0.35 | 0.74 | 0.06 | 0.13 | 0.73 | 1.38 | 0.00 | 1.14 | 0.69 | 3.79 | 2.07 | 13.09 | |||||||||||||
1967 | 1.91 | 0.13 | 0.54 | 1.83 | 0.64 | 0.54 | 0.00 | 0.00 | 0.32 | 0.71 | 0.67 | 0.59 | 7.88 | |||||||||||||
1968 | 1.70 | 1.01 | 0.11 | 0.22 | 1.85 | 0.44 | 0.26 | 1.50 | 0.58 | 1.02 | 2.19 | 1.70 | 12.58 | |||||||||||||
1969 | 2.79 | 0.55 | 0.85 | 0.84 | 1.17 | 3.54 | 0.10 | 0.00 | 0.82 | 1.18 | 0.58 | 1.84 | 14.26 | |||||||||||||
1970 | 3.68 | 0.72 | 1.04 | 0.59 | 0.45 | 1.07 | 0.61 | 0.00 | 0.36 | 0.78 | 2.01 | 0.52 | 11.83 | |||||||||||||
1971 | 1.57 | 0.80 | 0.96 | 0.14 | 2.03 | 0.52 | 0.60 | 0.37 | 1.35 | 0.90 | 1.62 | 1.31 | 12.17 | |||||||||||||
1972 | 2.10 | 0.42 | 2.26 | 0.66 | 0.58 | 1.55 | 0.23 | 0.48 | 0.87 | 0.45 | 0.67 | 1.45 | 11.72 | |||||||||||||
1973 | 0.76 | 0.43 | 0.49 | 0.36 | 0.90 | 0.08 | 0.00 | 0.17 | 1.93 | 1.61 | 3.16 | 2.65 | 12.54 | |||||||||||||
1974 | 0.71 | 0.98 | 1.50 | 0.57 | 0.21 | 0.04 | 0.31 | 0.00 | 0.00 | 0.44 | 0.97 | 1.53 | 7.26 | |||||||||||||
1975 | 1.44 | 1.42 | 1.24 | 0.88 | 0.19 | 1.00 | 0.77 | 1.06 | 0.00 | 1.71 | 0.70 | 1.55 | 11.96 | |||||||||||||
1976 | 1.57 | 1.27 | 0.54 | 1.18 | 0.35 | 0.71 | 0.19 | 5.37 | 0.32 | 0.28 | 0.46 | 0.17 | 12.41 | |||||||||||||
1977 | 0.30 | 0.68 | 0.49 | 0.00 | 3.64 | 0.30 | 0.02 | 1.19 | 1.40 | 0.61 | 2.16 | 2.86 | 13.65 | |||||||||||||
1978 | 1.86 | 0.76 | 0.68 | 1.95 | 0.71 | b | 1.45 | 1.47 | 1.43 | 0.32 | 0.02 | 1.75 | 1.03 | 13.43 | ||||||||||||
1979 | 1.53 | 1.59 | 1.40 | 1.92 | 0.60 | 0.82 | 0.10 | 0.61 | 0.61 | ----- | z | ----- | z | ----- | z | 9.18 | c | |||||||||
1980 | 0.02 | v | 1.22 | b | 0.64 | 0.84 | 1.65 | 2.08 | 0.11 | 0.06 | 0.33 | 0.87 | 1.86 | 2.21 | 11.87 | a | ||||||||||
1981 | 0.95 | 1.71 | a | 1.34 | 0.50 | 2.21 | 1.50 | 0.24 | 0.00 | 1.80 | 0.96 | 2.80 | 5.79 | 19.80 | ||||||||||||
1982 | 1.68 | 1.06 | 1.31 | 1.12 | 0.27 | 2.34 | 0.35 | 0.38 | 4.51 | 2.70 | 0.44 | 0.89 | 17.05 | |||||||||||||
1983 | 1.59 | 2.97 | b | 3.04 | 2.65 | 1.84 | 0.65 | 1.13 | 0.63 | 0.39 | 0.64 | 2.46 | a | 4.18 | 22.17 | |||||||||||
1984 | 0.60 | b | 2.15 | 2.62 | 1.94 | 1.06 | 2.45 | 0.00 | 0.57 | 0.71 | 1.53 | 4.66 | a | 1.08 | 19.37 | |||||||||||
1985 | 0.26 | 0.98 | a | 1.15 | 0.58 | 1.15 | 0.48 | 0.09 | 0.46 | 1.33 | 0.72 | 1.40 | a | 1.17 | 9.77 | |||||||||||
1986 | 2.41 | 3.34 | 0.87 | 0.45 | 0.74 | 0.46 | 0.77 | 0.46 | 1.38 | 0.72 | 2.48 | 0.56 | 14.64 | |||||||||||||
1987 | 2.58 | a | 1.49 | 2.11 | 0.22 | 1.18 | 0.68 | 1.08 | 0.09 | 0.04 | 0.00 | 0.84 | 3.33 | 13.64 | ||||||||||||
1988 | 2.05 | 0.30 | 1.20 | 1.60 | 0.85 | 1.44 | 0.00 | 0.00 | 0.65 | 0.00 | 3.84 | 0.35 | 12.28 | |||||||||||||
