YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | 0.09 | f | 0.71 | 0.61 | 1.07 | 0.63 | 0.08 | 0.19 | 1.79 | 0.04 | 0.32 | 5.44 | c | |||||||||
1957 | ----- | z | ----- | z | 0.96 | c | 0.43 | c | 1.14 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.53 | i |
1958 | ----- | z | ----- | z | ----- | z | 0.62 | 1.09 | 1.90 | 1.10 | 0.42 | 0.69 | 0.38 | 0.96 | 0.15 | 7.31 | c | |||||||||
1959 | 0.50 | 1.89 | 0.67 | 0.26 | 2.11 | 0.00 | 0.00 | 0.00 | 0.92 | 0.15 | 0.00 | 0.36 | 6.86 | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | 0.57 | g | 3.36 | 0.10 | 0.15 | 0.98 | ----- | z | 0.40 | 0.15 | 5.14 | f | ||||||
1964 | 0.54 | 0.00 | b | 0.08 | 0.14 | 0.31 | 2.82 | 0.42 | 0.40 | 0.77 | 0.00 | 0.68 | 5.81 | 11.97 | ||||||||||||
1965 | 1.10 | 0.00 | 0.00 | 0.06 | 1.43 | 1.79 | 0.00 | 2.07 | 0.00 | 0.00 | 0.92 | 0.42 | e | 7.79 | ||||||||||||
1966 | 0.31 | 0.48 | 0.06 | 0.45 | 0.74 | 0.95 | 0.28 | 0.00 | 0.74 | 0.00 | 2.43 | 1.22 | a | 7.66 | ||||||||||||
1967 | 2.43 | b | 0.19 | 0.68 | 0.90 | 0.56 | 0.71 | 0.30 | 0.23 | 0.29 | 0.37 | 0.50 | 0.81 | 7.97 | ||||||||||||
1968 | 0.72 | 0.23 | 0.20 | 0.08 | 0.66 | 1.01 | 0.00 | 2.17 | 0.02 | 0.44 | 1.18 | 0.87 | 7.58 | |||||||||||||
1969 | 3.32 | 0.46 | 0.49 | 0.09 | c | 0.31 | 2.32 | 0.13 | a | 0.00 | 0.16 | 1.29 | 0.57 | 1.65 | 10.79 | |||||||||||
1970 | 2.38 | 0.90 | 0.67 | 0.56 | 0.20 | 1.60 | 0.00 | 0.00 | 0.31 | 0.41 | 2.92 | 1.30 | 11.25 | |||||||||||||
1971 | 0.63 | d | 0.14 | 1.90 | c | 0.41 | 3.06 | 1.00 | 0.32 | 0.11 | 1.97 | 0.28 | 1.01 | 1.60 | 12.43 | |||||||||||
1972 | 1.74 | 1.65 | 0.15 | 0.46 | 0.47 | 0.28 | 0.00 | 0.07 | 0.39 | 0.62 | 1.52 | 1.09 | 8.44 | |||||||||||||
1973 | 1.20 | 0.90 | 0.90 | 0.69 | 0.65 | 0.03 | 0.92 | 0.00 | 1.05 | 0.78 | a | 2.54 | 1.29 | 10.95 | ||||||||||||
1974 | 1.12 | 0.39 | 2.57 | 0.88 | 0.26 | 0.05 | 0.32 | 0.45 | 0.00 | 0.33 | 0.15 | 0.82 | 7.34 | |||||||||||||
1975 | 0.56 | 2.38 | b | 0.86 | 0.92 | 0.14 | 1.95 | 0.37 | 0.08 | 0.00 | 1.62 | 0.25 | 0.59 | 9.72 | ||||||||||||
1976 | 0.47 | 1.11 | 1.07 | 0.24 | 0.27 | 0.65 | 1.20 | 1.56 | 0.26 | 0.15 | 0.14 | 0.00 | 7.12 | |||||||||||||
1977 | 1.28 | 0.31 | 0.39 | 0.04 | 3.04 | 1.95 | 0.40 | 0.63 | 2.02 | ----- | z | ----- | z | ----- | z | 10.06 | c | |||||||||
1978 | 1.41 | 0.94 | i | 1.66 | 3.23 | 0.48 | 0.33 | 0.49 | 0.31 | 0.48 | 0.00 | 0.87 | 0.42 | 9.68 | a | |||||||||||
1979 | 1.83 | 1.72 | 0.60 | 0.75 | 0.60 | 0.89 | 0.00 | 2.76 | 0.10 | 1.86 | 1.71 | 1.31 | 14.13 | |||||||||||||
1980 | 2.70 | 1.76 | 0.63 | 0.85 | 0.95 | 1.02 | 0.23 | 0.04 | 0.94 | 0.80 | 0.48 | 0.88 | 11.28 | |||||||||||||
1981 | 1.09 | 0.82 | 1.29 | 0.91 | 1.10 | 0.76 | 0.09 | 0.00 | 0.30 | 1.33 | 3.32 | 3.09 | 14.10 | |||||||||||||
1982 | 0.78 | a | 0.42 | 1.42 | 0.63 | 0.75 | 0.92 | 0.76 | a | 0.45 | 1.66 | 0.08 | x | 1.71 | 1.33 | 10.83 | a | |||||||||
1983 | 0.94 | 2.50 | 3.65 | 1.93 | 1.22 | 0.33 | 0.03 | 1.10 | l | 0.13 | 0.22 | 1.91 | 3.06 | u | 12.86 | b | ||||||||||
