YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | 0.35 | 0.41 | 0.48 | u | 0.05 | 0.18 | 0.75 | 2.20 | 0.15 | 0.23 | 0.62 | 0.35 | 0.63 | 2.20 | u | |||||||||||
1938 | 0.46 | 0.27 | 0.29 | 0.29 | 0.33 | 0.66 | 0.08 | 0.00 | 0.20 | 0.49 | y | 0.33 | ----- | z | ----- | z | ||||||||||
1939 | 0.35 | 0.47 | 0.35 | 0.15 | 0.15 | 0.18 | 0.18 | 0.31 | 0.53 | 0.11 | 0.10 | 0.35 | 0.53 | |||||||||||||
1940 | 0.46 | b | 0.35 | 0.40 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | r | 0.09 | 0.50 | 0.41 | ----- | z | |||
1959 | 0.51 | 0.22 | 0.55 | 0.12 | 0.24 | 0.50 | 0.08 | 0.08 | 0.56 | 0.25 | 0.17 | 0.13 | 0.56 | |||||||||||||
1960 | 0.20 | 0.36 | 0.80 | 0.22 | a | 0.40 | 0.10 | 0.12 | 0.23 | 0.15 | 0.23 | 0.68 | 0.40 | 0.80 | a | |||||||||||
1961 | 0.22 | 0.40 | 0.28 | 0.22 | 0.30 | 0.26 | 0.30 | 0.15 | 0.43 | 0.17 | 0.73 | 0.45 | 0.73 | |||||||||||||
1962 | 0.50 | c | 0.22 | 0.20 | 0.33 | 0.54 | 0.00 | 0.07 | 0.25 | 0.21 | 0.45 | 0.55 | 0.30 | 0.55 | c | |||||||||||
1963 | 0.15 | 0.60 | 0.40 | 0.70 | 0.27 | 0.13 | 0.37 | 0.18 | 0.65 | 0.13 | 0.75 | 0.50 | 0.75 | |||||||||||||
1964 | 0.24 | 0.25 | 0.12 | 0.15 | 0.12 | 0.83 | 0.73 | 0.11 | 0.23 | 0.30 | 0.25 | 1.10 | 1.10 | |||||||||||||
1965 | 1.00 | 0.12 | 0.60 | 0.25 | 0.40 | 1.30 | 0.35 | 1.42 | 0.12 | 0.09 | 0.25 | 0.12 | 1.42 | |||||||||||||
1966 | 0.30 | 0.20 | 0.19 | 0.18 | 0.67 | 0.16 | 0.40 | 0.05 | 1.12 | 0.70 | 0.60 | 0.39 | 1.12 | |||||||||||||
1967 | 0.22 | 2.00 | 0.17 | 0.90 | 0.70 | 0.45 | 0.00 | 0.05 | 0.24 | 0.50 | 0.20 | 0.35 | 2.00 | |||||||||||||
1968 | 0.18 | 0.40 | 0.26 | 0.20 | 0.35 | 0.50 | 0.16 | 0.80 | 0.22 | 0.40 | 0.75 | 0.73 | 0.80 | |||||||||||||
1969 | 0.30 | 0.32 | 0.47 | 0.46 | 0.70 | 1.70 | 0.35 | 0.00 | 0.27 | 0.29 | 0.30 | 0.30 | 1.70 | |||||||||||||
1970 | 0.60 | 0.50 | 0.32 | 0.18 | 0.42 | 0.30 | 1.50 | 0.00 | 0.21 | 0.45 | 0.45 | 0.37 | 1.50 | |||||||||||||
1971 | 0.70 | 0.18 | 0.37 | 0.29 | 0.90 | 0.16 | 0.75 | 0.11 | 0.22 | 1.25 | 0.85 | 0.75 | 1.25 | |||||||||||||
1972 | 0.30 | 0.23 | 0.55 | 0.22 | 0.60 | 0.35 | 0.10 | 0.10 | 0.15 | 0.52 | 0.23 | 0.66 | 0.66 | |||||||||||||
1973 | 0.20 | 0.20 | 0.20 | 0.20 | 0.47 | 0.10 | 0.00 | 0.10 | 0.50 | 0.50 | 0.55 | 0.60 | 0.60 | |||||||||||||
1974 | 0.20 | 0.38 | 0.25 | 0.57 | 0.12 | 0.25 | 0.40 | 0.04 | 0.00 | 0.20 | 0.20 | 0.55 | 0.57 | |||||||||||||
1975 | 0.37 | 0.24 | 0.55 | 0.20 | 0.11 | 0.13 | 0.62 | 0.75 | 0.00 | 0.40 | 0.22 | 0.60 | 0.75 | |||||||||||||
1976 | 0.60 | 0.57 | 0.36 | 0.21 | 0.18 | 0.10 | 0.00 | 0.70 | 0.25 | 0.23 | 0.21 | 0.11 | 0.70 | |||||||||||||
1977 | 0.24 | 0.29 | 0.40 | 0.37 | 0.82 | 0.28 | 0.20 | 0.20 | 0.60 | 0.10 | 0.70 | 0.55 | 0.82 | |||||||||||||
1978 | 0.33 | ----- | z | 0.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.35 | y | ----- | z | ----- | z | ----- | z | 0.28 | x | 0.26 | v | 0.58 | y | ----- | z |
2007 | ----- | z | 0.22 | w | 0.22 | x | 0.31 | u | 0.34 | y | ----- | z | ----- | z | ----- | z | ----- | z | 1.12 | x | 0.38 | y | ----- | z | ----- | z |
