YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.20 | ----- | z | |
1933 | 0.45 | 0.58 | 0.30 | 1.20 | 0.34 | 0.38 | w | 0.01 | 0.43 | 0.27 | 0.65 | 0.29 | 1.00 | 1.20 | w | |||||||||||
1934 | 0.44 | a | 0.25 | 0.32 | 0.13 | 0.18 | 0.68 | 0.06 | 0.22 | 0.20 | 0.56 | 0.56 | h | 0.64 | 0.68 | i | ||||||||||
1935 | 0.42 | 0.34 | 0.27 | 0.82 | 0.20 | 0.34 | 0.06 | 0.17 | 0.11 | 0.41 | 0.27 | b | 0.62 | 0.82 | b | |||||||||||
1936 | 0.58 | h | 0.81 | 0.19 | 0.17 | 0.22 | r | 1.21 | 0.07 | 0.01 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
1937 | 0.36 | 0.37 | n | 0.58 | 0.87 | 0.23 | 0.70 | 0.04 | 0.17 | 0.30 | 0.16 | 0.47 | 0.76 | 0.87 | n | |||||||||||
1938 | 0.43 | 0.99 | l | 0.32 | 0.78 | 0.44 | 0.62 | 0.04 | 0.00 | 0.12 | 0.49 | 0.40 | 0.34 | 0.99 | l | |||||||||||
1939 | 0.24 | 0.83 | 0.66 | 0.53 | 0.19 | 0.24 | 0.33 | 0.00 | 0.21 | 0.33 | 0.02 | 0.47 | 0.83 | |||||||||||||
1940 | 0.56 | 0.74 | 0.94 | 0.58 | u | 0.14 | 0.03 | 0.36 | 0.00 | 0.65 | 0.41 | 0.35 | 0.39 | 0.94 | u | |||||||||||
1941 | 0.37 | 0.36 | 0.32 | 0.32 | 0.59 | 0.97 | 0.03 | 0.23 | 0.61 | 0.72 | 0.95 | 0.75 | 0.97 | |||||||||||||
1942 | 0.60 | 0.60 | 0.19 | 0.84 | 0.33 | 1.55 | 0.57 | 0.17 | 0.00 | 0.41 | 0.70 | 0.59 | 1.55 | |||||||||||||
1943 | 0.51 | 0.39 | 0.70 | 0.88 | 0.52 | ----- | 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 | 0.06 | 0.37 | 0.27 | 0.91 | ----- | z | ||||
1957 | 0.45 | 0.86 | 0.54 | 0.18 | 0.70 | 0.37 | 0.03 | 0.03 | 0.29 | 0.93 | 0.52 | 0.44 | d | 0.93 | d | |||||||||||
1958 | 0.56 | 0.22 | 0.44 | 0.51 | 0.46 | 1.14 | 0.00 | 0.02 | 0.17 | 0.10 | 0.59 | 1.14 | 1.14 | |||||||||||||
1959 | 0.54 | 0.63 | 0.51 | 0.25 | 0.36 | 0.64 | 0.17 | 0.36 | 0.68 | 0.28 | 0.15 | 0.17 | 0.68 | |||||||||||||
1960 | 0.52 | 0.21 | 0.63 | 0.27 | 0.73 | 0.52 | 0.00 | 0.34 | 0.56 | 0.60 | 0.74 | 0.27 | 0.74 | |||||||||||||
1961 | 0.22 | 0.63 | 0.25 | 0.50 | 0.71 | 0.59 | 0.09 | 0.09 | 0.39 | 0.32 | 0.45 | 0.47 | 0.71 | |||||||||||||
1962 | 0.23 | 0.14 | 0.58 | 0.53 | 0.75 | 0.14 | 0.00 | 0.30 | 0.53 | 0.84 | 0.53 | 0.71 | 0.84 | |||||||||||||
1963 | 0.37 | 0.45 | a | 0.22 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.28 | 0.74 | 0.30 | ----- | z | |||||
1964 | 0.38 | 0.15 | 0.32 | 0.26 | 0.09 | 0.36 | 0.38 | 0.06 | 0.28 | 0.71 | 0.61 | 0.64 | 0.71 | |||||||||||||
1965 | 0.72 | 0.13 | 0.14 | 0.26 | 0.59 | 0.70 | 0.33 | 0.42 | 0.20 | 0.29 | 0.41 | 0.14 | 0.72 | |||||||||||||