1984 | 0.07 | ----- | z | ----- | z | 0.56 | 0.73 | 0.55 | 0.00 | 0.45 | 0.22 | 0.85 | ----- | z | ----- | z | 3.43 | d | ||||||||
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.06 | 0.07 | 0.02 | 1.89 | 0.18 | ----- | z | 0.27 | a | 2.49 | f | |||||
1986 | 0.53 | a | 4.86 | ----- | z | ----- | z | 0.05 | n | 0.00 | 0.00 | ----- | z | ----- | z | 0.27 | o | 0.40 | 0.34 | 6.13 | f | |||||
1987 | 0.38 | 0.93 | 0.49 | 1.28 | 0.91 | 2.13 | 1.81 | 0.00 | 0.00 | 0.05 | 0.55 | 2.11 | c | 10.64 | ||||||||||||
1988 | 1.17 | a | 0.25 | 0.48 | a | 3.16 | 0.36 | 0.39 | 1.28 | 0.41 | 0.47 | 0.00 | 3.07 | 0.06 | g | 11.04 | a | |||||||||
1989 | 0.00 | e | 0.63 | 1.68 | 1.16 | 0.73 | 0.02 | 0.00 | 0.51 | 0.51 | 0.28 | 0.30 | 0.27 | a | 6.09 | |||||||||||
1990 | 1.64 | 1.21 | 0.51 | 1.33 | 1.08 | 0.12 | 1.75 | 1.30 | 0.15 | 0.38 | 0.20 | 0.36 | 10.03 | |||||||||||||
1991 | 0.27 | ----- | z | ----- | z | 0.50 | 2.52 | a | ----- | z | ----- | z | ----- | z | ----- | z | 0.56 | a | 0.93 | 0.41 | 5.19 | f | ||||
1992 | 0.04 | ----- | z | 0.00 | e | 0.08 | d | ----- | z | 1.10 | e | 0.00 | b | 0.00 | 0.00 | 0.50 | y | 0.84 | a | 0.00 | x | 2.06 | d | |||
1993 | ----- | z | 0.00 | y | 0.25 | b | 1.87 | f | 0.61 | f | 1.86 | a | 0.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.11 | j |
1994 | 0.00 | f | 0.00 | g | 0.00 | b | 0.00 | l | 0.35 | s | 0.46 | b | 0.00 | 0.00 | a | 0.00 | a | 0.00 | o | 0.00 | j | ----- | z | 0.46 | g | |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | v | ----- | z | 0.00 | 0.00 | b | 0.00 | b | ----- | z | ----- | z | 0.00 | i | |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | e | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | p | ----- | z | 0.00 | 0.00 | g | ||||
1998 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.25 | a | 0.00 | 1.25 | e | ||||||
1999 | 0.00 | 0.00 | 0.10 | 0.04 | ----- | z | 0.86 | a | 0.03 | c | 0.58 | 0.00 | 0.83 | 0.15 | a | 0.15 | 2.74 | a | ||||||||
2000 | 1.32 | b | 1.04 | a | 0.50 | 0.86 | 0.98 | 0.45 | ----- | z | 0.00 | 0.65 | 2.48 | 0.32 | a | 0.38 | 8.98 | a | ||||||||
2001 | 0.15 | 0.34 | 0.58 | 0.62 | 0.04 | 0.07 | 0.30 | e | 0.00 | x | 1.24 | n | 0.08 | f | 1.37 | f | 1.74 | h | 2.10 | e | ||||||
2002 | 0.57 | 0.51 | b | 0.15 | 0.35 | 0.33 | 0.62 | 0.00 | 0.00 | 0.10 | 0.25 | 1.12 | a | 0.54 | d | 4.54 | ||||||||||
2003 | 1.20 | 0.70 | 0.79 | 0.87 | 0.93 | 0.00 | ----- | z | ----- | z | 0.97 | d | 0.25 | 0.73 | a | 1.02 | b | 7.46 | b | |||||||
2004 | 0.64 | 0.99 | d | 0.31 | 1.71 | a | 1.31 | 0.46 | 0.00 | 0.52 | c | 0.05 | 1.74 | 0.27 | g | 1.65 | 9.38 | a | ||||||||
2005 | 0.76 | 0.28 | 0.68 | 1.28 | 3.43 | 0.52 | 0.00 | 0.00 | 0.16 | 0.53 | l | 2.12 | 3.24 | 12.47 | a | |||||||||||
2006 | 1.29 | 0.69 | 0.64 | 1.17 | j | ----- | z | 0.44 | 0.14 | c | ----- | z | ----- | z | 0.39 | 0.87 | l | 0.42 | 4.01 | e | ||||||
2007 | 0.26 | 0.86 | 0.18 | 0.52 | 0.27 | 0.77 | ----- | z | 0.00 | 0.64 | i | 0.96 | 0.33 | 0.32 | 4.47 | b | ||||||||||
