YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.91 | 0.85 | 0.02 | 0.69 | ----- | z | ||||
1938 | 0.32 | 0.45 | 1.52 | 0.10 | 0.02 | 1.28 | 0.80 | 0.74 | 1.12 | 0.00 | 0.21 | 0.84 | 1.52 | |||||||||||||
1939 | 0.70 | 0.19 | 0.55 | 0.56 | 0.00 | 0.03 | 0.74 | 0.62 | 1.11 | 1.60 | 0.87 | 0.45 | 1.60 | |||||||||||||
1940 | 0.35 | 0.91 | 0.64 | 0.15 | 0.23 | 0.77 | 0.12 | 0.82 | 2.36 | 0.24 | 1.49 | 1.05 | 2.36 | |||||||||||||
1941 | 0.44 | a | 0.37 | 0.45 | 1.15 | 0.73 | 1.04 | 0.60 | 0.81 | 2.04 | 0.59 | 0.44 | a | 0.66 | 2.04 | b | ||||||||||
1942 | 0.11 | 0.50 | 0.11 | 0.30 | 0.00 | 0.06 | 0.47 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
1943 | ----- | z | 0.29 | 0.73 | 0.05 | 0.59 | 0.24 | 0.73 | 0.31 | 0.88 | w | 0.18 | 0.04 | 0.50 | ----- | z | ||||||||||
1944 | 0.25 | 0.36 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.65 | 0.81 | 1.35 | ----- | z | |||||
1945 | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | 0.04 | 0.09 | 1.20 | p | 0.64 | 1.20 | 0.38 | 1.12 | 0.43 | ----- | z | |||||||
1947 | 0.45 | 0.12 | 0.09 | 0.03 | 0.20 | 0.21 | 1.30 | v | 0.30 | v | ----- | z | 0.28 | l | 0.08 | ----- | z | ----- | z | |||||||
1948 | 0.88 | b | 0.87 | c | ----- | z | ----- | z | ----- | z | 0.44 | 0.26 | 1.72 | 0.30 | 0.81 | 0.06 | 0.64 | a | ----- | z | ||||||
1949 | 0.76 | 0.21 | 0.60 | 0.52 | 0.14 | 0.19 | 1.20 | 0.70 | 0.45 | 0.58 | 0.33 | 0.82 | 1.20 | |||||||||||||
1950 | 0.15 | 0.53 | 0.08 | 0.05 | 0.00 | 0.25 | 1.71 | 0.46 | 0.91 | 0.00 | 0.02 | 0.00 | 1.71 | |||||||||||||
1951 | 0.54 | 0.21 | 0.29 | 0.28 | 0.00 | 0.00 | 0.75 | 0.89 | 0.70 | 0.82 | a | 0.33 | 0.76 | 0.89 | a | |||||||||||
1952 | 1.03 | 0.24 | 0.60 | 0.40 | 0.06 | 0.99 | 0.63 | 0.50 | 1.74 | 0.00 | 0.41 | 0.18 | 1.74 | |||||||||||||
1953 | 0.12 | 0.82 | 0.46 | 0.35 | 0.15 | 0.33 | 0.88 | a | 0.63 | 0.01 | 0.10 | 0.31 | ----- | z | ----- | z | ||||||||||
1954 | 0.56 | 0.13 | 1.01 | 0.00 | 0.23 | 0.21 | 1.56 | 0.60 | 0.30 | 0.07 | 0.00 | 0.08 | 1.56 | |||||||||||||
1955 | 0.89 | 0.43 | 0.03 | 0.09 | 0.31 | 0.38 | 0.68 | 0.24 | 0.06 | 1.41 | 0.05 | 0.75 | 1.41 | |||||||||||||