1966 | 1.03 | 0.11 | 0.35 | 0.21 | 0.29 | 0.56 | 0.52 | 0.12 | 0.23 | 0.49 | 0.59 | 0.86 | 1.03 | |||||||||||||
1967 | 0.73 | 0.18 | 0.49 | 0.32 | 0.53 | 0.31 | 0.04 | 0.00 | 0.38 | 0.46 | 0.26 | 0.20 | 0.73 | |||||||||||||
1968 | 0.22 | 0.52 | 0.36 | 0.05 | 0.23 | 0.48 | 0.17 | 0.23 | 0.23 | 0.56 | 0.68 | 0.49 | 0.68 | |||||||||||||
1969 | 0.63 | 0.22 | 0.10 | 0.95 | 0.41 | 0.40 | 0.06 | 0.00 | 0.31 | 0.36 | 0.43 | 0.68 | 0.95 | |||||||||||||
1970 | 0.96 | 0.63 | 0.50 | 0.33 | 0.21 | 0.24 | 0.04 | 0.00 | 0.58 | 0.36 | 0.32 | 0.39 | 0.96 | |||||||||||||
1971 | 0.46 | 0.29 | 0.24 | 0.47 | 0.70 | 1.21 | 0.61 | 0.22 | 0.97 | 0.57 | 0.86 | 1.33 | 1.33 | |||||||||||||
1972 | 0.41 | 0.26 | 0.91 | 0.33 | 0.58 | 0.31 | 0.42 | 0.14 | 0.32 | 0.47 | 0.26 | 0.51 | 0.91 | |||||||||||||
1973 | 0.13 | 0.40 | 0.43 | 0.27 | 0.38 | 0.10 | 0.00 | 0.07 | 0.43 | 0.25 | ----- | z | ----- | z | ----- | z | ||||||||||
1974 | 0.28 | 0.31 | 0.37 | 0.89 | 0.12 | 0.24 | 0.89 | 0.00 | 0.02 | 0.35 | 0.44 | 0.32 | 0.89 | |||||||||||||
1975 | 1.03 | 0.47 | 0.23 | 0.54 | 0.29 | 0.18 | 0.02 | 0.43 | 0.00 | 0.50 | 0.32 | 0.57 | 1.03 | |||||||||||||
1976 | 0.55 | 0.38 | 0.36 | 0.52 | 0.34 | 0.19 | 0.02 | 0.60 | 0.16 | 0.25 | 0.23 | 0.32 | 0.60 | |||||||||||||
1977 | 0.42 | 0.28 | 0.35 | 0.22 | 0.24 | 0.19 | 0.12 | 0.71 | 0.41 | 0.17 | 0.44 | 0.52 | 0.71 | |||||||||||||
1978 | 0.46 | 0.34 | 0.45 | 1.02 | 0.39 | 0.39 | 0.37 | 0.63 | 0.53 | 0.00 | 0.41 | 0.99 | 1.02 | |||||||||||||
1979 | 0.22 | 0.27 | 0.57 | 0.32 | 0.51 | 0.10 | 0.06 | 1.48 | 0.14 | 1.10 | 0.58 | 0.25 | 1.48 | |||||||||||||
1980 | 0.68 | 0.31 | 0.66 | 0.66 | 0.81 | 0.38 | 0.17 | 0.10 | 0.94 | 1.61 | 0.33 | 0.35 | 1.61 | |||||||||||||
1981 | 0.35 | 0.65 | 0.45 | 0.41 | 0.53 | 0.75 | 0.22 | 0.01 | 0.79 | 0.46 | 0.99 | 1.03 | 1.03 | |||||||||||||
1982 | 0.80 | 0.32 | 0.71 | 0.57 | 0.28 | 0.50 | 0.60 | 0.16 | 0.45 | 1.11 | 0.26 | 0.48 | 1.11 | |||||||||||||
1983 | 0.41 | 0.61 | 1.14 | 0.47 | 0.77 | 0.56 | 0.45 | 0.40 | 0.39 | 0.51 | 0.54 | 0.53 | 1.14 | |||||||||||||
1984 | 0.34 | a | 0.54 | 0.75 | 0.63 | 0.63 | 0.49 | 0.04 | 0.41 | 0.34 | 0.51 | a | 0.80 | 0.56 | 0.80 | b | ||||||||||
1985 | 0.37 | 0.38 | 0.29 | 0.30 | 0.39 | 0.35 | 0.03 | 0.42 | 0.25 | 0.71 | 0.49 | 0.62 | a | 0.71 | a | |||||||||||
1986 | 0.41 | 0.71 | 0.32 | a | 0.16 | 0.93 | 0.05 | 0.38 | 0.11 | 0.49 | 0.47 | 0.80 | 0.29 | 0.93 | a | |||||||||||
1987 | 0.39 | 0.28 | 0.83 | 0.44 | 0.35 | 0.14 | 0.12 | a | 0.03 | 0.04 | 0.00 | 0.37 | 0.38 | 0.83 | a | |||||||||||
