YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | 0.86 | j | 2.27 | 0.76 | d | 0.36 | d | 0.55 | c | 0.76 | 0.69 | a | 0.70 | 0.70 | b | 1.20 | 0.69 | a | 1.48 | 2.27 | y | |||||
1940 | 0.32 | 1.89 | 0.64 | 1.10 | 0.79 | 0.62 | 1.14 | 0.58 | 1.47 | 1.24 | 1.11 | 0.78 | 1.89 | |||||||||||||
1941 | 0.46 | b | 0.56 | 0.91 | 0.88 | 1.12 | 0.69 | 0.10 | 1.01 | 0.89 | 1.91 | 1.30 | 3.14 | 3.14 | b | |||||||||||
1942 | 0.92 | 0.57 | a | 0.89 | 0.85 | 0.65 | 1.17 | a | 0.96 | 0.41 | 0.11 | 1.20 | 1.36 | 1.19 | 1.36 | b | ||||||||||
1943 | 0.57 | 1.31 | 2.16 | 0.68 | 0.60 | 1.77 | 0.32 | 0.47 | 1.38 | 1.53 | 0.31 | 1.71 | 2.16 | |||||||||||||
1944 | 0.98 | 0.90 | 1.05 | 0.69 | 1.28 | 0.58 | 0.11 | 0.47 | 1.12 | 0.52 | 0.75 | 0.79 | 1.28 | |||||||||||||
1945 | 1.71 | 1.06 | 0.82 | 0.91 | 1.10 | 0.24 | 0.28 | 0.36 | 1.30 | 1.11 | 1.08 | 1.55 | 1.71 | |||||||||||||
1946 | 1.71 | 1.21 | 1.12 | 0.69 | 0.66 | 1.08 | 1.59 | 0.16 | 0.98 | b | 0.77 | 3.03 | 1.59 | 3.03 | b | |||||||||||
1947 | 1.12 | 0.94 | 0.94 | 0.74 | 0.74 | 0.96 | 0.54 | 0.75 | 0.84 | 1.57 | 1.29 | 1.02 | 1.57 | |||||||||||||
1948 | 0.73 | 1.45 | 1.57 | 1.22 | 1.18 | a | 2.45 | 0.92 | 0.67 | 1.30 | 0.82 | 0.86 | 1.38 | b | 2.45 | c | ||||||||||
1949 | 0.37 | 2.11 | 1.30 | a | 0.60 | 0.86 | 0.89 | 0.43 | 0.74 | 0.70 | 1.91 | 1.61 | 1.64 | 2.11 | a | |||||||||||
1950 | 1.27 | 1.84 | 2.10 | 1.10 | 0.43 | 0.60 | 0.49 | 1.67 | 1.20 | 1.40 | 1.46 | 1.89 | 2.10 | |||||||||||||
1951 | 0.86 | 1.94 | 0.80 | 0.32 | a | 0.90 | 0.22 | 0.09 | 1.31 | 1.60 | 1.26 | 0.77 | 0.78 | 1.94 | a | |||||||||||
1952 | 0.63 | 1.25 | 0.66 | 1.04 | 0.70 | 0.63 | 0.50 | 0.54 | 0.33 | 0.66 | 0.28 | 0.58 | 1.25 | |||||||||||||
1953 | 1.70 | 0.66 | 1.10 | 0.83 | 1.25 | 0.99 | 0.77 | 0.67 | 1.04 | 1.51 | 0.89 | 1.89 | 1.89 | |||||||||||||
1954 | 1.76 | 0.82 | 0.93 | 0.68 | a | 0.78 | 1.02 | 0.71 | 1.20 | 0.75 | 0.89 | 0.83 | 1.22 | 1.76 | a | |||||||||||
1955 | 0.40 | 1.78 | 0.78 | 0.84 | 0.79 | 1.08 | 0.69 | 0.37 | 0.86 | 1.45 | 1.60 | 2.27 | 2.27 | |||||||||||||
1956 | 1.11 | 0.69 | 0.98 | 0.31 | 0.67 | 0.91 | 1.53 | 0.80 | 0.92 | 1.85 | 1.22 | 1.70 | 1.85 | |||||||||||||
1957 | 0.62 | 0.71 | 2.03 | 0.97 | 0.68 | 0.68 | 0.51 | 0.43 | 1.10 | 1.25 | 0.78 | 0.95 | 2.03 | |||||||||||||