1956 | 0.37 | 0.89 | 0.00 | 0.26 | 0.10 | 0.45 | 0.37 | 0.43 | 0.00 | 0.24 | 0.00 | 0.13 | 0.89 | |||||||||||||
1957 | 1.44 | 0.12 | 0.42 | 0.44 | 0.64 | 0.83 | 0.76 | 1.23 | 0.01 | 0.46 | 0.53 | 0.10 | 1.44 | |||||||||||||
1958 | 0.14 | 0.67 | 0.70 | 1.23 | 0.20 | 0.42 | 0.36 | 0.59 | 1.17 | 0.34 | 0.44 | 0.00 | 1.23 | |||||||||||||
1959 | 0.07 | 0.98 | 0.02 | 0.37 | 0.00 | 0.20 | 0.83 | 0.89 | 0.00 | 1.40 | 0.72 | 0.76 | 1.40 | |||||||||||||
1960 | 0.97 | 0.47 | 0.21 | 0.00 | 0.62 | 0.28 | 1.59 | 0.59 | 0.95 | 1.21 | 0.02 | 0.58 | 1.59 | |||||||||||||
1961 | 0.38 | 0.00 | 0.24 | 0.00 | 0.08 | 0.55 | 1.29 | 0.64 | 0.76 | 0.81 | 0.44 | ----- | z | ----- | z | |||||||||||
1962 | 1.04 | 0.06 | 0.32 | 0.19 | 0.00 | ----- | z | 0.69 | 0.12 | 0.54 | 0.47 | 0.84 | 0.86 | ----- | z | |||||||||||
1963 | 0.46 | 0.55 | 0.28 | 0.41 | 0.02 | 0.04 | 0.43 | 0.59 | 0.72 | 0.50 | 0.61 | 0.13 | 0.72 | |||||||||||||
1964 | 0.23 | 0.02 | 0.31 | 0.12 | 0.08 | 0.00 | 1.14 | 0.26 | 0.83 | 0.17 | 0.27 | 0.40 | 1.14 | |||||||||||||
1965 | 0.90 | 0.35 | 0.44 | 0.15 | 0.02 | 0.30 | 1.00 | 0.53 | 0.70 | 0.10 | 1.00 | 2.22 | 2.22 | |||||||||||||
1966 | 0.58 | 0.48 | 0.11 | 0.02 | 0.00 | 1.28 | ----- | z | 0.54 | 0.97 | 0.05 | 0.49 | 0.59 | ----- | z | |||||||||||
1967 | 0.10 | 0.74 | 0.37 | 0.19 | 0.13 | 0.97 | 1.00 | 3.34 | 0.79 | ----- | z | 0.17 | 0.37 | k | ----- | z | ||||||||||
1968 | ----- | z | 0.25 | 0.22 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.07 | 0.00 | 0.60 | 1.00 | ----- | z | ||||||
1969 | 0.44 | 0.13 | 0.13 | 0.06 | 0.60 | 0.04 | 0.47 | 0.95 | 0.56 | 1.36 | 0.38 | 0.60 | 1.36 | |||||||||||||
1970 | 0.04 | 0.40 | 0.70 | 0.12 | 0.09 | 0.70 | 0.73 | 0.56 | 0.32 | 0.94 | 0.00 | 0.25 | 0.94 | |||||||||||||
1971 | 0.11 | 0.18 | 0.02 | 0.24 | 0.00 | 0.26 | 1.48 | 0.47 | 0.75 | 1.59 | 0.40 | 0.52 | 1.59 | |||||||||||||
1972 | 0.02 | 0.00 | 0.09 | 0.00 | 0.07 | 0.54 | 1.04 | 1.86 | 1.06 | 2.09 | 0.29 | 0.88 | 2.09 | |||||||||||||
1973 | 0.45 | 0.85 | ----- | z | 0.18 | 0.99 | 0.78 | ----- | z | 0.38 | 0.52 | 0.08 | 0.13 | 0.00 | ----- | z | ||||||||||
1974 | 0.59 | 0.16 | 0.53 | 0.56 | 0.10 | 0.04 | 0.67 | 0.34 | 0.45 | 0.90 | 0.61 | ----- | z | ----- | z | |||||||||||
