YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | 0.68 | 0.20 | 1.48 | 0.13 | 0.15 | 0.53 | 0.33 | 1.26 | 1.66 | ----- | z | |||||||||
1938 | 0.70 | o | 0.56 | 0.85 | 0.53 | 0.12 | 0.29 | 0.50 | 0.01 | 0.26 | 0.42 | 1.63 | a | 0.36 | 1.63 | p | ||||||||||
1939 | 0.83 | 1.10 | p | 0.22 | 0.22 | 0.72 | 0.20 | 0.04 | 0.15 | 0.25 | 0.51 | 0.84 | 0.80 | 1.10 | p | |||||||||||
1940 | 0.64 | 0.46 | 0.35 | r | 1.36 | s | 0.36 | 0.04 | 0.42 | 0.00 | 1.47 | 0.49 | 1.20 | ----- | z | ----- | z | |||||||||
1941 | ----- | z | 0.18 | w | 0.30 | 0.36 | 0.65 | 0.27 | 0.25 | 0.30 | 0.60 | 0.28 | 0.92 | 0.89 | ----- | z | ||||||||||
1942 | 0.51 | 0.50 | 0.57 | 0.20 | 0.82 | 0.34 | 0.26 | 0.07 | 0.00 | 3.05 | 1.10 | 0.94 | 3.05 | |||||||||||||
1943 | 1.50 | 0.94 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.13 | 0.00 | 0.60 | 1.06 | 2.10 | ----- | z | ||||||||
1944 | 0.55 | t | 0.75 | 0.41 | 0.48 | 0.98 | 0.78 | 0.06 | 0.05 | 0.80 | 0.22 | 0.80 | 0.90 | 0.98 | t | |||||||||||
1945 | 0.90 | 1.60 | 0.65 | 0.15 | 0.40 | 0.05 | 0.00 | 0.26 | 0.42 | 0.48 | 1.25 | 1.80 | 1.80 | |||||||||||||
1946 | 1.50 | 1.46 | 0.37 | 0.20 | 0.13 | 2.08 | 0.07 | 0.20 | 0.34 | 0.60 | 2.08 | 2.90 | a | 2.90 | a | |||||||||||
1947 | ----- | z | 1.44 | 0.21 | 0.24 | 0.06 | ----- | z | ----- | z | 0.09 | 0.33 | 1.09 | 0.53 | 0.92 | ----- | z | |||||||||
1948 | 0.91 | 1.20 | 0.82 | u | 0.30 | 1.05 | 0.90 | 0.51 | 0.37 | 0.92 | 0.51 | 0.84 | 1.90 | 1.90 | u | |||||||||||
1949 | 0.20 | 1.20 | 0.41 | 0.10 | 0.23 | 0.13 | 0.00 | 0.12 | 0.52 | 1.14 | 1.37 | 1.81 | 1.81 | |||||||||||||
1950 | 1.20 | 1.20 | k | 0.41 | 0.45 | 0.15 | 0.26 | 0.00 | 0.15 | 0.35 | 0.30 | g | 1.61 | q | 0.45 | ----- | z | |||||||||
1951 | 1.37 | b | 2.20 | 0.22 | g | ----- | z | ----- | z | 0.45 | 0.30 | 0.86 | 0.35 | 0.85 | ----- | z | ----- | z | ----- | z | ||||||
1952 | ----- | z | 1.24 | d | 0.22 | a | 0.00 | 0.00 | d | 0.65 | 0.00 | 0.40 | 0.34 | 0.00 | 0.28 | b | 0.71 | a | ----- | z | ||||||
1953 | 1.83 | 1.08 | 0.20 | 0.61 | 0.55 | 0.51 | 0.00 | 0.33 | 0.16 | 0.31 | 0.96 | 2.02 | 2.02 | |||||||||||||
1954 | 1.47 | d | 1.52 | a | 0.61 | 0.58 | d | 0.12 | 0.79 | a | 0.47 | 0.55 | 0.89 | 1.95 | 1.82 | 1.27 | a | 1.95 | k | |||||||