1958 | 1.86 | 0.95 | 0.38 | 1.04 | 0.28 | 0.54 | 0.08 | 0.35 | 0.95 | 1.68 | 1.26 | 1.57 | 1.86 | |||||||||||||
1959 | 1.14 | 0.53 | 0.60 | 0.99 | 0.84 | 1.34 | 0.25 | 0.53 | 2.12 | 1.34 | 2.88 | 1.15 | 2.88 | |||||||||||||
1960 | 0.70 | 1.15 | 0.63 | 0.57 | 1.46 | 0.77 | 0.00 | 0.98 | 0.85 | 1.44 | 1.78 | b | 0.87 | 1.78 | b | |||||||||||
1961 | 1.01 | 1.53 | 0.56 | 0.85 | 0.79 | 0.92 | 0.47 | 0.60 | 1.05 | 0.93 | 1.35 | 1.27 | a | 1.53 | a | |||||||||||
1962 | 1.18 | 0.63 | 0.70 | 0.70 | 0.76 | 0.74 | 0.36 | 1.03 | 1.27 | 0.88 | 2.00 | 0.85 | 2.00 | |||||||||||||
1963 | 0.45 | 2.33 | 0.86 | 0.72 | 0.40 | 0.76 | 0.71 | 1.25 | 0.31 | 1.75 | 0.96 | 1.72 | 2.33 | |||||||||||||
1964 | 2.80 | 0.75 | 1.42 | 1.11 | 0.87 | 1.29 | 0.68 | 0.67 | 0.95 | 1.33 | 1.85 | 2.17 | 2.80 | |||||||||||||
1965 | 3.46 | 0.85 | 0.22 | 1.50 | 0.57 | 0.37 | 0.80 | 1.10 | 0.50 | 1.06 | 1.22 | 1.31 | 3.46 | |||||||||||||
1966 | 1.11 | 1.02 | 0.64 | 1.29 | 0.70 | 1.75 | 1.36 | 0.25 | 1.16 | 2.06 | 1.30 | 0.88 | 2.06 | |||||||||||||
1967 | 1.45 | 1.37 | 0.94 | 0.79 | 0.64 | 1.22 | 0.08 | 0.02 | 0.86 | 0.95 | 0.77 | 0.88 | 1.45 | |||||||||||||
1968 | 1.05 | 1.91 | 2.52 | 0.55 | 0.85 | 2.55 | 0.55 | 1.41 | 1.88 | 0.76 | 1.47 | 2.01 | 2.55 | |||||||||||||
1969 | 2.32 | 0.63 | 0.63 | 1.11 | 2.55 | 1.52 | 0.18 | 0.22 | 1.25 | 0.89 | 1.59 | 1.33 | 2.55 | |||||||||||||
1970 | 1.03 | 1.22 | 1.03 | 1.12 | 1.42 | 0.81 | 0.85 | 0.59 | 0.98 | 0.94 | 0.73 | 1.40 | 1.42 | |||||||||||||
1971 | 1.98 | 0.88 | 0.87 | 0.75 | 1.45 | 1.39 | 0.60 | 1.00 | 1.82 | 0.91 | 0.95 | 1.13 | 1.98 | |||||||||||||
1972 | 1.37 | 1.15 | 1.30 | 0.73 | 0.75 | 2.00 | 1.32 | 1.03 | 1.19 | 0.60 | 1.49 | 1.19 | 2.00 | |||||||||||||
1973 | 0.98 | 0.76 | 0.80 | 0.85 | 0.68 | 1.36 | 0.14 | 0.24 | 0.71 | 1.34 | 1.42 | 0.85 | 1.42 | |||||||||||||
1974 | 2.02 | 1.37 | 0.98 | 0.91 | 0.75 | 2.26 | 0.66 | 0.47 | 0.45 | 0.76 | 1.43 | 1.91 | 2.26 | |||||||||||||
1975 | 1.88 | 1.29 | 0.68 | 0.64 | 0.95 | 0.93 | 0.34 | 3.39 | 0.21 | 1.20 | 1.10 | 1.52 | 3.39 | |||||||||||||
1976 | 1.10 | 1.07 | 0.45 | 1.04 | 0.42 | 1.88 | 1.08 | 1.39 | 0.95 | 0.79 | 0.56 | 0.99 | 1.88 | |||||||||||||
1977 | 0.35 | 1.08 | 1.19 | 0.82 | 0.82 | 0.83 | 0.47 | 2.20 | 1.25 | 1.00 | 0.72 | 1.29 | 2.20 | |||||||||||||