2008 | 0.76 | 0.43 | 0.47 | 0.23 | 1.01 | e | 0.00 | 0.30 | 0.00 | 0.00 | 0.29 | 0.87 | c | 2.74 | a | 7.10 | ||||||||||
2009 | 1.55 | 0.45 | a | 0.67 | 1.62 | g | 0.79 | h | 4.90 | f | 0.00 | 0.00 | 0.00 | 0.90 | c | 0.42 | b | 0.37 | a | 4.36 | c | |||||
2010 | 1.02 | b | 0.37 | b | 0.93 | 1.47 | 1.49 | f | 0.43 | d | 0.05 | 0.15 | c | 0.75 | c | 2.04 | i | 1.23 | e | 1.82 | c | 8.22 | b | |||
2011 | 0.12 | b | 1.10 | 1.50 | 2.03 | h | 1.00 | n | ----- | z | 0.00 | o | 0.00 | w | 0.00 | o | 0.26 | m | 0.30 | c | 0.22 | c | 3.24 | g | ||
2012 | 0.41 | a | 0.52 | a | 0.88 | a | 0.87 | l | 1.19 | m | 0.12 | o | 0.00 | q | 0.00 | n | ----- | z | 0.43 | k | 1.73 | h | 2.35 | 4.16 | h | |
2013 | 0.23 | b | 0.09 | a | 0.13 | g | 0.65 | m | 1.23 | n | 0.00 | x | ----- | z | ----- | z | 1.70 | q | 0.36 | n | 0.18 | k | 0.07 | a | 0.39 | i |
2014 | 0.18 | b | 0.54 | a | 0.62 | k | 0.50 | k | 1.26 | o | 0.08 | o | 0.10 | m | 0.21 | r | ----- | z | ----- | z | ----- | z | 1.72 | 2.44 | i | |
2015 | 0.00 | a | 0.58 | e | 0.14 | n | 0.16 | o | 2.82 | l | 0.00 | m | 2.82 | j | 0.00 | t | 0.71 | m | 0.75 | n | 0.84 | h | 1.31 | c | 1.89 | i |
2016 | 0.08 | ----- | z | 1.23 | 0.22 | s | 3.76 | j | 0.27 | l | ----- | z | 0.00 | r | 0.00 | y | 0.70 | v | 0.35 | h | 1.00 | v | 1.31 | j | ||
2017 | 0.00 | w | 0.72 | a | 1.41 | a | 0.92 | k | 0.20 | l | ----- | z | 1.67 | w | 0.15 | l | 0.00 | o | 0.00 | n | 2.39 | i | 0.47 | b | 2.60 | i |
2018 | 0.00 | a | 0.08 | 1.37 | b | 0.51 | l | 2.71 | n | 0.75 | q | 0.00 | y | 0.00 | y | 0.00 | p | 1.04 | j | 0.80 | j | 1.16 | 2.61 | h | ||
2019 | 1.44 | 3.09 | a | 1.43 | a | 1.42 | p | 1.01 | n | 1.11 | x | ----- | z | ----- | z | ----- | z | 0.50 | l | 0.36 | p | 1.35 | e | 7.31 | h | |
2020 | 0.83 | f | 0.10 | e | 0.50 | g | 0.39 | h | 0.47 | o | 0.65 | o | 0.30 | q | 0.07 | y | ----- | z | ----- | z | ----- | z | ----- | z | 0.10 | k |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.25 | s | 0.02 | h | 0.17 | k | 0.17 | l | 0.14 | o | 0.79 | p | 2.03 | h | 0.00 | l |
2023 | 0.74 | h | 0.13 | h | 1.47 | f | 0.37 | j | 1.74 | k | 0.77 | q | 0.00 | p | 0.63 | s | 0.02 | s | 0.54 | j | 1.12 | p | 0.43 | f | 0.00 | l |
2024 | 0.43 | g | 1.09 | e | 1.02 | j | 0.31 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.09 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.86 | 0.85 | 0.79 | 0.77 | 0.92 | 0.87 | 0.32 | 0.38 | 0.47 | 0.61 | 1.01 | 1.03 | 9.35 | |||||||||||||
S.D. | 0.76 | 0.91 | 0.71 | 0.72 | 0.84 | 0.81 | 0.47 | 0.65 | 0.57 | 0.62 | 0.88 | 1.06 | 2.59 | |||||||||||||
SKEW | 1.13 | 2.33 | 1.71 | 1.87 | 1.60 | 1.16 | 1.81 | 2.29 | 1.42 | 1.27 | 1.14 | 2.22 | 0.21 | |||||||||||||
MAX | 3.32 | 4.86 | 3.65 | 3.23 | 3.43 | 3.36 | 1.81 | 2.76 | 2.02 | 2.48 | 3.32 | 5.81 | 14.13 | |||||||||||||
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 | 4.54 | |||||||||||||
YRS | 50 | 48 | 48 | 42 | 40 | 45 | 43 | 42 | 43 | 38 | 41 | 49 | 22 |