1955 | 0.26 | 2.26 | 0.90 | 0.71 | 0.17 | b | 0.16 | 0.28 | 0.00 | 0.18 | 1.37 | 1.84 | b | 2.06 | a | 2.26 | e | |||||||||
1956 | 1.25 | b | 0.51 | 1.47 | 0.00 | 0.00 | g | 0.75 | 0.40 | 0.63 | 0.82 | 0.85 | 1.00 | 1.62 | 1.62 | i | ||||||||||
1957 | 0.56 | 1.50 | 1.70 | f | 0.87 | m | 0.37 | 0.33 | 0.05 | 0.30 | 0.39 | 0.98 | b | 0.44 | 3.04 | h | ----- | z | ||||||||
1958 | 0.86 | e | 0.46 | d | 0.24 | 1.22 | c | 0.24 | 0.30 | 0.20 | ----- | z | ----- | z | ----- | z | 1.64 | c | 1.97 | l | ----- | z | ||||
1959 | 0.89 | c | 1.24 | c | 0.57 | 0.32 | 0.21 | 0.19 | 0.00 | 0.00 | 0.60 | 1.40 | 2.57 | 2.12 | 2.57 | f | ||||||||||
1960 | 1.54 | s | 1.23 | b | 0.73 | i | ----- | z | 0.82 | 0.00 | 0.00 | ----- | z | 0.21 | 0.78 | h | 1.86 | d | 0.80 | b | ----- | z | ||||
1961 | 1.04 | 2.71 | s | 1.43 | s | 0.25 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
1962 | ----- | z | 0.26 | a | ----- | z | 1.26 | a | 0.45 | 0.22 | 0.30 | ----- | z | 0.29 | ----- | z | 2.48 | 0.60 | ----- | z | ||||||
1963 | 0.40 | 1.90 | 1.12 | 0.67 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.47 | i | 0.35 | j | ----- | z | ||||
1964 | 2.41 | 0.46 | 0.61 | d | 0.60 | 0.11 | 0.43 | 0.13 | 0.49 | 0.50 | 0.72 | 0.93 | 2.99 | b | 2.99 | f | ||||||||||
1965 | 2.24 | 0.87 | 0.24 | 0.78 | 0.32 | 0.60 | 0.36 | 0.22 | 0.29 | 0.23 | 0.33 | 0.91 | n | 2.24 | n | |||||||||||
1966 | 1.08 | j | 0.65 | 0.60 | 0.04 | 0.52 | 0.65 | 0.50 | 0.00 | 0.14 | 0.50 | 0.62 | 1.16 | 1.16 | j | |||||||||||
1967 | 2.24 | 0.89 | 0.64 | 0.73 | 0.45 | 0.39 | 0.00 | 0.00 | 0.09 | 3.36 | f | ----- | z | ----- | z | ----- | z | |||||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | 0.51 | 0.15 | 0.00 | 0.61 | 0.27 | 0.37 | 1.00 | 1.54 | ----- | z | ||||||||
1969 | 0.91 | 0.40 | o | 0.20 | 0.45 | 0.14 | 0.14 | 0.04 | 0.00 | 0.54 | 0.39 | 0.43 | 0.90 | 0.91 | o | |||||||||||
1970 | 0.99 | 0.60 | 0.45 | 0.44 | 0.11 | 0.05 | 0.01 | 0.03 | 0.21 | 0.37 | 1.14 | 2.41 | m | 2.41 | m | |||||||||||
1971 | 1.89 | 0.56 | 0.73 | 0.45 | 0.20 | 0.17 | 0.11 | 0.31 | 0.48 | 0.65 | 0.90 | 1.52 | 1.89 | |||||||||||||
1972 | 2.60 | 2.28 | 2.76 | 0.55 | 0.60 | 1.25 | 0.17 | 0.41 | 0.55 | 0.10 | 0.57 | 1.02 | 2.76 | |||||||||||||
1973 | 0.94 | 0.21 | 0.48 | 0.12 | 0.31 | 0.12 | 0.23 | 0.02 | 0.46 | 0.95 | 1.26 | 1.22 | 1.26 | |||||||||||||