1989 | 2.17 | 0.78 | 2.15 | a | 1.72 | 1.23 | 0.21 | 0.15 | 1.31 | 0.39 | 0.88 | 0.80 | 0.46 | 12.25 | ||||||||||||
1990 | 2.81 | 0.30 | 0.82 | 1.03 | 1.72 | 0.46 | 0.46 | a | 0.96 | 0.00 | 0.80 | 0.99 | 0.83 | 11.18 | ||||||||||||
1991 | 0.74 | 0.48 | 1.46 | 0.51 | 2.00 | 1.35 | 0.48 | 0.36 | 0.00 | 0.82 | 2.60 | 1.22 | 12.02 | |||||||||||||
1992 | 0.37 | 0.89 | 0.35 | 2.56 | 0.30 | 0.63 | 0.99 | 0.03 | 0.38 | 1.88 | 1.92 | 1.46 | 11.76 | |||||||||||||
1993 | 1.16 | a | 0.83 | 2.14 | 1.29 | 2.41 | 1.51 | 0.75 | 0.67 | 0.00 | 0.14 | 0.29 | 0.79 | 11.98 | ||||||||||||
1994 | 1.00 | 0.82 | 1.16 | 1.27 | 1.86 | 1.81 | 0.30 | 0.01 | 0.29 | 1.13 | 2.13 | 0.80 | 12.58 | |||||||||||||
1995 | 3.48 | 1.52 | 1.04 | 1.75 | 1.38 | 2.22 | 1.07 | 0.12 | 1.01 | 0.73 | 2.43 | 2.15 | 18.90 | |||||||||||||
1996 | 2.42 | 2.46 | a | 0.74 | 1.99 | 1.82 | 0.64 | 0.21 | 0.00 | 0.70 | 1.10 | 4.40 | 4.58 | 21.06 | ||||||||||||
1997 | 2.15 | 1.48 | 1.12 | 1.37 | 1.01 | 2.57 | 0.46 | 0.15 | 1.17 | 1.43 | 1.09 | 0.53 | 14.53 | |||||||||||||
1998 | 2.53 | 1.08 | 1.03 | 1.61 | 5.57 | 0.98 | 0.19 | 0.20 | 0.28 | 0.50 | 3.34 | 2.19 | 19.50 | |||||||||||||
1999 | 1.55 | 1.61 | 0.67 | 0.27 | 1.11 | 0.14 | 0.43 | 0.98 | 0.00 | 1.36 | 1.38 | 0.46 | a | 9.96 | ||||||||||||
2000 | 2.67 | a | 2.11 | 1.32 | 0.36 | 0.48 | 0.22 | 0.00 | ----- | z | 0.35 | 1.65 | 1.04 | 0.68 | b | 10.88 | a | |||||||||
2001 | 0.66 | a | 0.50 | a | 0.91 | 1.98 | ----- | z | ----- | z | 0.61 | 0.18 | 0.70 | ----- | z | 1.85 | u | 0.91 | v | 5.54 | e | |||||
2002 | 1.04 | 0.66 | a | 0.84 | a | 0.92 | 1.38 | a | 0.60 | 0.31 | 0.15 | 0.17 | ----- | z | 0.54 | b | 2.59 | 9.20 | a | |||||||
2003 | 1.85 | 1.39 | 2.00 | 1.39 | 1.06 | 0.03 | 0.07 | 1.29 | 0.39 | 0.79 | a | 1.68 | 2.70 | a | 14.64 | |||||||||||
2004 | 2.01 | a | 1.69 | c | 0.72 | a | 1.79 | 1.80 | 1.45 | 0.17 | 1.00 | 0.64 | 1.71 | 0.75 | 1.33 | 15.06 | ||||||||||
2005 | 0.45 | ----- | z | 0.76 | 1.85 | a | 3.65 | b | 0.55 | 0.23 | 0.00 | ----- | z | 2.37 | 1.52 | ----- | z | 11.38 | c | |||||||
2006 | 2.72 | a | 0.72 | a | 1.12 | 1.50 | c | 1.32 | b | 1.92 | 0.02 | b | 0.22 | 0.16 | a | ----- | z | 2.32 | f | 2.65 | 12.35 | b | ||||
2007 | ----- | z | 0.72 | b | 0.71 | a | 1.54 | e | 0.57 | b | 1.74 | 0.12 | 0.77 | 0.29 | 2.14 | i | 1.54 | d | 0.80 | c | 8.80 | b | ||||
2008 | 1.47 | f | 0.56 | l | 0.96 | 0.77 | 2.94 | 0.51 | c | 0.03 | 0.17 | n | 0.00 | 0.40 | 0.80 | a | 1.47 | b | 7.88 | c | ||||||
2009 | 0.68 | 0.69 | b | 0.89 | c | 1.01 | b | ----- | z | 0.57 | 0.00 | 0.14 | ----- | z | 1.81 | 1.31 | 1.44 | 8.54 | b | |||||||