1975 | ----- | z | ----- | z | 0.39 | ----- | z | ----- | z | 0.00 | 0.66 | ----- | z | ----- | z | ----- | z | 0.87 | 0.58 | ----- | z | |||||
1976 | 0.11 | ----- | z | 0.37 | 0.38 | 0.30 | 0.25 | 0.76 | 0.17 | 0.48 | ----- | z | 0.26 | ----- | z | ----- | z | |||||||||
1977 | 0.39 | 0.07 | 0.67 | 0.26 | 0.00 | 0.59 | 0.53 | 0.57 | 0.51 | 0.71 | ----- | z | 0.31 | ----- | z | |||||||||||
1978 | 0.72 | ----- | z | 0.84 | 0.03 | 0.29 | 0.93 | 1.25 | 0.81 | 0.38 | 1.70 | 1.87 | 1.64 | ----- | z | |||||||||||
1979 | 1.28 | 0.48 | 0.32 | 0.30 | 0.38 | 0.45 | 0.94 | 1.04 | 0.32 | 0.40 | 0.80 | 0.71 | 1.28 | |||||||||||||
1980 | 0.95 | 1.13 | 0.55 | 0.09 | 0.21 | 0.05 | 0.26 | 0.46 | 1.77 | 0.19 | 0.32 | 0.24 | 1.77 | |||||||||||||
1981 | 0.35 | 0.52 | 0.55 | 0.24 | 1.95 | 0.25 | 0.92 | 0.36 | 0.43 | 0.25 | 0.37 | 0.00 | 1.95 | |||||||||||||
1982 | 0.40 | a | 0.88 | 1.12 | 0.28 | 0.30 | 0.06 | 0.33 | 0.55 | 0.80 | 0.00 | 0.66 | 1.07 | 1.12 | a | |||||||||||
1983 | 0.67 | 0.98 | 0.96 | 0.79 | 0.15 | 0.06 | 0.48 | 1.47 | 2.09 | 1.62 | 0.56 | 0.58 | 2.09 | |||||||||||||
1984 | 0.26 | 0.30 | 0.06 | 0.54 | 0.52 | a | 0.98 | 1.35 | 0.58 | 0.50 | 1.14 | 0.34 | 0.99 | 1.35 | a | |||||||||||
1985 | 0.42 | 0.38 | 0.83 | 0.71 | 0.16 | 0.20 | 0.60 | 1.33 | c | 1.79 | 1.10 | 0.76 | 0.27 | 1.79 | c | |||||||||||
1986 | 0.00 | 0.82 | 0.45 | 0.07 | 0.52 | 0.16 | 1.35 | 0.61 | 0.80 | 0.85 | 1.23 | 0.47 | 1.35 | |||||||||||||
1987 | 0.21 | 0.58 | 0.30 | 0.26 | 0.52 | 0.28 | 3.00 | 1.80 | 0.56 | 0.55 | 0.94 | 0.64 | 3.00 | |||||||||||||
1988 | 0.59 | 0.52 | 0.00 | 0.81 | 0.05 | 0.24 | 0.80 | 0.88 | 1.06 | 0.62 | 0.48 | ----- | z | ----- | z | |||||||||||
1989 | 0.99 | 0.00 | 0.22 | 0.00 | 0.40 | 0.00 | 0.95 | 0.78 | 1.31 | 1.28 | 0.14 | 0.51 | 1.31 | |||||||||||||
1990 | 0.47 | 0.22 | 0.45 | 0.24 | 0.68 | 0.27 | 1.02 | 0.63 | 0.61 | 0.49 | 1.12 | e | 0.85 | 1.12 | e | |||||||||||
1991 | 0.30 | 1.15 | 0.82 | 0.00 | 0.00 | 0.33 | 0.61 | 0.75 | 0.55 | 0.54 | 0.60 | 1.40 | 1.40 | |||||||||||||
1992 | 0.85 | 1.00 | 0.92 | 0.80 | 2.70 | 0.51 | 0.48 | 1.16 | 0.35 | 0.62 | 0.20 | 1.72 | 2.70 | |||||||||||||