1978 | 0.84 | 0.56 | 0.51 | 1.59 | 0.52 | 0.77 | 0.42 | 0.66 | 1.76 | 0.70 | 1.40 | 1.52 | 1.76 | |||||||||||||
1979 | 1.15 | 1.38 | 0.65 | 0.85 | 0.38 | 0.35 | 1.37 | 0.43 | 0.92 | 1.32 | 0.64 | 2.36 | 2.36 | |||||||||||||
1980 | 1.17 | 1.01 | 0.65 | 1.08 | 0.99 | 0.86 | 0.80 | 1.15 | 1.47 | 0.42 | 1.48 | 1.45 | 1.48 | |||||||||||||
1981 | 0.68 | 1.78 | 0.92 | 0.96 | 1.10 | 1.00 | 0.64 | 0.86 | 0.87 | 1.76 | 1.31 | 1.38 | 1.78 | |||||||||||||
1982 | 1.15 | g | 1.52 | 0.87 | 0.53 | a | 0.76 | 0.83 | 0.97 | 0.61 | 0.81 | 1.74 | 1.02 | ----- | z | ----- | z | |||||||||
1983 | 2.24 | 0.74 | 0.96 | 0.65 | 0.96 | 1.01 | 1.70 | 0.56 | 0.80 | 0.92 | 1.77 | 1.23 | a | 2.24 | a | |||||||||||
1984 | 2.59 | 1.44 | 0.91 | 0.60 | 1.16 | 1.80 | 0.02 | 0.54 | 0.87 | 1.40 | 0.97 | 1.01 | 2.59 | |||||||||||||
1985 | 0.72 | 0.60 | 0.55 | 0.87 | 0.87 | 1.97 | 0.08 | 0.98 | 0.87 | 1.90 | 1.45 | 0.37 | 1.97 | |||||||||||||
1986 | 1.46 | 1.70 | 1.07 | 0.70 | 0.98 | 0.82 | 0.78 | 0.28 | 1.02 | 0.83 | 4.67 | 0.73 | 4.67 | |||||||||||||
1987 | 0.80 | 2.27 | 0.84 | a | 1.58 | 1.32 | 0.57 | 0.76 | 0.39 | 0.71 | 0.19 | 1.36 | 1.81 | 2.27 | a | |||||||||||
1988 | 1.28 | 0.56 | 1.42 | 1.08 | 0.81 | 0.48 | 1.02 | 0.64 | 0.99 | 1.52 | 1.46 | 1.42 | 1.52 | |||||||||||||
1989 | 0.82 | 0.51 | 0.73 | 0.96 | 1.04 | 1.01 | 0.35 | 0.81 | 0.57 | 0.46 | 2.63 | 1.67 | 2.63 | |||||||||||||
1990 | 2.52 | 1.63 | 0.65 | 1.48 | 1.32 | 1.18 | 0.94 | 1.20 | 0.21 | 1.08 | 2.01 | 0.74 | 2.52 | |||||||||||||
1991 | 0.26 | 2.91 | 1.03 | 2.51 | 0.83 | 0.64 | 0.54 | 0.77 | 0.75 | 0.46 | 1.75 | 0.65 | 2.91 | |||||||||||||
1992 | 1.41 | b | 0.79 | 0.67 | 0.99 | 0.99 | 1.07 | 1.49 | 1.30 | 1.72 | 0.96 | a | 2.23 | d | 1.27 | 2.23 | g | |||||||||
1993 | 1.80 | a | 0.17 | 2.17 | 1.04 | d | 1.15 | a | 0.98 | 1.32 | 0.42 | 0.05 | 0.94 | 0.97 | 0.99 | 2.17 | f | |||||||||
1994 | 1.08 | b | 1.05 | c | 1.81 | 0.76 | 0.65 | a | 1.25 | 0.40 | 0.22 | 0.56 | 2.03 | 1.94 | d | 2.02 | c | 2.03 | m | |||||||
1995 | 1.05 | 1.98 | b | 0.80 | a | 0.52 | 0.80 | 0.71 | 0.75 | 1.02 | 0.58 | 1.77 | d | 1.88 | b | 1.79 | b | 1.98 | k | |||||||
1996 | 2.44 | d | 2.84 | a | 0.88 | 0.90 | d | 1.56 | e | 0.95 | b | 0.52 | 0.32 | 1.67 | a | 1.70 | d | 1.61 | c | 2.61 | c | ----- | z | |||
