YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1954 | ----- | z | ----- | z | ----- | z | 1.07 | f | 1.15 | 1.48 | 2.17 | ----- | z | 1.30 | 1.18 | ----- | z | ----- | z | ----- | z | |||||
1955 | ----- | z | ----- | z | 0.43 | 1.31 | 0.62 | 0.48 | 1.30 | 0.00 | 0.80 | 0.75 | 0.35 | 0.17 | a | ----- | z | |||||||||
1956 | 0.17 | 0.36 | 0.58 | a | 1.20 | b | 1.55 | 0.55 | 0.48 | 0.72 | 1.70 | 0.90 | 1.52 | 0.22 | a | 1.70 | d | |||||||||
1957 | 0.10 | 0.00 | b | 0.97 | 1.00 | 1.56 | 1.03 | 1.04 | 0.90 | 0.30 | a | 0.54 | a | 0.97 | a | 0.44 | 1.56 | e | ||||||||
1958 | 0.20 | ----- | z | ----- | z | 1.65 | 0.27 | 1.00 | a | 1.12 | 1.30 | 0.98 | 1.00 | 1.00 | ----- | z | ----- | z | ||||||||
1959 | 0.20 | a | 1.27 | 1.80 | a | 0.98 | 0.94 | a | 2.50 | 1.09 | 2.50 | 1.42 | 1.30 | 1.15 | a | 0.63 | 2.50 | d | ||||||||
1960 | 0.53 | 0.35 | 0.09 | 2.10 | 1.87 | 1.57 | 2.52 | 1.80 | 1.10 | 1.40 | 0.95 | 0.00 | a | 2.52 | a | |||||||||||
1961 | 0.10 | 0.86 | 1.80 | 0.50 | 1.02 | 1.10 | 1.43 | 1.32 | 3.00 | 0.76 | 1.75 | 0.60 | 3.00 | |||||||||||||
1962 | 0.10 | 0.85 | 1.02 | 0.88 | 1.73 | 2.50 | 1.73 | 1.70 | 0.98 | 1.37 | 0.00 | 0.18 | 2.50 | |||||||||||||
1963 | 0.44 | 0.41 | 0.48 | 0.72 | 1.75 | 0.53 | 0.99 | 0.82 | 0.92 | 1.02 | 0.56 | ----- | z | ----- | z | |||||||||||
1964 | ----- | z | 0.00 | y | 0.45 | 0.69 | 1.66 | 1.90 | 0.40 | 1.90 | 0.83 | 0.15 | 0.51 | 0.75 | ----- | z | ||||||||||
1965 | 0.40 | 0.65 | 0.74 | 0.88 | 2.40 | 0.89 | 1.80 | 1.43 | 2.76 | 1.40 | 1.05 | 0.95 | 2.76 | |||||||||||||
1966 | 0.38 | 1.50 | 1.40 | 0.58 | 0.50 | 0.78 | 1.80 | 0.45 | 0.50 | 0.56 | 0.48 | 0.84 | 1.80 | |||||||||||||
1967 | 1.40 | 0.40 | 0.67 | 0.72 | 1.53 | 3.74 | 0.34 | 0.68 | 1.32 | 0.93 | 0.40 | 0.48 | 3.74 | |||||||||||||
1968 | 0.51 | 0.50 | 0.43 | ----- | z | 0.63 | 1.97 | 2.48 | 0.62 | 1.86 | 0.60 | 0.35 | 1.17 | ----- | z | |||||||||||
1969 | 0.70 | 0.20 | 0.36 | 1.16 | 1.43 | ----- | z | ----- | z | ----- | z | ----- | z | 1.25 | 0.40 | 0.64 | ----- | z | ||||||||
1970 | 0.19 | 0.10 | 0.45 | 0.97 | 0.78 | 1.23 | 2.17 | 0.29 | 1.40 | a | 0.82 | 0.63 | 1.12 | 2.17 | a | |||||||||||
1971 | 1.04 | 1.47 | 1.29 | 0.92 | 1.84 | 1.85 | 0.37 | 0.69 | 0.73 | 0.30 | 1.55 | ----- | z | ----- | z | |||||||||||
1972 | 0.20 | 0.30 | 0.70 | 1.05 | 1.01 | 0.33 | 1.29 | e | 0.70 | 1.40 | 1.86 | 0.67 | 0.85 | 1.86 | e | |||||||||||
1973 | 0.40 | 0.23 | 1.42 | 1.10 | 1.65 | 0.70 | 0.48 | ----- | z | 1.76 | k | 1.65 | 0.52 | c | ----- | z | ----- | z | ||||||||
1974 | 0.35 | v | 0.25 | 0.96 | l | 1.30 | 1.32 | 1.28 | 1.57 | m | 0.78 | 0.40 | 0.46 | 0.48 | 0.63 | ----- | z | |||||||||
1975 | 0.38 | 1.07 | 0.48 | 2.70 | 0.93 | 1.10 | 0.19 | 1.62 | 0.50 | 0.10 | 0.82 | ----- | z | ----- | z | |||||||||||
