YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.48 | l | ----- | z |
1939 | 1.38 | 1.69 | 1.55 | 0.62 | 0.66 | s | 1.12 | q | 1.13 | ----- | z | 0.54 | 1.12 | o | 0.77 | s | 2.04 | g | ----- | z | ||||||
1940 | 0.78 | n | 2.00 | 3.30 | l | 1.22 | 0.75 | w | ----- | z | ----- | z | 0.24 | 1.97 | 2.91 | 1.76 | 2.12 | ----- | z | |||||||
1941 | 1.30 | 0.62 | 0.79 | 0.92 | 1.75 | 0.56 | 0.26 | 0.64 | 0.86 | 0.95 | 2.19 | 3.57 | 3.57 | |||||||||||||
1942 | 1.11 | 1.60 | 0.71 | 1.21 | 1.51 | 1.10 | 0.98 | 0.09 | 0.13 | 1.56 | 3.72 | 2.07 | 3.72 | |||||||||||||
1943 | 2.35 | 3.31 | 3.32 | 1.13 | 0.83 | 0.95 | 0.48 | 1.73 | 0.38 | 2.38 | n | 1.00 | 1.40 | 3.32 | n | |||||||||||
1944 | 2.07 | 0.92 | 1.48 | a | 0.96 | 0.51 | 0.55 | 0.00 | 0.03 | 0.80 | 0.59 | 1.55 | 0.65 | 2.07 | a | |||||||||||
1945 | 1.10 | 1.71 | 1.37 | 1.17 | 1.39 | 0.13 | 0.72 | 0.50 | 2.32 | 0.70 | 2.55 | 2.75 | 2.75 | |||||||||||||
1946 | 2.15 | 2.11 | 2.83 | 0.96 | 1.23 | 0.71 | 1.13 | 0.35 | 0.94 | 2.19 | 3.09 | l | 2.80 | 3.09 | l | |||||||||||
1947 | 1.34 | 1.61 | 1.24 | a | 1.19 | 0.29 | 2.03 | 0.82 | 0.26 | 1.10 | 2.05 | 1.50 | 0.95 | 2.05 | a | |||||||||||
1948 | 2.80 | 1.45 | 3.13 | 0.90 | 1.55 | 0.75 | 0.50 | 0.70 | 1.43 | 0.99 | 1.23 | a | 2.05 | 3.13 | a | |||||||||||
1949 | 0.65 | 3.05 | 0.92 | a | 0.56 | 1.60 | a | 1.97 | ----- | z | 0.39 | 1.30 | 1.30 | 2.00 | 1.55 | ----- | z | |||||||||
1950 | ----- | z | 0.63 | b | 1.20 | a | 1.10 | ----- | z | 0.56 | 0.48 | 0.62 | 0.97 | 1.97 | 3.10 | 1.52 | b | ----- | z | |||||||
1951 | 2.02 | 1.32 | 1.81 | 1.10 | 1.93 | 0.00 | 0.44 | 0.38 | 1.13 | 2.24 | a | 1.05 | 2.03 | 2.24 | a | |||||||||||
1952 | ----- | z | 2.08 | 2.01 | 1.40 | 0.70 | 2.70 | 0.00 | 0.01 | 0.46 | 0.55 | 0.71 | 0.95 | ----- | z | |||||||||||
1953 | 3.45 | 1.81 | 2.02 | 0.90 | 1.27 | 1.49 | 0.06 | 0.95 | 1.16 | 1.31 | 3.52 | 2.69 | 3.52 | |||||||||||||
1954 | 2.66 | 1.42 | 1.94 | 1.50 | 1.11 | 1.03 | 0.42 | 0.36 | 0.80 | 1.70 | 1.60 | 2.20 | 2.66 | |||||||||||||
1955 | 0.72 | 1.31 | 1.30 | 1.90 | 1.63 | 1.40 | 0.42 | 0.01 | 1.25 | 4.31 | 3.35 | 2.46 | 4.31 | |||||||||||||
1956 | 3.08 | 1.94 | 1.66 | 0.70 | 0.65 | 1.05 | 0.02 | 0.70 | 0.53 | 1.63 | 1.35 | 1.33 | 3.08 | |||||||||||||
1957 | 0.92 | 1.30 | 1.65 | 1.13 | 0.95 | 0.96 | 0.29 | 0.62 | 0.36 | 1.00 | 1.39 | 3.07 | 3.07 | |||||||||||||
1958 | 2.11 | 1.50 | 0.70 | 2.35 | 0.49 | 1.80 | 0.00 | 0.13 | 0.60 | 1.20 | 2.39 | 1.69 | 2.39 | |||||||||||||
1959 | 2.87 | 2.11 | 1.10 | 1.08 | 1.42 | 0.80 | 0.55 | 0.21 | 1.25 | 1.46 | 1.05 | 1.35 | 2.87 | |||||||||||||
1960 | 1.17 | 2.06 | 1.65 | 1.10 | 1.66 | 0.94 | 0.02 | 0.77 | 1.00 | 1.87 | 4.22 | 1.78 | 4.22 | |||||||||||||
1961 | 1.93 | 3.73 | 1.82 | 0.82 | 0.66 | 0.60 | 0.75 | 0.77 | 1.08 | 1.55 | 2.38 | 1.95 | 3.73 | |||||||||||||
1962 | 0.83 | 0.92 | 2.41 | 1.82 | 1.26 | 0.99 | 0.14 | 1.87 | 1.43 | 1.55 | 4.00 | 2.24 | c | 4.00 | c | |||||||||||