1997 | 2.13 | c | 1.18 | 1.13 | c | 1.56 | 1.24 | a | 1.89 | b | 1.26 | 0.63 | a | 0.71 | b | 1.89 | a | 0.95 | 1.45 | c | 2.13 | p | ||||
1998 | 1.39 | a | 0.40 | 1.32 | 0.45 | 1.78 | 0.42 | 0.56 | 0.12 | 0.27 | 1.10 | 2.80 | 1.52 | 2.80 | a | |||||||||||
1999 | 0.70 | 0.74 | 0.80 | 0.41 | 0.72 | 1.10 | 1.28 | 0.51 | b | 0.27 | 0.87 | 2.50 | 1.06 | 2.50 | b | |||||||||||
2000 | 0.74 | 1.28 | 0.93 | ----- | z | 0.63 | 0.98 | 0.83 | 0.45 | 0.85 | 0.93 | 0.75 | 0.82 | ----- | z | |||||||||||
2001 | 0.57 | 0.95 | 0.83 | 1.10 | 1.04 | 1.28 | 0.52 | 1.33 | 0.86 | 0.95 | 1.86 | 1.54 | a | 1.86 | a | |||||||||||
2002 | 1.96 | e | 0.94 | e | 2.36 | c | 1.85 | 0.68 | 1.48 | 0.47 | 0.34 | 0.51 | 1.06 | 0.35 | 0.98 | c | 2.36 | p | ||||||||
2003 | 1.58 | e | 1.61 | e | 1.21 | e | 1.05 | 0.65 | 0.26 | 0.57 | 0.08 | 0.48 | 2.41 | 1.50 | 1.26 | f | 2.41 | u | ||||||||
2004 | 1.28 | f | 0.60 | c | 0.66 | d | 0.34 | 1.28 | 0.82 | 0.09 | 1.87 | 1.50 | a | 2.20 | d | 0.97 | c | 0.90 | e | ----- | z | |||||
2005 | 3.45 | e | 0.70 | e | 2.68 | b | 0.75 | 1.17 | 1.10 | 1.00 | 0.37 | 2.50 | 1.13 | 1.32 | 1.77 | 3.45 | l | |||||||||
2006 | 2.32 | 0.68 | 0.87 | 0.83 | 1.99 | 0.83 | 0.36 | 0.19 | 0.98 | 1.01 | 2.75 | 1.35 | 2.75 | |||||||||||||
2007 | 2.44 | 1.85 | 3.08 | 0.48 | 1.36 | 0.75 | 0.83 | 0.93 | 1.15 | 1.00 | b | 1.05 | 2.34 | 3.08 | b | |||||||||||
2008 | 1.80 | 2.51 | 1.11 | 0.73 | 0.89 | 0.73 | 0.62 | 0.77 | 1.20 | 0.78 | a | 2.45 | 2.31 | 2.51 | a | |||||||||||
2009 | 2.25 | 0.36 | 1.27 | 1.24 | 0.93 | 0.33 | d | 0.02 | d | 0.62 | 1.53 | 1.48 | 1.36 | j | 1.49 | i | ----- | z | ||||||||
2010 | 1.28 | l | 1.29 | i | 0.62 | h | 1.41 | h | 0.91 | k | 1.89 | h | 0.89 | j | 0.26 | i | 1.07 | i | 1.67 | k | 1.46 | j | 2.07 | i | ----- | z |
2011 | 3.30 | g | 0.82 | e | 1.48 | d | 2.75 | d | 2.29 | f | 1.62 | d | 0.55 | f | 0.22 | d | 1.25 | e | 1.22 | f | 2.03 | e | 1.17 | e | ----- | z |
2012 | 1.80 | g | 2.06 | e | 1.38 | d | 1.58 | e | 0.97 | e | 1.20 | d | 0.62 | f | 0.06 | d | 0.33 | f | 2.56 | e | 1.12 | e | 1.64 | g | ----- | z |
2013 | 1.41 | e | 0.48 | e | 1.07 | e | 2.60 | d | 1.76 | e | 0.78 | e | 0.09 | d | 0.84 | d | 3.59 | e | 1.39 | e | 1.10 | e | 1.60 | e | ----- | z |