1974 | 2.45 | 0.50 | 1.00 | 0.54 | 0.43 | 0.45 | 1.15 | 0.00 | 0.08 | 0.21 | 0.85 | 1.38 | 2.45 | |||||||||||||
1975 | 1.33 | 1.15 | 0.37 | 0.33 | 0.98 | 0.33 | 0.15 | 1.10 | 0.00 | 0.70 | 1.66 | 2.00 | 2.00 | |||||||||||||
1976 | 0.97 | 1.50 | 0.90 | 0.30 | 0.12 | 0.07 | 0.25 | 0.89 | 0.05 | 0.82 | 0.20 | 0.77 | 1.50 | |||||||||||||
1977 | 0.35 | 0.71 | 0.71 | 0.09 | 0.38 | 0.21 | 0.07 | 0.25 | 0.50 | 0.25 | 1.40 | 2.10 | 2.10 | |||||||||||||
1978 | 0.37 | 0.48 | 0.48 | 0.47 | 0.20 | 0.31 | 0.32 | 0.40 | 0.42 | 0.12 | 0.64 | 0.73 | 0.73 | |||||||||||||
1979 | 0.75 | 1.46 | 0.60 | 0.20 | 0.15 | 0.32 | 0.33 | 0.22 | 0.48 | 0.34 | 0.43 | 1.83 | 1.83 | |||||||||||||
1980 | 1.56 | 0.78 | 0.72 | 0.62 | b | 0.38 | 0.82 | 0.02 | 0.37 | 0.34 | 0.12 | 1.24 | 1.35 | 1.56 | b | |||||||||||
1981 | 0.33 | 1.00 | 0.22 | 0.35 | 0.51 | 0.48 | 0.14 | 0.19 | 0.41 | 0.52 | 0.89 | 1.73 | 1.73 | |||||||||||||
1982 | 2.23 | 1.07 | a | 0.70 | 0.35 | 0.22 | 0.41 | 0.58 | 0.11 | 0.30 | 0.55 | 0.46 | 1.95 | 2.23 | a | |||||||||||
1983 | 1.33 | 0.54 | 0.52 | 0.67 | 0.37 | 0.20 | 0.44 | 0.81 | 0.87 | 0.21 | 1.01 | 0.57 | a | 1.33 | a | |||||||||||
1984 | 0.70 | 0.50 | a | 0.67 | 0.33 | 0.30 | 1.19 | 0.00 | 0.25 | 0.62 | 0.49 | 0.70 | 0.82 | 1.19 | a | |||||||||||
1985 | 0.30 | b | 0.82 | 0.48 | 0.47 | 0.17 | 0.51 | 0.43 | 0.08 | 0.28 | 0.94 | 0.65 | 0.59 | 0.94 | b | |||||||||||
1986 | 1.40 | 1.16 | 0.35 | 0.43 | 0.48 | 0.49 | 0.08 | 0.80 | 0.48 | 0.45 | 2.38 | 0.60 | 2.38 | |||||||||||||
1987 | 0.56 | 1.62 | 0.70 | 0.30 | 0.38 | 0.33 | 0.18 | 0.02 | 0.04 | 0.03 | 0.24 | 2.37 | 2.37 | |||||||||||||
1988 | 0.97 | 0.43 | 0.56 | a | 0.56 | 0.35 | 0.73 | 0.05 | 0.10 | 0.40 | 1.46 | 1.18 | 0.70 | 1.46 | a | |||||||||||
1989 | 0.58 | 0.49 | 0.47 | 1.22 | 1.07 | 0.23 | 0.23 | 0.38 | 0.22 | 1.37 | 0.85 | 1.23 | 1.37 | |||||||||||||
1990 | 2.20 | 1.50 | 0.38 | 0.65 | 0.80 | 0.31 | 0.24 | 1.42 | 0.07 | 1.26 | 2.25 | 0.78 | 2.25 | |||||||||||||
1991 | 0.57 | 2.20 | 0.58 | 0.60 | 0.72 | 0.63 | 1.08 | 0.22 | 0.12 | 0.75 | 0.59 | 0.86 | 2.20 | |||||||||||||
1992 | 1.03 | 0.50 | 0.25 | 0.68 | 0.01 | 1.36 | 0.25 | 0.04 | 0.30 | 0.43 | 0.94 | 0.57 | 1.36 | |||||||||||||
