YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.62 | 0.38 | 0.00 | 0.75 | 0.20 | 0.36 | 2.28 | ----- | z | |||||||
1938 | 0.34 | 1.07 | 1.00 | 0.25 | 0.65 | 1.17 | 0.75 | 0.45 | 0.21 | 0.70 | 0.57 | 0.35 | 1.17 | |||||||||||||
1939 | 0.96 | 0.60 | 0.17 | 0.23 | 0.60 | 0.27 | 0.30 | 0.34 | 0.70 | 0.33 | 0.02 | 0.38 | 0.96 | |||||||||||||
1940 | 0.53 | 0.98 | a | 1.15 | 0.53 | 0.02 | 0.31 | 0.07 | 0.35 | 0.70 | 0.47 | 0.47 | 0.57 | 1.15 | a | |||||||||||
1941 | 0.55 | 0.50 | 0.50 | 0.60 | 0.75 | 0.65 | 0.23 | 0.90 | 0.24 | 0.37 | 0.35 | 1.83 | 1.83 | |||||||||||||
1942 | 0.58 | a | 0.53 | 0.18 | 0.25 | 0.48 | j | 0.28 | 0.16 | 0.04 | 0.00 | 0.20 | 0.99 | 0.79 | 0.99 | k | ||||||||||
1943 | 1.76 | 0.69 | 0.65 | 0.95 | 0.28 | 0.78 | 0.10 | 0.04 | 0.28 | 0.80 | ----- | z | 0.23 | ----- | z | |||||||||||
1944 | 0.35 | 1.02 | 0.90 | 0.45 | 0.43 | 0.93 | 0.48 | 0.16 | 0.15 | 0.53 | 0.75 | 0.23 | 1.02 | |||||||||||||
1945 | 0.52 | 1.45 | 0.63 | 0.21 | 0.71 | 0.68 | 0.26 | a | 0.51 | 0.39 | 0.48 | 1.05 | 0.76 | 1.45 | a | |||||||||||
1946 | 0.88 | 0.90 | a | 0.43 | 0.08 | 0.56 | 0.13 | 0.13 | 0.41 | 0.27 | 0.85 | 1.40 | 0.54 | 1.40 | a | |||||||||||
1947 | 0.45 | a | 0.48 | a | 0.42 | 0.06 | y | 0.39 | 0.52 | 0.25 | 0.13 | 0.15 | 1.12 | 0.04 | 0.18 | ----- | z | |||||||||
1948 | 0.89 | 0.40 | 0.30 | a | 0.47 | 0.38 | s | 0.40 | 0.07 | 0.15 | 0.95 | 0.15 | 0.80 | 0.80 | 0.95 | t | ||||||||||
1949 | 0.12 | 0.70 | 0.22 | 0.08 | 1.05 | 0.31 | 0.01 | 0.12 | 0.25 | 0.32 | 0.66 | 0.40 | 1.05 | |||||||||||||
1950 | 0.67 | 1.02 | 0.57 | 0.17 | 0.17 | 0.06 | 0.96 | 0.98 | 1.43 | 0.59 | 0.58 | 0.38 | 1.43 | |||||||||||||
1951 | 0.78 | 0.60 | 0.27 | 1.10 | 0.35 | 0.28 | 0.50 | 0.68 | 0.01 | 0.55 | 0.50 | 0.90 | 1.10 | |||||||||||||
1952 | 0.80 | 0.85 | 0.61 | 0.33 | 0.60 | 0.87 | 0.10 | 0.65 | 0.12 | 0.00 | 0.70 | 1.33 | 1.33 | |||||||||||||
1953 | 0.75 | 0.19 | 0.45 | 0.45 | 0.55 | 0.52 | 0.00 | 0.04 | 0.14 | 0.03 | d | 0.60 | 0.36 | 0.75 | d | |||||||||||
1954 | 0.75 | 1.15 | 0.48 | 0.08 | 0.50 | f | 1.25 | 0.50 | 0.17 | 0.08 | 0.00 | 0.78 | 0.45 | 1.25 | f | |||||||||||
1955 | 0.36 | 0.25 | 0.30 | 0.18 | 0.80 | 0.49 | 0.15 | 0.00 | 0.18 | a | 0.45 | 0.60 | 2.00 | 2.00 | a | |||||||||||
