YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.17 | a | 0.31 | ----- | z | |
1957 | 0.00 | 0.24 | 0.24 | 0.61 | 0.68 | 0.23 | 0.14 | 0.00 | 0.00 | 0.40 | c | 0.84 | 0.36 | 0.84 | c | |||||||||||
1958 | 0.14 | 0.46 | 0.45 | 0.30 | 0.10 | 1.21 | 0.02 | f | 0.00 | f | 0.00 | b | 0.08 | 0.11 | 0.20 | 1.21 | n | |||||||||
1959 | 0.38 | 0.20 | 0.07 | 0.07 | 0.36 | b | 0.05 | 0.02 | 0.36 | 0.49 | 0.33 | 0.00 | 0.67 | 0.67 | b | |||||||||||
1960 | 0.20 | 0.56 | 0.36 | 0.24 | 0.29 | 0.00 | 0.50 | 0.08 | 0.33 | 0.04 | 1.25 | 0.58 | 1.25 | |||||||||||||
1961 | 0.14 | 0.40 | 0.28 | 0.15 | 0.36 | 0.73 | 0.26 | 1.65 | 0.86 | 0.19 | 0.22 | 0.30 | 1.65 | |||||||||||||
1962 | 0.42 | 0.55 | 0.60 | 0.00 | 0.30 | f | 0.08 | 0.00 | 0.25 | 0.06 | ----- | z | 0.36 | 0.36 | m | ----- | z | |||||||||
1963 | 1.30 | b | 0.42 | 0.43 | 0.32 | 0.53 | 0.66 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | 0.14 | 0.06 | 0.05 | 0.02 | 0.27 | ----- | z | 0.55 | 0.86 | ----- | z | |||||||
1967 | 1.25 | b | 0.35 | 0.50 | ----- | z | 0.25 | 0.38 | 0.30 | ----- | z | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | |||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | g | 0.04 | 0.24 | 0.00 | 0.30 | 0.50 | 0.40 | ----- | z | ||||||
1969 | 0.88 | 0.60 | 0.05 | 0.78 | 0.70 | 0.27 | 0.19 | 0.00 | 0.00 | 0.29 | 0.15 | 0.40 | 0.88 | |||||||||||||
1970 | 0.75 | 0.20 | 0.17 | 0.40 | ----- | z | 0.63 | 0.20 | 0.19 | 0.18 | 0.15 | ----- | z | 0.45 | ----- | z | ||||||||||
1971 | 0.30 | 0.02 | 0.23 | 0.16 | 1.14 | 1.27 | 0.00 | 0.05 | 0.44 | 0.35 | 0.27 | 0.60 | 1.27 | |||||||||||||
1972 | 0.12 | 0.32 | 0.35 | 0.20 | 0.00 | 0.45 | 0.01 | 0.00 | 0.25 | i | 0.10 | 0.76 | ----- | z | ----- | z | ||||||||||
1973 | 1.11 | h | 0.02 | 0.09 | 0.80 | ----- | z | ----- | z | 0.02 | 0.22 | ----- | z | ----- | z | 0.29 | 0.50 | c | ----- | z | ||||||
1974 | 0.26 | a | 0.40 | 0.25 | 0.62 | 0.15 | 0.00 | 0.54 | 0.15 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
1975 | ----- | z | ----- | z | ----- | z | 0.02 | n | 0.17 | 0.36 | 0.05 | 0.41 | a | ----- | z | 0.36 | ----- | z | 0.17 | l | ----- | z | ||||
1976 | 0.31 | 0.80 | 0.29 | 0.13 | 0.32 | 0.78 | 0.21 | 0.90 | 0.85 | 0.13 | ----- | z | 0.00 | ----- | z | |||||||||||