1993 | 0.78 | 0.18 | 0.50 | 0.25 | 0.62 | 0.59 | 0.28 | 0.14 | 0.11 | 0.32 | 0.25 | 1.27 | 1.27 | |||||||||||||
1994 | 0.55 | 1.32 | 0.46 | 0.37 | 0.43 | 0.43 | 0.00 | 0.35 | 0.15 | 2.15 | 0.86 | 1.07 | 2.15 | |||||||||||||
1995 | 0.86 | 1.15 | 0.50 | 0.37 | 0.65 | 0.56 | 0.68 | 0.86 | 0.26 | 1.00 | 2.25 | 0.94 | 2.25 | |||||||||||||
1996 | 1.06 | 2.03 | 0.33 | a | 0.83 | 0.35 | 0.15 | 0.37 | 0.00 | 0.33 | 1.18 | 1.16 | 3.33 | 3.33 | a | |||||||||||
1997 | 0.84 | a | 0.69 | 0.85 | 0.70 | 0.33 | 0.49 | 0.13 | 0.33 | 0.35 | 1.53 | 0.47 | 0.70 | 1.53 | a | |||||||||||
1998 | 0.95 | 0.42 | 0.41 | 0.50 | 0.92 | 1.05 | 0.55 | 0.05 | 0.00 | 0.12 | 1.62 | 1.70 | 1.70 | |||||||||||||
1999 | 1.35 | a | 1.13 | 0.36 | 0.04 | a | 0.22 | 0.27 | 0.03 | 0.40 | 0.34 | 0.61 | 1.36 | 0.98 | 1.36 | b | ||||||||||
2000 | 0.79 | 1.65 | 0.35 | 0.20 | 0.14 | 0.38 | 0.12 | 0.02 | 0.50 | 0.38 | 0.47 | 0.84 | 1.65 | |||||||||||||
2001 | 0.43 | 0.60 | 0.38 | 0.40 | 0.22 | 0.50 | 0.06 | 2.00 | 0.35 | 1.10 | 1.15 | 1.09 | 2.00 | |||||||||||||
2002 | 0.70 | 0.70 | 1.17 | b | 0.71 | 0.50 | 0.17 | 0.38 | 0.04 | 0.11 | 0.06 | 0.50 | 0.91 | 1.17 | b | |||||||||||
2003 | 1.75 | 0.88 | 1.62 | 0.88 | 0.06 | a | 0.05 | 0.00 | 0.03 | 0.00 | 1.21 | 2.17 | a | 0.69 | a | 2.17 | c | |||||||||
2004 | 0.70 | 0.35 | 0.46 | 0.43 | 0.45 | 0.35 | 0.32 | 0.59 | 0.45 | 0.80 | 0.63 | 1.37 | 1.37 | |||||||||||||
2005 | 1.01 | 0.45 | a | 0.72 | 0.23 | 0.88 | 0.30 | 0.25 | 0.05 | 0.29 | 1.25 | 0.73 | 0.72 | 1.25 | a | |||||||||||
2006 | 1.13 | 0.83 | 0.41 | 0.46 | 0.40 | 0.57 | 0.13 | 0.00 | 0.23 | 0.28 | 3.78 | 1.49 | 3.78 | |||||||||||||
2007 | 1.60 | b | 0.41 | 0.36 | 0.45 | 0.84 | 0.13 | 0.17 | 0.06 | 0.33 | 0.60 | 0.61 | 3.00 | 3.00 | b | |||||||||||
2008 | 0.64 | 1.35 | 0.26 | 0.16 | 0.17 | 0.22 | 0.00 | 0.25 | 0.08 | 0.80 | 4.12 | 0.91 | 4.12 | |||||||||||||
2009 | 4.14 | 0.35 | 0.60 | 0.52 | 0.61 | 0.32 | 0.30 | 0.03 | 0.33 | 0.69 | 0.59 | 0.63 | a | 4.14 | a | |||||||||||
2010 | 0.64 | 0.47 | 0.25 | 0.43 | 0.79 | 0.34 | 2.55 | 0.15 | 0.34 | 0.41 | 0.73 | 1.48 | 2.55 | |||||||||||||
2011 | 1.68 | 1.01 | e | 1.15 | 0.29 | 0.48 | 0.42 | 0.26 | 0.00 | 0.18 | 0.42 | 0.81 | 1.40 | 1.68 | e | |||||||||||