1956 | 0.60 | a | 1.08 | 0.15 | 0.30 | 0.51 | 0.12 | 0.30 | 0.06 | 0.08 | 1.00 | 0.30 | 0.32 | 1.08 | a | |||||||||||
1957 | 0.70 | 0.65 | 0.30 | 0.48 | 1.15 | 0.33 | 0.20 | 0.75 | 0.10 | 0.67 | 0.25 | 0.45 | 1.15 | |||||||||||||
1958 | 0.45 | 1.38 | 0.80 | 1.05 | 1.29 | 0.80 | 1.50 | 0.16 | 0.50 | 0.08 | 0.45 | 0.20 | 1.50 | |||||||||||||
1959 | 0.60 | 1.50 | 0.29 | 0.12 | 0.62 | 0.22 | 0.04 | 0.28 | 0.95 | 0.35 | 0.00 | 2.01 | 2.01 | |||||||||||||
1960 | 0.50 | 1.03 | 0.60 | 0.14 | 0.22 | 0.20 | 0.05 | 0.29 | 0.21 | 0.68 | 1.20 | 0.20 | 1.20 | |||||||||||||
1961 | 0.23 | 0.60 | 0.21 | 0.54 | 0.93 | 0.25 | 0.27 | 0.85 | 0.75 | 0.63 | 0.54 | 0.62 | 0.93 | |||||||||||||
1962 | 0.65 | 1.00 | 0.25 | 0.75 | 0.75 | 0.75 | 0.29 | 0.25 | 0.27 | 0.19 | 0.50 | 0.57 | 1.00 | |||||||||||||
1963 | 0.95 | 1.30 | 0.75 | 0.55 | 0.75 | 1.29 | 0.15 | 0.50 | 0.34 | 0.16 | 0.82 | 0.30 | 1.30 | |||||||||||||
1964 | 0.78 | 0.10 | 0.70 | 0.47 | 0.68 | 0.68 | 0.66 | 0.12 | 0.10 | 0.20 | 0.58 | 2.16 | 2.16 | |||||||||||||
1965 | 1.02 | 0.37 | 0.24 | 0.42 | 0.38 | 0.40 | 0.76 | 0.84 | 0.83 | 0.02 | 0.45 | 0.38 | 1.02 | |||||||||||||
1966 | 0.71 | 0.40 | 0.32 | 0.25 | 0.29 | 0.54 | 0.10 | 0.09 | 0.87 | 0.08 | 0.95 | 1.00 | 1.00 | |||||||||||||
1967 | 0.80 | 0.11 | 0.50 | 0.88 | 0.14 | 1.15 | 0.34 | 0.25 | 0.48 | 0.77 | 0.77 | 0.40 | 1.15 | |||||||||||||
1968 | 0.87 | 0.20 | 0.15 | 0.25 | 0.45 | 0.64 | 0.27 | 1.22 | 0.58 | 0.59 | 0.46 | 0.60 | 1.22 | |||||||||||||
1969 | 1.06 | 1.02 | 0.13 | 0.42 | 0.08 | 0.95 | 0.57 | 0.01 | 0.50 | 0.11 | 0.19 | 0.87 | 1.06 | |||||||||||||
1970 | 0.81 | 0.19 | 1.38 | 0.25 | 0.30 | 0.83 | 1.08 | 0.20 | 0.32 | 0.55 | 1.34 | 1.05 | 1.38 | |||||||||||||
1971 | 0.73 | 0.22 | 0.80 | 0.10 | 0.34 | 0.58 | 0.15 | 0.20 | 0.30 | 0.44 | 0.13 | 0.60 | 0.80 | |||||||||||||
1972 | 0.72 | 0.37 | 0.49 | 0.26 | 0.30 | 0.50 | 0.19 | 0.29 | 0.37 | 0.35 | 0.60 | 0.43 | 0.72 | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 0.23 | 0.40 | 0.90 | 0.01 | 0.25 | 0.21 | 1.28 | 0.60 | ----- | z | ||||||||
1974 | 0.94 | 0.46 | 0.76 | 0.73 | 0.00 | 0.00 | 0.37 | 0.13 | 0.06 | 0.44 | 0.40 | 0.83 | b | 0.94 | b | |||||||||||
1975 | 0.54 | 1.00 | 0.67 | 0.34 | 0.44 | 0.45 | 0.56 | 0.38 | 0.22 | 0.77 | 0.68 | 0.40 | 1.00 | |||||||||||||