1993 | 1.29 | 0.80 | 0.23 | 0.25 | 0.55 | 0.10 | 0.63 | 0.93 | 0.21 | 0.71 | 0.58 | 0.63 | 1.29 | |||||||||||||
1994 | 0.29 | 1.35 | 0.80 | 0.15 | 0.21 | 0.42 | 1.51 | a | 0.95 | 0.60 | 1.02 | 2.25 | 1.50 | 2.25 | a | |||||||||||
1995 | 1.70 | 0.62 | 0.77 | 0.57 | 0.21 | 0.00 | 0.20 | 0.51 | 0.86 | 0.00 | 0.39 | 0.18 | 1.70 | |||||||||||||
1996 | 0.00 | i | 1.48 | 0.00 | 0.00 | 0.00 | 1.30 | 0.92 | f | 0.68 | 0.94 | 1.03 | 0.50 | 0.00 | 1.48 | o | ||||||||||
1997 | 1.10 | 0.83 | 0.06 | 0.18 | 0.43 | 0.85 | 0.77 | 0.44 | 1.27 | 1.05 | 1.00 | 0.70 | 1.27 | |||||||||||||
1998 | 0.38 | 0.57 | 0.78 | 0.18 | 0.00 | 0.08 | c | 1.50 | 0.55 | 0.35 | ----- | z | 0.51 | 0.67 | ----- | z | ||||||||||
1999 | 0.13 | 0.00 | 0.19 | b | 1.08 | 0.00 | 0.70 | i | 1.32 | 1.40 | 0.64 | 0.00 | 0.00 | 0.00 | 1.40 | k | ||||||||||
2000 | 0.08 | 0.05 | 0.75 | 0.00 | 0.00 | 0.60 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | 0.00 | 0.21 | 0.08 | 0.00 | 0.23 | 0.69 | 0.88 | 1.57 | 0.92 | a | 0.29 | 0.60 | ----- | z | ||||||||||
2003 | 0.07 | 0.59 | 0.44 | 0.20 | 0.42 | 0.24 | 0.58 | 0.66 | 0.95 | 1.20 | 1.37 | 0.23 | 1.37 | |||||||||||||
2004 | 1.04 | 0.50 | 0.76 | 0.67 | 0.04 | 0.08 | 0.28 | 0.85 | 0.66 | 1.03 | 0.57 | 0.46 | 1.04 | |||||||||||||
2005 | 0.59 | 1.13 | 0.52 | 0.62 | 0.00 | a | 0.10 | 0.94 | 0.97 | 1.27 | 0.80 | 0.04 | 0.18 | 1.27 | a | |||||||||||
2006 | 0.30 | 0.05 | 0.39 | 0.10 | 0.13 | 0.28 | 1.45 | 1.72 | 0.67 | 0.82 | 0.10 | 0.10 | 1.72 | |||||||||||||
2007 | 0.29 | 0.40 | 0.89 | 0.17 | 0.66 | 0.20 | b | 1.77 | 1.31 | 0.27 | 0.00 | 0.26 | a | 2.00 | 2.00 | c | ||||||||||
2008 | 1.20 | 0.85 | 0.00 | 0.00 | 0.82 | 0.36 | 0.72 | 1.53 | 1.17 | 0.94 | 0.80 | 0.51 | 1.53 | |||||||||||||
2009 | 0.22 | 0.20 | 0.25 | 0.08 | 0.50 | 0.90 | 1.00 | 1.00 | 0.67 | 0.22 | 0.12 | 1.00 | 1.00 | |||||||||||||
2010 | 2.00 | 0.45 | 0.65 | 0.15 | 0.04 | 0.08 | 1.27 | 0.95 | 0.70 | 0.05 | 0.00 | 0.85 | 2.00 | |||||||||||||
2011 | 0.00 | 0.08 | 0.00 | 0.07 | a | 0.00 | g | 0.00 | f | 0.62 | a | 0.50 | 0.40 | 0.30 | 0.43 | b | 0.90 | 0.90 | q | |||||||
2012 | 0.38 | a | 0.12 | 0.17 | 0.00 | c | 0.00 | 0.00 | g | 1.48 | e | 0.33 | 1.02 | 0.00 | 0.25 | g | 0.91 | d | ----- | z | ||||||