1976 | ----- | z | ----- | z | 0.83 | 1.23 | 1.04 | 0.45 | 0.90 | 0.79 | 0.58 | 0.51 | 0.04 | 0.20 | ----- | z | ||||||||||
1977 | ----- | z | ----- | z | ----- | z | 0.95 | e | 0.76 | 1.65 | 2.51 | 0.85 | 1.25 | 1.00 | 1.00 | ----- | z | ----- | z | |||||||
1978 | 0.45 | 0.15 | 0.20 | 1.40 | 2.45 | 4.02 | 3.89 | 0.60 | 1.90 | 0.73 | 1.10 | b | 0.20 | 4.02 | b | |||||||||||
1979 | 0.30 | b | 0.66 | 1.20 | 0.42 | 1.27 | 0.95 | 1.51 | 2.10 | 0.25 | 0.85 | 0.34 | 0.50 | 2.10 | b | |||||||||||
1980 | 0.75 | a | 0.15 | a | 0.30 | b | 0.72 | 0.75 | 1.10 | 1.70 | 3.79 | ----- | z | ----- | z | 0.55 | a | ----- | z | ----- | z | |||||
1981 | 0.03 | 1.10 | e | 0.35 | 3.72 | 0.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1982 | ----- | z | 0.10 | a | 0.60 | w | 1.15 | s | ----- | 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 | 1.35 | ----- | 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 | 1.65 | 1.10 | 3.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.93 | b | 3.02 | a | 0.22 | 1.65 | 0.69 | c | ----- | z | ||
1993 | 0.95 | d | 0.45 | 1.80 | a | 0.76 | 2.10 | b | 1.51 | c | 1.10 | 2.62 | 0.67 | 0.40 | 0.45 | 0.62 | a | 2.62 | k | |||||||
1994 | 0.50 | a | 1.30 | 0.80 | a | 1.57 | 0.67 | 1.10 | 1.44 | 2.60 | 1.25 | 0.50 | 1.15 | 0.30 | 2.60 | b | ||||||||||
1995 | 0.30 | 0.10 | 0.87 | 1.21 | 0.79 | g | 2.00 | e | 1.02 | 1.28 | 1.10 | 2.25 | d | 0.99 | 0.20 | 2.25 | p | |||||||||
1996 | 1.20 | 0.60 | 1.50 | 0.64 | 0.95 | 0.74 | a | 0.78 | a | 0.48 | 0.85 | 0.93 | u | 0.25 | h | ----- | z | ----- | z | |||||||
1997 | 0.00 | h | 0.80 | x | 2.10 | b | 2.24 | a | 0.60 | 1.52 | 2.42 | 1.35 | 1.45 | 1.91 | a | 0.30 | 0.17 | ----- | z | |||||||
1998 | 0.30 | 1.40 | 2.20 | 0.90 | 0.90 | 2.60 | a | 1.50 | 1.50 | 1.00 | 1.00 | 1.20 | 0.20 | 2.60 | a | |||||||||||
1999 | 1.00 | 0.50 | 0.20 | 2.50 | a | 1.70 | 1.50 | 2.40 | b | 0.70 | 0.50 | 0.70 | 1.40 | 0.50 | 2.50 | c | ||||||||||
2000 | 0.20 | 0.50 | 0.50 | a | 1.43 | b | 4.46 | 5.33 | 4.33 | 1.28 | 0.45 | 0.47 | a | 0.65 | b | ----- | z | ----- | z | |||||||
2001 | 0.27 | c | 0.00 | c | 2.13 | 1.62 | 1.49 | b | 0.75 | c | 0.35 | a | 2.16 | b | 1.66 | e | 0.52 | b | 0.83 | d | 0.50 | e | ----- | z | ||
2002 | 0.12 | 0.56 | a | 0.53 | c | 1.29 | c | 1.52 | 1.98 | b | 1.88 | b | 1.77 | e | 0.98 | g | 0.83 | a | 0.33 | a | 0.18 | 1.98 | y | |||
2003 | 0.36 | b | 0.27 | a | 0.40 | d | 1.45 | b | 1.20 | a | 1.13 | b | 2.25 | c | 0.41 | a | 1.45 | d | 0.53 | a | 2.47 | c | 0.35 | a | 2.47 | y |
2004 | 0.28 | b | 0.57 | 1.10 | 1.06 | 3.15 | 3.89 | 1.28 | 0.98 | 0.35 | 1.12 | 0.59 | 0.34 | 3.89 | b | |||||||||||