1976 | 0.35 | 0.46 | 0.40 | 0.57 | 1.40 | 0.26 | 0.75 | 0.80 | 1.14 | 0.18 | 0.00 | 0.08 | 1.40 | |||||||||||||
1977 | 0.67 | 0.40 | 0.27 | 0.01 | 0.78 | 0.66 | 1.01 | 0.35 | 0.30 | 0.10 | a | 0.70 | 1.39 | 1.39 | a | |||||||||||
1978 | 1.00 | 0.80 | 0.39 | 0.55 | 0.11 | 0.21 | 0.68 | 0.13 | 1.65 | 0.00 | 0.18 | 0.63 | 1.65 | |||||||||||||
1979 | 0.65 | 0.62 | 0.57 | 0.28 | 0.30 | 0.26 | 0.47 | 0.75 | 0.21 | 1.00 | 0.34 | 0.96 | 1.00 | |||||||||||||
1980 | 1.08 | 0.65 | 0.24 | 0.28 | 0.75 | 0.47 | 1.04 | 0.46 | 0.60 | 0.10 | 0.28 | 1.45 | 1.45 | |||||||||||||
1981 | 0.62 | 0.62 | 0.47 | 1.00 | 0.28 | 0.86 | 0.00 | 0.90 | 0.40 | 0.37 | 0.96 | a | 1.14 | 1.14 | a | |||||||||||
1982 | 0.58 | 0.57 | 0.74 | 0.88 | q | 0.42 | 0.52 | 0.31 | 0.13 | a | 0.29 | 0.50 | 1.06 | 1.34 | 1.34 | r | ||||||||||
1983 | 0.40 | 0.80 | 1.45 | 0.23 | 0.41 | 1.00 | 0.70 | 0.42 | 0.85 | 0.60 | 1.18 | 1.09 | 1.45 | |||||||||||||
1984 | 0.05 | a | 0.57 | 0.64 | 0.49 | 0.37 | 0.90 | 0.77 | 0.53 | ----- | z | 0.32 | a | 0.87 | 0.88 | ----- | z | |||||||||
1985 | 0.10 | 1.57 | 0.93 | 0.21 | 0.39 | 0.20 | 0.41 | 0.07 | 1.28 | 0.54 | a | 0.38 | 0.74 | 1.57 | a | |||||||||||
1986 | 0.91 | 0.89 | 0.62 | 0.18 | 0.42 | a | 0.26 | 0.55 | 0.50 | 0.56 | 0.19 | 0.17 | c | 0.12 | 0.91 | d | ||||||||||
1987 | 0.53 | 0.41 | 1.14 | 0.03 | 0.95 | 0.85 | 0.60 | a | 0.80 | 0.00 | 0.22 | 0.22 | 0.91 | b | 1.14 | c | ||||||||||
1988 | 0.56 | 0.20 | 0.11 | 0.92 | a | 0.75 | b | 0.33 | 0.05 | 0.09 | 0.23 | 0.27 | 1.35 | 0.89 | 1.35 | c | ||||||||||
1989 | 0.71 | 0.66 | 0.98 | 0.26 | a | 0.66 | 0.15 | 0.07 | 0.38 | 0.84 | 0.62 | 0.62 | 0.02 | a | 0.98 | b | ||||||||||
1990 | 1.07 | a | 0.76 | 0.25 | 0.82 | 0.51 | 0.60 | 0.15 | a | 0.77 | 0.19 | 0.13 | b | 0.60 | 0.23 | 1.07 | d | |||||||||
1991 | 0.05 | 0.05 | 1.22 | 0.19 | c | 0.60 | 0.84 | 0.32 | 0.25 | 1.18 | 0.96 | 0.44 | 0.31 | 1.22 | c | |||||||||||
1992 | 0.31 | 0.39 | 0.21 | 0.18 | 0.13 | 0.54 | 0.05 | a | 0.07 | 0.03 | 0.57 | 0.41 | 0.53 | 0.57 | a | |||||||||||
1993 | 1.30 | a | 0.59 | 1.20 | 0.49 | 0.57 | 1.13 | 0.17 | 0.82 | 0.09 | 0.20 | 0.24 | 0.55 | 1.30 | a | |||||||||||
1994 | 0.20 | 0.64 | 0.05 | 0.40 | 0.65 | 0.51 | 0.13 | a | 0.35 | 0.38 | 1.17 | 0.77 | 0.48 | 1.17 | a | |||||||||||