2008 | ----- | z | 0.20 | y | 0.15 | t | 0.11 | 0.59 | 0.19 | ----- | z | ----- | z | ----- | z | 0.30 | v | 0.35 | 0.33 | b | ----- | z | ||||
2009 | 0.30 | 0.25 | 0.29 | 0.51 | 0.43 | 0.05 | ----- | z | 0.80 | 0.12 | 0.35 | 0.30 | 0.48 | ----- | z | |||||||||||
2010 | 0.50 | 0.16 | 0.16 | 0.63 | 0.35 | 0.73 | 0.07 | 0.03 | 0.37 | 0.74 | 0.51 | 0.36 | 0.74 | |||||||||||||
2011 | ----- | z | 0.47 | u | 0.21 | l | 0.36 | l | 1.10 | b | 0.60 | o | ----- | z | ----- | z | ----- | z | 0.36 | y | ----- | z | ----- | z | ----- | z |
2012 | 1.00 | v | ----- | z | 0.27 | y | 0.32 | u | ----- | z | 0.60 | t | ----- | z | ----- | z | ----- | z | 0.31 | x | 0.29 | y | 0.67 | x | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | 0.18 | y | 0.53 | y | 0.27 | v | ----- | z | 0.29 | w | 0.59 | q | ----- | z | 0.28 | y | ----- | z | ----- | z |
2014 | ----- | z | 0.20 | s | 0.64 | x | 0.32 | w | 0.31 | 0.43 | 0.09 | 0.30 | 0.09 | 0.20 | y | 0.67 | u | 0.61 | v | ----- | z | |||||
2015 | ----- | z | 0.64 | x | 0.60 | v | ----- | z | 0.60 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.52 | x | 0.84 | v | ----- | z |
2016 | 0.38 | 0.35 | 0.15 | ----- | z | 0.36 | y | ----- | z | ----- | z | ----- | z | 0.26 | 0.46 | t | 0.39 | y | 0.42 | s | ----- | z | ||||
2017 | 0.27 | w | 0.26 | p | 0.51 | u | 0.61 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.38 | y | 0.33 | y | ----- | z | ----- | z |
2018 | ----- | z | 0.20 | x | ----- | z | 0.28 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.30 | y | ----- | z |
2019 | ----- | z | 1.60 | r | 0.65 | w | 0.32 | y | ----- | z | ----- | z | ----- | z | ----- | z | 0.31 | r | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | 0.20 | y | 0.34 | y | 0.36 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.90 | v | 0.21 | x | ----- | z |
2021 | 0.23 | x | 0.31 | s | ----- | z | ----- | z | ----- | z | 0.13 | 0.34 | 0.00 | 0.43 | 0.56 | 0.35 | x | ----- | z | ----- | z | |||||
2022 | ----- | z | ----- | z | ----- | z | 0.24 | v | 0.75 | 0.50 | 0.27 | 0.28 | 0.12 | ----- | z | 0.49 | ----- | z | ----- | z | ||||||
2023 | ----- | z | 0.06 | 0.29 | 0.36 | 0.60 | ----- | z | ----- | z | 0.15 | 0.23 | 0.47 | 0.35 | 0.85 | ----- | z | |||||||||
2024 | 0.59 | 0.46 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.38 | 0.37 | 0.36 | 0.31 | 0.45 | 0.40 | 0.37 | 0.26 | 0.30 | 0.39 | 0.43 | 0.48 | 0.94 | |||||||||||||
S.D. | 0.19 | 0.35 | 0.17 | 0.20 | 0.26 | 0.39 | 0.49 | 0.33 | 0.23 | 0.26 | 0.21 | 0.23 | 0.42 | |||||||||||||
SKEW | 1.29 | 3.89 | 0.77 | 1.31 | 0.62 | 1.80 | 2.49 | 1.96 | 1.65 | 1.38 | 0.40 | 0.65 | 1.18 | |||||||||||||
MAX | 1.00 | 2.00 | 0.80 | 0.90 | 1.10 | 1.70 | 2.20 | 1.42 | 1.12 | 1.25 | 0.85 | 1.10 | 2.00 | |||||||||||||
MIN | 0.15 | 0.06 | 0.12 | 0.05 | 0.11 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.10 | 0.11 | 0.53 | |||||||||||||
YRS | 28 | 28 | 27 | 26 | 29 | 28 | 26 | 28 | 29 | 26 | 28 | 26 | 21 |