2014 | 1.69 | e | 3.10 | e | 3.00 | e | 0.97 | d | 1.24 | e | 0.96 | e | 1.36 | e | 1.31 | e | 0.87 | e | 1.43 | e | 1.60 | e | 1.88 | f | ----- | z |
2015 | 1.93 | e | 1.28 | e | 2.61 | e | 0.71 | d | 0.48 | f | 0.51 | d | 0.74 | e | 1.34 | d | 0.40 | e | 1.21 | e | 4.95 | e | 2.65 | e | ----- | z |
2016 | 0.98 | g | 2.23 | e | 0.70 | d | 0.72 | d | 0.74 | f | 0.75 | d | 1.42 | e | 0.45 | d | 1.12 | e | 1.50 | f | 1.57 | e | 1.73 | e | ----- | z |
2017 | 1.42 | g | 1.70 | e | 1.80 | d | 0.72 | e | 0.91 | e | 0.97 | d | 0.04 | e | 0.22 | d | 0.66 | d | 3.84 | f | 2.13 | e | 1.49 | f | ----- | z |
2018 | 0.78 | f | 1.31 | e | 0.80 | d | 1.70 | e | 1.13 | e | 0.90 | d | 0.17 | e | 1.14 | d | 0.77 | f | 2.45 | e | 0.94 | e | 1.60 | g | ----- | z |
2019 | 1.40 | e | 1.37 | f | 1.02 | e | 1.80 | d | 0.90 | e | 0.50 | e | 0.62 | d | 0.58 | d | 1.74 | f | 2.18 | f | 0.64 | e | 2.00 | f | ----- | z |
2020 | 1.57 | e | 2.19 | e | 0.92 | e | 0.96 | a | 1.05 | f | 1.20 | e | 0.52 | d | 0.60 | e | 1.82 | c | 1.13 | b | 1.78 | d | 1.43 | e | ----- | z |
2021 | 1.43 | b | 1.87 | e | 0.75 | b | 0.64 | 1.99 | e | 1.63 | d | 0.12 | f | 0.28 | g | 1.75 | e | 2.01 | g | 2.10 | d | 1.55 | g | ----- | z | |
2022 | 1.58 | g | 2.10 | e | 3.77 | d | 0.91 | f | 1.71 | f | 2.11 | e | 0.60 | f | 0.02 | e | 0.04 | e | 1.32 | f | 3.00 | e | 1.56 | f | ----- | z |
2023 | 0.61 | g | 1.10 | f | 0.65 | d | 2.12 | e | 1.17 | e | 0.86 | e | 0.32 | h | 0.09 | f | 0.90 | e | 1.14 | f | 2.02 | f | 2.92 | f | ----- | z |
2024 | 1.35 | f | 1.37 | m | 0.70 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.37 | 1.28 | 1.13 | 0.98 | 0.97 | 1.03 | 0.65 | 0.73 | 1.01 | 1.24 | 1.50 | 1.42 | 2.21 | |||||||||||||
S.D. | 0.72 | 0.65 | 0.66 | 0.48 | 0.39 | 0.50 | 0.43 | 0.53 | 0.56 | 0.50 | 0.82 | 0.53 | 0.63 | |||||||||||||
SKEW | 0.75 | 0.71 | 1.83 | 1.65 | 1.33 | 0.98 | 0.50 | 1.95 | 1.38 | 0.53 | 1.80 | 0.71 | 1.17 | |||||||||||||
MAX | 3.46 | 3.10 | 3.77 | 2.75 | 2.55 | 2.55 | 1.70 | 3.39 | 3.59 | 2.56 | 4.95 | 3.14 | 4.67 | |||||||||||||
MIN | 0.26 | 0.17 | 0.22 | 0.31 | 0.28 | 0.22 | 0.00 | 0.02 | 0.04 | 0.19 | 0.28 | 0.37 | 1.25 | |||||||||||||
YRS | 74 | 82 | 84 | 82 | 79 | 84 | 79 | 82 | 81 | 77 | 82 | 73 | 57 |