1977 | 0.69 | b | 0.14 | 0.08 | 0.05 | 0.46 | 0.34 | 0.09 | 0.22 | 0.13 | 0.14 | 0.62 | b | 0.67 | 0.69 | d | ||||||||||
1978 | 0.52 | 0.47 | ----- | z | 0.67 | 0.03 | 0.19 | 0.07 | 0.01 | 0.68 | 0.01 | 0.60 | 0.05 | ----- | z | |||||||||||
1979 | 0.80 | 0.40 | 0.56 | 0.12 | 0.20 | 0.13 | a | 0.21 | ----- | z | 0.07 | 0.25 | 0.91 | c | 0.49 | ----- | z | |||||||||
1980 | 1.10 | j | 0.90 | d | 0.24 | 0.32 | 0.23 | 0.22 | 0.35 | 0.00 | 0.25 | 0.13 | ----- | z | 0.52 | p | ----- | z | ||||||||
1981 | 0.26 | 0.08 | 0.29 | 0.10 | 0.35 | 0.29 | 0.28 | 0.04 | 0.15 | 0.41 | 0.49 | 0.66 | b | 0.66 | b | |||||||||||
1982 | 0.24 | b | 0.22 | a | 0.16 | 0.27 | t | 0.01 | 0.58 | 0.40 | ----- | z | 0.28 | 0.35 | 0.74 | f | 1.30 | n | ----- | z | ||||||
1983 | 0.43 | 0.18 | 0.40 | b | 1.50 | f | 0.39 | 0.49 | 0.13 | 0.50 | a | 0.32 | 0.14 | 0.42 | b | 0.72 | a | 1.50 | l | |||||||
1984 | 0.12 | 0.24 | 0.55 | 0.20 | 0.33 | 0.32 | ----- | z | 0.03 | 0.18 | 0.26 | 0.50 | f | 0.07 | a | ----- | z | |||||||||
1985 | 0.04 | 0.26 | 0.20 | a | 0.09 | 0.42 | 0.00 | 0.36 | 0.00 | 0.81 | b | 0.18 | 0.42 | d | 0.98 | n | 0.98 | u | ||||||||
1986 | 0.16 | 0.62 | 0.71 | 0.73 | 0.17 | 0.07 | a | ----- | z | 0.03 | 0.44 | 0.06 | 0.22 | 0.20 | d | ----- | z | |||||||||
1987 | 0.40 | 0.47 | 0.18 | 0.33 | 0.59 | 0.59 | 0.09 | 0.06 | 0.00 | 0.42 | 0.26 | 0.30 | 0.59 | |||||||||||||
1988 | 0.40 | 0.01 | 0.09 | 0.42 | 0.06 | 0.38 | a | 0.01 | 0.11 | 0.46 | 0.00 | 0.75 | h | 0.42 | 0.75 | i | ||||||||||
1989 | 0.48 | a | 0.19 | 0.55 | 0.13 | 0.75 | 0.03 | b | 0.00 | 0.13 | 0.42 | 0.45 | 0.59 | 0.06 | 0.75 | c | ||||||||||
1990 | 0.18 | 0.27 | 0.10 | b | 0.52 | a | 0.24 | 0.00 | 0.06 | 0.44 | 0.10 | 0.13 | a | 0.06 | 0.22 | 0.52 | d | |||||||||
1991 | 0.31 | a | 0.17 | 0.50 | 0.45 | 0.51 | 1.49 | b | 0.00 | 0.20 | 0.33 | 0.53 | 0.17 | 0.20 | a | 1.49 | d | |||||||||
1992 | 0.03 | 0.23 | 0.25 | 0.10 | 0.00 | 0.30 | 0.27 | 0.00 | a | 0.00 | 0.26 | 0.12 | 0.45 | 0.45 | a | |||||||||||
1993 | 0.55 | 0.30 | 0.38 | 0.19 | 0.10 | 0.85 | 0.19 | 0.07 | 0.15 | 0.55 | 0.07 | 0.19 | 0.85 | |||||||||||||
1994 | 0.09 | 0.36 | 0.32 | a | 0.45 | a | 0.45 | 0.08 | 0.00 | 0.00 | 0.09 | 0.00 | 0.57 | a | 0.94 | c | 0.94 | f | ||||||||