2013 | 0.55 | 0.05 | c | 0.32 | f | 0.36 | d | 0.20 | d | 0.48 | a | 0.76 | e | 0.57 | c | 1.70 | 0.00 | a | 0.78 | a | 0.20 | c | ----- | z | ||
2014 | 0.00 | b | 0.08 | 0.62 | d | 0.07 | a | 0.00 | c | 0.00 | b | 0.44 | b | 0.44 | 2.40 | 0.97 | g | 0.38 | d | 0.60 | 2.40 | y | ||||
2015 | 1.10 | b | 0.05 | a | 0.95 | d | 0.55 | n | 0.13 | k | 0.22 | 0.81 | g | 0.80 | c | 1.34 | a | 1.05 | ----- | z | 0.76 | ----- | z | |||
2016 | 0.51 | b | 0.00 | c | 0.21 | b | 0.23 | f | 0.90 | j | 0.37 | b | 0.82 | c | 2.36 | g | 3.25 | 0.45 | i | 0.27 | 1.18 | d | ----- | z | ||
2017 | 0.45 | d | 0.92 | c | 0.35 | a | 0.00 | c | 0.31 | a | 0.14 | b | 2.46 | e | 1.26 | d | 0.15 | 0.30 | 0.00 | 0.08 | 2.46 | w | ||||
2018 | 0.34 | 1.15 | b | 0.13 | 0.00 | 0.00 | d | 0.39 | 0.89 | b | 0.71 | a | 0.72 | f | 2.00 | d | 0.00 | b | 0.58 | b | 2.00 | w | ||||
2019 | 0.73 | b | 0.61 | b | 0.60 | b | 0.26 | 0.28 | f | 0.00 | c | 0.38 | a | 0.98 | g | 0.94 | a | 0.27 | c | 1.28 | c | 0.82 | ----- | z | ||
2020 | 0.57 | b | 0.74 | 0.46 | a | 0.08 | a | 0.00 | d | 0.25 | k | 0.32 | 0.20 | a | 0.33 | 0.36 | c | 0.23 | d | 0.56 | f | ----- | z | |||
2021 | 0.50 | f | 0.00 | g | 0.94 | 0.12 | h | 0.00 | v | ----- | z | 0.77 | 0.70 | 1.59 | 0.31 | 0.00 | 0.50 | ----- | z | |||||||
2022 | 1.00 | 0.00 | 0.00 | ----- | z | 0.00 | 1.00 | 0.50 | 0.73 | 1.68 | 0.86 | 0.02 | 1.62 | ----- | z | |||||||||||
2023 | 1.04 | 1.04 | 0.78 | 0.00 | 0.40 | 0.00 | 1.15 | 0.88 | 0.88 | 0.16 | 0.32 | 1.61 | 1.61 | |||||||||||||
2024 | 0.28 | 0.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.54 | 0.48 | 0.44 | 0.26 | 0.27 | 0.37 | 0.89 | 0.79 | 0.86 | 0.64 | 0.48 | 0.66 | 1.57 | |||||||||||||
S.D. | 0.42 | 0.38 | 0.32 | 0.28 | 0.42 | 0.35 | 0.50 | 0.49 | 0.62 | 0.53 | 0.44 | 0.49 | 0.47 | |||||||||||||
SKEW | 1.04 | 0.51 | 0.59 | 1.55 | 3.48 | 1.08 | 1.50 | 2.31 | 1.26 | 0.69 | 1.46 | 0.95 | 0.79 | |||||||||||||
MAX | 2.00 | 1.48 | 1.52 | 1.23 | 2.70 | 1.30 | 3.00 | 3.34 | 3.25 | 2.09 | 2.25 | 2.22 | 3.00 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 | 0.72 | |||||||||||||
YRS | 78 | 80 | 79 | 76 | 75 | 76 | 75 | 76 | 78 | 76 | 80 | 75 | 47 |