1988 | 0.61 | 0.16 | 0.36 | 0.73 | 1.02 | 0.25 | 0.00 | 0.00 | 0.19 | 0.08 | 0.57 | 0.35 | 1.02 | |||||||||||||
1989 | 1.06 | 0.55 | 0.48 | 0.91 | 1.10 | 0.18 | 0.12 | 0.64 | 0.24 | 0.48 | 0.58 | 0.24 | 1.10 | |||||||||||||
1990 | 0.29 | ----- | z | 0.68 | 0.92 | 0.64 | 0.42 | 0.24 | 0.53 | 0.00 | 0.46 | 0.73 | 0.30 | ----- | z | |||||||||||
1991 | 0.46 | 0.31 | 0.39 | 0.32 | 1.57 | 0.79 | 0.15 | 0.17 | 0.03 | 0.28 | 1.04 | 0.39 | 1.57 | |||||||||||||
1992 | 0.35 | 0.34 | 0.60 | 0.36 | 0.16 | 0.55 | 0.73 | 0.51 | 0.46 | 0.52 | 0.81 | 0.25 | 0.81 | |||||||||||||
1993 | 0.39 | 0.42 | 0.44 | 0.51 | 0.63 | 0.54 | 0.18 | 1.84 | 0.00 | 0.11 | 0.29 | 0.74 | 1.84 | |||||||||||||
1994 | 0.89 | 0.84 | 0.25 | a | 0.36 | 1.17 | 0.27 | 0.32 | 0.07 | 0.38 | 0.64 | 1.38 | 0.46 | 1.38 | a | |||||||||||
1995 | 0.83 | 0.34 | 1.08 | 0.71 | 0.48 | 0.42 | 0.18 | 0.33 | 0.58 | 0.66 | 1.13 | 0.46 | 1.13 | |||||||||||||
1996 | 0.56 | a | 0.55 | 0.85 | o | 0.49 | 0.46 | 0.19 | 0.00 | 0.03 | 0.41 | 0.38 | 1.46 | 0.58 | 1.46 | p | ||||||||||
1997 | 0.95 | 0.78 | 0.88 | 0.58 | 0.14 | 0.52 | 0.17 | 0.02 | 0.24 | 0.34 | 0.85 | 0.38 | b | 0.95 | b | |||||||||||
1998 | 0.48 | 0.32 | 0.40 | 0.70 | 0.93 | 0.26 | 0.08 | 0.07 | 0.43 | 0.17 | 1.31 | 0.66 | 1.31 | |||||||||||||
1999 | 0.37 | 0.40 | 0.32 | 0.42 | 0.41 | 0.54 | 0.03 | 0.30 | 0.00 | 0.77 | 0.55 | 0.81 | a | 0.81 | a | |||||||||||
2000 | 0.62 | 0.91 | 0.73 | 0.18 | 0.91 | 0.38 | 0.31 | 0.00 | 0.56 | 1.45 | 1.00 | 0.18 | 1.45 | |||||||||||||
2001 | 0.37 | 0.29 | 0.27 | 0.73 | 0.42 | 0.55 | 0.20 | a | 0.00 | 0.26 | 0.63 | 0.53 | 0.18 | 0.73 | a | |||||||||||
2002 | 0.31 | 0.53 | 0.34 | 0.37 | 0.39 | 0.44 | 0.13 | 0.00 | 0.16 | 0.47 | 0.30 | 0.76 | 0.76 | |||||||||||||
2003 | 0.63 | 0.81 | 0.49 | 0.32 | 0.29 | 0.00 | 0.00 | 0.17 | 0.38 | 0.23 | 0.72 | 0.60 | 0.81 | |||||||||||||
2004 | 0.83 | 0.51 | 0.32 | 0.51 | 0.76 | 0.54 | 0.12 | 0.41 | 0.21 | 0.24 | 1.05 | 0.22 | 1.05 | |||||||||||||
2005 | 0.14 | 0.17 | 0.51 | 0.42 | 0.53 | 0.15 | 0.12 | 0.01 | 0.06 | 0.47 | 0.44 | 0.55 | 0.55 | |||||||||||||
2006 | 0.60 | 0.21 | 0.60 | 0.96 | 0.68 | 0.77 | 0.08 | 0.00 | 0.43 | 0.33 | 0.61 | 0.50 | 0.96 | |||||||||||||
2007 | 0.28 | 0.38 | 0.51 | 0.28 | a | 0.40 | 0.47 | 0.29 | 0.32 | 0.14 | 0.46 | 0.68 | 0.76 | 0.76 | a | |||||||||||
2008 | 0.72 | 0.22 | 0.33 | 0.14 | 0.51 | 0.58 | 0.11 | 0.25 | 0.07 | a | 0.07 | c | 0.42 | 0.70 | 0.72 | d | ||||||||||