1995 | 1.19 | 0.47 | c | 2.76 | b | 0.35 | 0.69 | 0.83 | 0.29 | 0.07 | 0.01 | 0.09 | 0.80 | c | 1.88 | 2.76 | h | |||||||||
1996 | 0.73 | 0.65 | 0.71 | 0.37 | 0.59 | 0.14 | 0.09 | 0.05 | 0.22 | 0.30 | 0.83 | 0.85 | 0.85 | |||||||||||||
1997 | 1.64 | 0.28 | 0.55 | 0.41 | 0.28 | 0.48 | 0.23 | 0.21 | 0.50 | 0.60 | ----- | z | 0.31 | a | ----- | z | ||||||||||
1998 | 0.70 | a | 0.90 | 0.50 | a | 0.51 | 1.00 | 0.45 | 0.23 | 0.10 | 0.29 | 0.37 | 0.60 | 1.01 | d | 1.01 | f | |||||||||
1999 | 0.68 | a | 1.11 | b | 0.16 | a | 0.25 | 0.50 | b | 0.66 | a | 0.13 | 0.20 | 0.00 | 0.74 | 0.30 | a | 0.50 | a | 1.11 | i | |||||
2000 | 0.85 | a | 0.94 | 0.45 | 0.42 | b | 0.62 | 0.01 | 0.22 | 0.56 | 1.09 | 1.09 | c | 0.16 | b | 0.37 | 1.09 | h | ||||||||
2001 | 0.59 | 0.15 | 0.33 | 0.39 | 0.21 | 0.11 | 0.25 | 0.08 | 0.13 | 0.42 | 0.48 | a | 1.30 | c | 1.30 | d | ||||||||||
2002 | 0.50 | a | 0.66 | 0.30 | 0.48 | 0.54 | 0.04 | 0.08 | 0.17 | 0.20 | 1.00 | a | 0.80 | a | 1.03 | a | 1.03 | d | ||||||||
2003 | 0.29 | 0.52 | 0.50 | 0.48 | a | 0.48 | 0.06 | 0.06 | 0.65 | 0.20 | 0.10 | 0.10 | c | 0.86 | 0.86 | d | ||||||||||
2004 | 1.59 | 1.20 | 0.20 | 0.51 | 0.33 | 0.63 | 0.53 | 0.23 | 0.30 | 0.58 | 0.10 | 1.10 | 1.59 | |||||||||||||
2005 | 1.08 | 0.11 | c | 0.59 | 0.20 | 1.32 | 0.55 | 0.41 | 0.10 | 0.16 | 0.26 | 1.00 | 1.10 | 1.32 | c | |||||||||||
2006 | 0.87 | a | 1.85 | 0.76 | 1.11 | 0.50 | 0.68 | 1.09 | 0.16 | 0.35 | 0.81 | 0.50 | 0.62 | 1.85 | a | |||||||||||
2007 | 0.26 | 0.32 | 0.28 | 0.34 | 0.15 | 0.30 | 0.35 | 0.23 | 0.54 | 0.78 | 0.19 | 0.65 | 0.78 | |||||||||||||
2008 | 1.50 | 0.65 | 0.35 | 0.22 | 0.48 | j | 0.14 | 0.00 | 0.03 | 0.53 | 0.33 | 1.30 | 1.05 | a | 1.50 | k | ||||||||||
2009 | 0.35 | 0.31 | 0.35 | 0.50 | 0.69 | 0.85 | 0.00 | 0.43 | 0.22 | 0.96 | 0.22 | 0.20 | 0.96 | |||||||||||||
2010 | 0.76 | 0.07 | 1.03 | 1.05 | 0.50 | 0.87 | 0.38 | 0.50 | 0.80 | 1.58 | 0.63 | 0.84 | 1.58 | |||||||||||||
2011 | 0.06 | 0.37 | 0.90 | 0.42 | f | ----- | z | 0.52 | g | 0.00 | b | 0.27 | d | 0.10 | b | 1.31 | b | 0.33 | a | 0.41 | a | ----- | z | |||
2012 | 0.77 | 0.07 | 0.92 | 0.54 | 0.73 | c | 0.15 | c | 0.16 | a | 0.04 | a | 0.09 | a | 0.36 | 0.68 | 1.28 | 1.28 | i | |||||||