2010 | 3.00 | a | 1.26 | a | 1.11 | 2.19 | 3.09 | 2.33 | 0.11 | 0.22 | 2.59 | 2.04 | 1.17 | 3.77 | 22.88 | |||||||||||
2011 | 1.24 | 1.59 | 1.75 | 1.23 | b | 2.20 | a | 0.64 | 1.22 | 0.35 | a | 0.00 | 0.66 | b | 0.39 | a | 1.25 | a | 12.52 | |||||||
2012 | 2.20 | 0.63 | 1.62 | 2.42 | 0.98 | b | 2.09 | 0.52 | a | 0.00 | a | 0.01 | b | 1.31 | f | 2.19 | b | 2.64 | d | 15.30 | a | |||||
2013 | 0.24 | b | 0.00 | c | 0.64 | a | 0.55 | a | 2.18 | 1.67 | b | 0.00 | a | 0.94 | 2.44 | a | 0.56 | 0.82 | a | 0.84 | a | 10.88 | ||||
2014 | 1.23 | b | 3.39 | 2.47 | 1.09 | c | 0.95 | 0.38 | 0.35 | e | 2.51 | d | 0.47 | c | 1.04 | e | 2.19 | b | 2.97 | b | 19.04 | |||||
2015 | 0.64 | d | 1.29 | a | 0.96 | 0.48 | a | 1.18 | a | 0.23 | 0.79 | i | 0.04 | c | 0.18 | i | 0.73 | b | 2.62 | a | 2.64 | a | 10.81 | b | ||
2016 | 1.38 | b | 0.71 | a | 1.63 | b | 0.55 | b | 1.94 | 0.76 | 0.94 | 0.00 | 0.11 | d | 3.08 | a | 0.83 | b | 1.80 | a | 13.73 | |||||
2017 | 1.68 | a | 1.52 | b | 1.63 | a | 2.44 | 1.22 | e | 0.45 | a | 0.00 | b | 0.58 | a | 1.03 | c | 1.35 | b | 1.50 | 0.75 | a | 14.15 | |||
2018 | 1.17 | 0.73 | c | 1.85 | 2.41 | 0.38 | e | 0.89 | b | 0.00 | c | 0.14 | 0.00 | b | 1.36 | b | 0.63 | 1.51 | 11.07 | |||||||
2019 | 1.37 | a | 3.39 | 0.93 | a | 2.12 | 2.24 | a | 0.91 | a | 0.15 | a | 0.61 | 2.15 | 0.54 | a | 0.24 | a | 1.19 | 15.84 | ||||||
2020 | 1.13 | a | 0.46 | a | 0.78 | a | 0.83 | 2.26 | a | 1.02 | 0.00 | 0.00 | a | 0.16 | 0.87 | 3.03 | 1.13 | 11.67 | ||||||||
2021 | 1.14 | 1.35 | 0.29 | a | 0.16 | a | 0.68 | a | 0.34 | b | 0.07 | a | 0.05 | a | 1.46 | 1.33 | 1.29 | 2.12 | 10.28 | |||||||
2022 | 1.63 | 0.47 | a | 1.45 | 1.54 | 2.03 | 2.21 | 0.15 | 0.12 | 0.33 | 0.47 | a | 1.93 | 1.92 | c | 14.25 | ||||||||||
2023 | 0.61 | 0.19 | a | 1.15 | a | 1.00 | a | 2.92 | 0.30 | a | 0.00 | 0.10 | 1.03 | 1.06 | 1.45 | 1.72 | 11.53 | |||||||||
2024 | 2.58 | 1.81 | 0.87 | 0.58 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.26 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.55 | 1.16 | 1.14 | 1.06 | 1.42 | 1.03 | 0.31 | 0.48 | 0.68 | 0.99 | 1.64 | 1.73 | 13.39 | |||||||||||||
S.D. | 0.84 | 0.78 | 0.62 | 0.67 | 0.99 | 0.78 | 0.37 | 0.72 | 0.73 | 0.68 | 1.01 | 1.22 | 3.35 | |||||||||||||
SKEW | 0.65 | 1.11 | 1.06 | 0.44 | 1.28 | 0.83 | 1.36 | 3.79 | 2.16 | 1.34 | 0.68 | 1.82 | 0.69 | |||||||||||||
MAX | 3.87 | 3.39 | 3.31 | 2.65 | 5.57 | 3.54 | 1.47 | 5.37 | 4.51 | 3.75 | 4.66 | 7.37 | 22.88 | |||||||||||||
MIN | 0.24 | 0.00 | 0.11 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 7.01 | |||||||||||||
YRS | 92 | 90 | 93 | 94 | 92 | 91 | 91 | 93 | 92 | 89 | 91 | 90 | 75 |