1995 | 0.67 | 0.00 | b | 0.40 | ----- | z | 0.48 | 0.62 | 0.17 | 0.00 | 0.04 | 0.00 | 0.25 | 1.08 | ----- | z | ||||||||||
1996 | 0.52 | a | 0.80 | 0.58 | 0.66 | 0.61 | 0.42 | 0.01 | 0.08 | b | 0.10 | 0.42 | a | 0.23 | 0.35 | 0.80 | d | |||||||||
1997 | 0.70 | 0.07 | 0.21 | 0.42 | ----- | z | 0.80 | 0.22 | 0.02 | 0.50 | 0.14 | 0.19 | 0.31 | ----- | z | |||||||||||
1998 | 0.44 | 0.36 | 0.43 | a | 0.44 | 0.90 | c | ----- | z | 0.07 | 0.01 | 0.60 | 0.50 | 0.52 | 0.22 | b | ----- | z | ||||||||
1999 | 0.39 | 0.73 | a | 0.05 | 0.13 | a | 0.45 | 0.56 | b | 0.00 | 0.06 | 0.03 | 0.31 | 0.32 | 0.08 | 0.73 | d | |||||||||
2000 | 0.58 | 0.61 | 0.51 | 0.54 | 0.40 | 0.10 | 0.03 | 0.00 | 0.15 | 1.14 | 0.12 | 0.30 | b | 1.14 | b | |||||||||||
2001 | 0.20 | 0.20 | 0.20 | 0.10 | b | 0.45 | 0.01 | 0.34 | 0.05 | 0.19 | 0.10 | 0.66 | 0.57 | c | 0.66 | e | ||||||||||
2002 | 0.53 | 0.36 | 0.09 | c | 0.18 | 0.50 | a | 0.17 | b | 0.19 | 0.23 | a | ----- | z | 0.16 | a | 0.50 | 0.15 | b | ----- | z | |||||
2003 | 0.19 | 0.13 | 0.50 | 0.60 | d | ----- | z | 0.00 | 0.95 | 0.20 | 0.00 | 0.00 | ----- | z | 0.75 | a | ----- | z | ||||||||
2004 | ----- | z | 0.33 | b | 0.32 | 0.20 | 0.61 | b | 0.32 | 0.06 | ----- | z | 0.27 | 0.55 | a | 0.26 | b | 0.40 | c | ----- | z | |||||
2005 | 0.21 | d | 0.19 | a | 0.62 | 0.75 | a | 0.98 | 0.09 | 0.08 | 0.00 | 0.08 | ----- | z | 0.65 | b | 0.83 | x | ----- | z | ||||||
2006 | 0.23 | d | 0.68 | 0.30 | b | 1.06 | a | 0.58 | 0.01 | 0.00 | ----- | z | 0.00 | i | 0.15 | 0.31 | a | 0.25 | ----- | z | ||||||
2007 | 0.02 | ----- | z | 0.01 | a | 0.25 | 0.09 | 0.26 | 0.00 | 0.02 | 0.99 | 0.25 | 0.17 | 0.22 | b | ----- | z | |||||||||
2008 | 0.60 | y | 0.48 | 0.07 | a | 0.23 | 0.39 | 0.00 | 0.00 | 0.16 | a | ----- | z | 0.10 | 0.25 | 0.33 | ----- | z | ||||||||
2009 | 0.15 | g | 0.26 | a | 0.17 | a | 0.34 | b | 0.98 | d | 0.48 | a | 0.00 | ----- | z | 0.05 | 0.20 | 0.09 | c | 0.43 | g | ----- | z | |||
2010 | 0.45 | b | 0.39 | d | 0.43 | d | ----- | z | 0.35 | a | 0.28 | a | 0.21 | a | 0.14 | c | 0.17 | d | 1.14 | f | 0.17 | d | 0.55 | c | ----- | z |
2011 | 0.29 | a | 0.33 | b | 0.40 | a | 0.47 | 1.52 | b | ----- | z | ----- | z | 0.00 | a | 0.00 | a | 0.21 | b | 0.11 | d | ----- | z | ----- | z | |