2013 | 0.32 | 0.18 | 0.41 | 0.23 | a | 0.32 | a | 0.30 | 0.48 | 0.08 | 1.60 | d | 0.42 | r | 0.30 | 0.19 | 1.60 | x | ||||||||
2014 | 0.37 | 0.47 | 0.73 | 0.50 | 0.10 | 0.30 | 0.30 | 1.34 | d | 1.13 | d | 0.08 | b | 0.36 | 0.57 | 1.34 | j | |||||||||
2015 | 0.16 | 1.00 | 0.10 | 0.04 | 1.07 | h | 0.40 | c | 0.12 | f | 0.83 | e | 0.46 | e | 0.51 | f | 0.50 | e | 1.55 | e | ----- | z | ||||
2016 | 0.43 | g | 0.57 | e | 1.05 | d | 0.28 | g | 0.68 | f | 0.09 | d | 0.15 | g | 0.04 | d | 0.77 | e | 1.58 | g | 0.08 | e | 1.01 | f | ----- | z |
2017 | 1.60 | c | 3.10 | f | 0.32 | f | 0.73 | f | 0.69 | g | 0.96 | d | 0.22 | e | 0.22 | c | 0.40 | e | 0.52 | f | 4.00 | e | 0.12 | f | ----- | z |
2018 | 0.76 | g | 0.31 | e | 1.64 | f | 0.22 | k | 0.72 | d | 1.00 | m | 0.04 | e | 0.09 | a | 0.00 | a | 0.89 | b | 0.41 | 0.28 | k | ----- | z | |
2019 | 0.82 | h | 1.39 | e | 0.25 | g | 0.40 | f | 0.90 | f | 0.28 | e | 0.27 | e | 0.07 | d | 0.44 | g | 0.49 | e | 0.40 | h | 0.61 | i | ----- | z |
2020 | 0.63 | k | 0.11 | e | 0.57 | o | ----- | z | 0.75 | y | 0.90 | a | 0.26 | b | 0.15 | 0.05 | h | ----- | z | 1.21 | v | 0.41 | ----- | z | ||
2021 | 1.47 | 0.25 | f | 0.31 | b | 0.39 | d | ----- | z | 0.09 | 0.15 | d | 0.55 | d | 0.10 | b | 2.11 | a | 0.45 | n | 1.52 | d | ----- | z | ||
2022 | 0.23 | g | 0.05 | f | ----- | z | 0.48 | k | 0.98 | k | 1.50 | y | ----- | z | 0.03 | x | 0.28 | u | ----- | z | 1.44 | 1.70 | i | ----- | z | |
2023 | 0.63 | g | 0.21 | g | 1.36 | c | 0.43 | e | 0.60 | g | 0.46 | d | 0.00 | j | 2.20 | f | 0.25 | e | 0.96 | i | 0.38 | f | 0.23 | g | ----- | z |
2024 | 0.39 | h | 0.64 | f | 0.38 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.70 | 0.65 | 0.58 | 0.41 | 0.53 | 0.51 | 0.34 | 0.34 | 0.43 | 0.50 | 0.62 | 0.77 | 1.22 | |||||||||||||
S.D. | 0.38 | 0.40 | 0.42 | 0.27 | 0.30 | 0.32 | 0.31 | 0.31 | 0.39 | 0.39 | 0.52 | 0.51 | 0.33 | |||||||||||||
SKEW | 0.69 | 0.66 | 2.12 | 0.99 | 0.73 | 0.44 | 1.34 | 1.10 | 1.28 | 1.34 | 3.48 | 1.05 | 0.75 | |||||||||||||
MAX | 1.76 | 1.85 | 2.76 | 1.11 | 1.40 | 1.29 | 1.50 | 1.34 | 1.65 | 2.11 | 4.00 | 2.28 | 2.16 | |||||||||||||
MIN | 0.05 | 0.05 | 0.05 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.57 | |||||||||||||
YRS | 79 | 81 | 80 | 76 | 73 | 84 | 83 | 85 | 83 | 80 | 81 | 81 | 59 |