2012 | 1.01 | i | 1.83 | b | 0.67 | 0.63 | 0.11 | 0.33 | i | 0.22 | a | 0.00 | d | 0.00 | b | 0.74 | a | 0.80 | b | 1.44 | ----- | z | ||||
2013 | 0.57 | a | 0.59 | a | 0.58 | b | 0.37 | 0.43 | a | 0.21 | a | 0.14 | 0.40 | b | 1.25 | 0.32 | 0.73 | b | 1.80 | a | 1.80 | k | ||||
2014 | 0.57 | 1.36 | 0.57 | 0.25 | a | 0.14 | 0.04 | b | 0.39 | 0.62 | c | 0.20 | 0.40 | a | 0.72 | c | 1.67 | c | 1.67 | m | ||||||
2015 | 0.99 | 0.33 | 0.75 | a | 0.27 | 0.33 | a | 0.13 | d | 0.56 | a | 0.19 | b | 0.18 | b | 1.65 | a | 2.01 | b | 2.10 | d | 2.10 | r | |||
2016 | 0.74 | a | 0.54 | 1.01 | a | 0.74 | 0.40 | a | 0.30 | 0.25 | 0.22 | 0.08 | 0.85 | 0.47 | b | 0.48 | 1.01 | e | ||||||||
2017 | 0.42 | 1.06 | 0.55 | 0.53 | a | 0.33 | 0.20 | 0.00 | 0.00 | a | 0.10 | 2.25 | 1.07 | a | 0.83 | c | 2.25 | f | ||||||||
2018 | 0.81 | 0.60 | a | 0.55 | 0.59 | a | 0.41 | 0.26 | a | 0.11 | b | 0.02 | 0.09 | a | 0.70 | a | 0.60 | 0.94 | a | 0.94 | h | |||||
2019 | 0.84 | a | 0.83 | 0.23 | 0.38 | a | 1.21 | b | 0.39 | 0.21 | 0.62 | 0.28 | b | 0.56 | 0.30 | 1.33 | a | 1.33 | g | |||||||
2020 | 1.09 | b | 0.96 | 0.20 | 0.16 | 0.45 | 0.25 | a | 0.00 | 0.03 | a | 0.49 | 1.08 | b | 0.80 | d | 0.45 | 1.09 | j | |||||||
2021 | 1.30 | 1.06 | 0.63 | 0.10 | 0.13 | a | 0.26 | a | 0.03 | b | 0.29 | 0.16 | 0.51 | a | 1.12 | b | 1.03 | a | 1.30 | h | ||||||
2022 | 1.73 | g | 1.09 | 0.54 | 0.62 | 0.26 | 0.52 | a | 0.05 | b | 0.00 | 0.04 | 0.17 | c | 2.15 | 0.91 | a | 2.15 | n | |||||||
2023 | 0.63 | d | 0.46 | b | 0.32 | 0.25 | b | 0.57 | f | 0.48 | a | 0.00 | c | 0.18 | c | 0.35 | e | 0.46 | a | 0.75 | 1.38 | a | ----- | z | ||
2024 | 0.72 | 0.41 | 0.32 | 0.13 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.09 | 0.96 | 0.58 | 0.44 | 0.41 | 0.42 | 0.24 | 0.28 | 0.34 | 0.72 | 1.11 | 1.29 | 2.03 | |||||||||||||
S.D. | 0.67 | 0.53 | 0.38 | 0.26 | 0.28 | 0.35 | 0.34 | 0.34 | 0.27 | 0.55 | 0.73 | 0.65 | 0.79 | |||||||||||||
SKEW | 1.74 | 0.76 | 2.97 | 0.85 | 0.86 | 2.10 | 4.23 | 2.35 | 1.60 | 1.63 | 1.72 | 1.02 | 0.98 | |||||||||||||
MAX | 4.14 | 2.28 | 2.76 | 1.26 | 1.21 | 2.08 | 2.55 | 2.00 | 1.47 | 3.05 | 4.12 | 3.33 | 4.14 | |||||||||||||
MIN | 0.20 | 0.18 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.36 | 0.73 | |||||||||||||
YRS | 76 | 81 | 78 | 81 | 81 | 82 | 84 | 82 | 84 | 80 | 82 | 78 | 45 |