2005 | 0.69 | 0.63 | 0.33 | 0.35 | 0.91 | 2.04 | 2.00 | 1.30 | 0.92 | a | 0.34 | 1.03 | 0.30 | 2.04 | a | |||||||||||
2006 | 0.55 | i | 0.29 | 0.52 | 2.15 | j | 1.86 | 0.64 | f | 1.22 | 3.70 | d | 1.70 | i | 1.05 | a | 1.35 | a | 0.38 | g | ----- | z | ||||
2007 | 0.87 | g | 1.70 | p | 0.92 | i | 1.45 | m | 0.71 | e | 1.30 | g | 2.75 | a | 2.14 | h | 0.75 | 1.85 | e | 0.07 | f | 0.70 | r | ----- | z | |
2008 | 0.74 | r | 0.32 | q | 0.67 | f | 1.19 | n | 1.31 | 5.24 | d | 1.85 | 0.48 | 0.45 | b | 0.40 | 0.54 | 0.28 | n | ----- | z | |||||
2009 | 0.24 | n | 0.41 | d | 1.06 | c | 3.26 | c | 0.82 | i | 1.05 | b | 1.14 | c | 2.47 | g | 0.27 | a | 1.56 | k | 0.10 | d | 1.50 | d | ----- | z |
2010 | 1.01 | f | 0.40 | f | 0.47 | b | 0.93 | 2.40 | g | 2.84 | i | 2.87 | d | 3.81 | b | 3.30 | j | 0.90 | b | 1.06 | f | 1.05 | e | ----- | z | |
2011 | 0.14 | a | 0.72 | a | 1.46 | a | 0.90 | b | 1.75 | o | 0.61 | k | 1.57 | h | 0.95 | a | 1.51 | f | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.66 | u | 1.76 | 1.16 | d | 1.46 | d | 0.96 | p | ----- | z | |
2013 | ----- | z | 0.00 | y | 0.64 | k | 2.46 | b | 1.74 | 3.49 | 0.62 | 1.70 | a | 0.85 | 0.43 | 1.85 | f | 0.14 | q | ----- | z | |||||
2014 | 0.00 | u | ----- | z | 1.08 | s | 1.38 | c | 1.65 | b | 1.94 | 0.42 | a | 1.11 | 0.46 | a | 1.75 | a | 0.37 | d | 0.42 | d | ----- | z | ||
2015 | 0.00 | w | 0.06 | m | 0.45 | g | 1.88 | a | 1.24 | 2.24 | 1.03 | 1.25 | 1.39 | 1.65 | 1.21 | c | 2.55 | m | ----- | z | ||||||
2016 | 0.75 | i | 0.31 | r | 1.35 | s | 0.25 | 0.74 | b | 1.43 | 2.59 | 3.25 | a | 5.09 | 2.42 | 0.85 | 0.50 | m | ----- | z | ||||||
2017 | 0.78 | k | ----- | z | ----- | z | 1.08 | q | 1.34 | 1.40 | a | 4.52 | 0.99 | c | 1.21 | a | 2.10 | b | 0.20 | b | 0.15 | k | ----- | z | ||
2018 | 0.63 | f | 0.35 | l | 0.22 | c | 2.00 | k | 2.85 | a | 1.93 | c | 1.05 | a | 2.25 | c | 5.93 | g | 0.00 | o | 0.00 | k | 0.00 | i | ----- | z |
2019 | 0.00 | l | 0.00 | q | 0.00 | f | 0.00 | k | 0.00 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | 0.00 | x | 0.30 | e | 0.87 | g | 0.48 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.44 | 0.56 | 0.86 | 1.28 | 1.38 | 1.73 | 1.59 | 1.47 | 1.20 | 0.98 | 0.81 | 0.53 | 2.65 | |||||||||||||
S.D. | 0.34 | 0.42 | 0.59 | 0.73 | 0.76 | 1.15 | 0.99 | 0.96 | 0.87 | 0.57 | 0.51 | 0.35 | 0.70 | |||||||||||||
SKEW | 1.24 | 0.85 | 0.84 | 1.44 | 1.62 | 1.53 | 1.04 | 0.93 | 2.26 | 0.70 | 0.82 | 0.87 | 0.76 | |||||||||||||
MAX | 1.40 | 1.50 | 2.20 | 3.72 | 4.46 | 5.33 | 4.52 | 3.81 | 5.09 | 2.42 | 2.47 | 1.50 | 4.02 | |||||||||||||
MIN | 0.03 | 0.00 | 0.09 | 0.25 | 0.27 | 0.33 | 0.19 | 0.00 | 0.25 | 0.10 | 0.00 | 0.00 | 1.70 | |||||||||||||
YRS | 35 | 38 | 43 | 46 | 49 | 48 | 50 | 49 | 47 | 49 | 47 | 34 | 16 |