2012 | 0.40 | a | 0.01 | d | 0.20 | b | 0.05 | a | ----- | z | 0.50 | 0.10 | 0.00 | a | 0.27 | a | 0.33 | a | 0.25 | a | 0.30 | a | ----- | z | ||
2013 | 0.26 | a | 0.05 | 0.00 | 0.06 | 0.55 | 0.00 | a | 0.56 | d | 0.32 | a | 0.25 | 0.66 | a | 0.03 | 0.00 | 0.66 | h | |||||||
2014 | 0.32 | 0.15 | 0.52 | 0.31 | 0.11 | 0.10 | 0.59 | 0.13 | 1.12 | 0.10 | 0.55 | 1.73 | a | 1.73 | a | |||||||||||
2015 | 0.43 | a | 0.29 | 0.11 | 0.41 | 0.83 | 0.00 | 0.60 | 0.04 | 0.00 | 1.15 | 0.30 | 0.50 | 1.15 | a | |||||||||||
2016 | 0.80 | 0.13 | 0.30 | 0.40 | 0.68 | 0.11 | 0.00 | 0.00 | 0.06 | 0.42 | 0.10 | 0.87 | 0.87 | |||||||||||||
2017 | 1.55 | 0.56 | 0.35 | 0.50 | 0.40 | 0.52 | 0.22 | 0.09 | 0.00 | 0.32 | 0.32 | a | 0.08 | 1.55 | a | |||||||||||
2018 | 0.11 | 0.35 | 0.43 | 0.40 | 0.40 | 0.29 | 0.10 | 0.00 | 0.00 | 0.40 | 0.55 | 0.76 | 0.76 | |||||||||||||
2019 | 0.40 | 0.53 | 0.23 | 1.00 | 0.40 | 0.15 | 0.12 | 0.05 | 0.43 | 0.10 | 0.37 | m | 0.66 | h | 1.00 | u | ||||||||||
2020 | 0.25 | m | 0.00 | 0.58 | a | 0.00 | 0.41 | 0.65 | e | 0.00 | f | 0.00 | j | 0.00 | a | 0.01 | a | 0.61 | s | 0.25 | f | ----- | z | |||
2021 | 0.20 | e | 0.10 | f | 0.00 | o | 0.05 | e | 0.55 | d | 0.21 | 0.00 | 0.10 | 0.22 | 0.80 | d | 0.18 | 0.30 | b | ----- | z | |||||
2022 | 0.20 | 0.00 | 0.00 | 0.19 | 0.00 | a | 0.00 | u | 0.00 | e | ----- | z | 0.00 | j | 0.00 | k | 0.00 | d | 0.35 | n | ----- | z | ||||
2023 | 0.15 | w | 0.00 | t | ----- | z | 0.00 | s | 0.35 | o | ----- | z | 0.00 | 0.30 | 0.65 | 0.40 | 0.25 | 0.40 | ----- | z | ||||||
2024 | 1.00 | 0.27 | 0.25 | 0.65 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.42 | 0.32 | 0.30 | 0.35 | 0.42 | 0.34 | 0.16 | 0.15 | 0.26 | 0.28 | 0.35 | 0.43 | 0.97 | |||||||||||||
S.D. | 0.32 | 0.22 | 0.18 | 0.25 | 0.30 | 0.33 | 0.20 | 0.26 | 0.28 | 0.25 | 0.26 | 0.31 | 0.38 | |||||||||||||
SKEW | 1.48 | 0.56 | 0.18 | 0.82 | 1.09 | 1.36 | 1.71 | 3.89 | 1.28 | 1.63 | 1.15 | 1.59 | 0.69 | |||||||||||||
MAX | 1.55 | 0.90 | 0.71 | 1.06 | 1.52 | 1.49 | 0.95 | 1.65 | 1.12 | 1.15 | 1.25 | 1.73 | 1.73 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.45 | |||||||||||||
YRS | 56 | 60 | 60 | 56 | 57 | 59 | 59 | 55 | 56 | 57 | 53 | 51 | 22 |