2009 | 0.53 | 0.58 | 0.86 | 0.73 | 0.32 | 0.51 | x | 0.00 | 1.15 | f | 0.00 | 0.68 | ----- | z | 0.10 | p | ----- | z | ||||||||
2010 | 0.32 | i | 0.22 | 0.46 | 0.93 | 0.83 | 0.97 | 0.01 | 0.13 | f | 0.32 | 0.58 | 0.35 | 1.02 | 1.02 | o | ||||||||||
2011 | 0.41 | 0.47 | 0.70 | 0.40 | 1.09 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
2012 | 0.63 | 0.43 | 0.62 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.58 | ----- | z | |||
2013 | 0.47 | 0.26 | 0.26 | 0.38 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
2014 | ----- | z | ----- | z | 0.65 | 0.47 | 0.32 | 0.33 | 0.24 | 0.15 | 0.19 | 0.17 | 0.38 | 0.85 | ----- | z | ||||||||||
2015 | 0.45 | a | 0.28 | m | 0.24 | l | 0.10 | c | 1.56 | f | 0.17 | h | 0.00 | g | 0.15 | 0.42 | 0.18 | 0.45 | 0.73 | ----- | z | |||||
2016 | 0.43 | 0.29 | 0.55 | a | 0.25 | 0.87 | 0.15 | a | 1.14 | 0.12 | 0.38 | 0.73 | 0.33 | 0.47 | 1.14 | b | ||||||||||
2017 | 0.34 | 0.53 | 0.45 | 0.47 | 0.26 | 0.62 | 0.00 | 0.01 | 0.67 | 0.49 | 0.37 | 0.23 | b | 0.67 | b | |||||||||||
2018 | 0.45 | b | 0.35 | 0.53 | 0.59 | 0.95 | 0.17 | 0.00 | 0.20 | 0.01 | 0.57 | 0.26 | 0.67 | 0.95 | b | |||||||||||
2019 | 0.58 | 0.35 | 0.91 | 0.56 | 0.82 | 0.23 | 0.05 | 0.73 | 0.31 | 0.34 | 0.18 | 0.28 | 0.91 | |||||||||||||
2020 | 0.36 | 0.92 | 0.26 | 0.08 | 1.43 | 0.41 | 0.08 | 0.05 | 0.18 | 0.51 | 1.11 | 0.42 | 1.43 | |||||||||||||
2021 | 0.27 | 0.40 | 0.40 | 0.38 | 0.21 | 0.13 | 0.02 | h | 0.04 | d | 0.35 | 0.48 | 0.59 | f | 1.01 | k | ----- | z | ||||||||
2022 | 0.18 | p | 0.18 | n | 0.38 | o | 0.45 | f | 1.86 | l | 0.75 | k | 0.12 | o | 0.63 | i | 0.09 | o | 1.20 | u | 1.31 | q | ----- | z | ----- | z |
2023 | 0.34 | t | ----- | z | 0.44 | s | 0.61 | x | 0.11 | o | ----- | z | 0.00 | q | 0.23 | p | 0.78 | p | 0.72 | x | 1.41 | r | 0.86 | w | ----- | z |
2024 | 0.77 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.50 | 0.43 | 0.49 | 0.49 | 0.54 | 0.45 | 0.19 | 0.24 | 0.31 | 0.47 | 0.57 | 0.53 | 0.98 | |||||||||||||
S.D. | 0.21 | 0.21 | 0.22 | 0.26 | 0.31 | 0.30 | 0.23 | 0.32 | 0.22 | 0.29 | 0.31 | 0.26 | 0.29 | |||||||||||||
SKEW | 0.88 | 0.66 | 0.81 | 0.57 | 1.00 | 1.24 | 1.94 | 2.85 | 0.71 | 1.45 | 0.95 | 0.71 | 1.01 | |||||||||||||
MAX | 1.06 | 0.92 | 1.14 | 1.20 | 1.57 | 1.55 | 1.14 | 1.84 | 0.97 | 1.61 | 1.46 | 1.33 | 1.84 | |||||||||||||
MIN | 0.13 | 0.11 | 0.10 | 0.05 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.14 | 0.55 | |||||||||||||
YRS | 73 | 71 | 74 | 73 | 71 | 68 | 69 | 69 | 71 | 72 | 68 | 71 | 57 |