1963 | 1.19 | 3.22 | 2.75 | 1.77 | 2.18 | 0.59 | 0.78 | 0.09 | 2.02 | 1.99 | 2.55 | 1.27 | 3.22 | |||||||||||||
1964 | 2.51 | 1.17 | 0.96 | 1.16 | 0.58 | 0.70 | 0.68 | 0.91 | 1.15 | 0.60 | 2.48 | 3.30 | d | 3.30 | d | |||||||||||
1965 | 3.01 | 1.05 | 1.60 | 1.34 | 1.07 | 0.52 | 0.32 | 0.60 | 0.24 | 1.32 | 1.04 | 3.02 | d | 3.02 | d | |||||||||||
1966 | 2.36 | 0.86 | 2.18 | 0.77 | 0.58 | 1.12 | 0.53 | 0.33 | 1.32 | 1.93 | 2.77 | 1.78 | 2.77 | |||||||||||||
1967 | 1.68 | 1.19 | 0.96 | 1.71 | 0.85 | 0.40 | 0.00 | 0.00 | 0.64 | 2.15 | 1.84 | 1.24 | 2.15 | |||||||||||||
1968 | 1.18 | 3.48 | 0.65 | 0.96 | 1.23 | 1.03 | 0.29 | 1.34 | 1.23 | 2.25 | 1.80 | 2.72 | 3.48 | |||||||||||||
1969 | 2.62 | 1.74 | 1.52 | 1.33 | 1.08 | 1.98 | 0.34 | 0.12 | 1.20 | 1.96 | 2.30 | 2.31 | 2.62 | |||||||||||||
1970 | 3.07 | a | 2.33 | 1.39 | 1.22 | 1.27 | 0.49 | 0.03 | 0.01 | 1.32 | 1.27 | 2.52 | 1.64 | 3.07 | a | |||||||||||
1971 | 2.60 | 1.68 | a | 1.54 | 2.34 | 1.10 | 2.30 | 0.38 | 1.52 | 1.75 | 1.57 | 2.74 | 2.50 | 2.74 | a | |||||||||||
1972 | 4.48 | 1.50 | 2.14 | 1.16 | 1.78 | 0.35 | 0.32 | 0.75 | 1.72 | 1.20 | 1.33 | 2.01 | 4.48 | |||||||||||||
1973 | 2.36 | 0.78 | 1.05 | a | 0.90 | 1.15 | 1.80 | 0.10 | 1.50 | 1.02 | 2.00 | 2.40 | 2.85 | 2.85 | a | |||||||||||
1974 | 4.60 | 2.70 | 1.95 | 1.48 | 1.49 | 0.97 | 1.43 | 0.27 | 0.62 | 1.03 | 2.15 | 2.85 | 4.60 | |||||||||||||
1975 | 1.90 | a | 1.38 | 1.60 | 1.32 | 1.44 | 0.69 | 0.28 | 1.18 | a | 0.00 | 1.69 | 1.70 | 2.70 | 2.70 | b | ||||||||||
1976 | 1.76 | 1.64 | 1.65 | 1.09 | 0.95 | 1.10 | 0.78 | 1.41 | 1.18 | 1.04 | 1.00 | c | 0.80 | e | 1.76 | h | ||||||||||
1977 | 1.19 | a | 1.50 | a | 1.70 | 1.10 | 1.90 | b | 0.92 | 0.80 | 0.75 | 2.50 | f | 1.38 | 4.00 | b | 3.70 | h | 4.00 | t | ||||||
1978 | 1.78 | 1.17 | 1.07 | b | 2.38 | c | 1.06 | 2.09 | a | 1.08 | 1.22 | 0.95 | 1.05 | 2.50 | a | 1.03 | a | 2.50 | h | |||||||
1979 | 1.90 | a | 3.20 | 1.23 | 1.90 | d | ----- | z | 1.20 | a | 0.72 | 0.55 | 1.06 | 2.11 | 2.00 | a | 2.43 | ----- | z | |||||||
1980 | 2.60 | a | 1.36 | 1.73 | 1.40 | 0.70 | 1.15 | a | 0.00 | 0.21 | 1.40 | 0.60 | 1.80 | 2.05 | i | 2.60 | k | |||||||||
1981 | 0.92 | 1.44 | 1.28 | c | 2.25 | a | 1.08 | a | 1.57 | 0.40 | 0.21 | 0.00 | m | 1.71 | 1.50 | e | 2.60 | k | ----- | z | ||||||
1982 | 2.00 | h | 2.10 | e | 1.25 | c | 2.10 | d | 0.68 | x | 0.70 | 0.46 | a | 0.62 | 1.40 | 1.75 | 1.30 | 3.50 | f | ----- | z | |||||
1983 | 2.60 | a | 1.65 | b | 1.43 | 1.28 | 1.35 | 1.90 | 1.25 | c | 1.60 | a | 0.42 | 1.50 | 2.05 | d | 1.60 | d | 2.60 | o | ||||||
1984 | 1.60 | a | 1.95 | b | 1.10 | a | 1.33 | 1.40 | 2.00 | a | 0.10 | a | 0.10 | a | 1.22 | 2.00 | 2.79 | e | 1.05 | a | 2.79 | m | ||||
1985 | 0.35 | 7.00 | 1.68 | 1.80 | 0.60 | 2.00 | 0.35 | 0.80 | a | 0.93 | 1.53 | 2.20 | f | 1.55 | a | 7.00 | h | |||||||||
1986 | 2.05 | g | 2.05 | c | 1.12 | 3.33 | c | 1.17 | 1.05 | 1.15 | 0.25 | 1.15 | 0.80 | a | 3.32 | c | 0.90 | c | 3.33 | t | ||||||
1987 | 1.99 | a | 1.63 | b | 1.08 | b | 1.15 | 1.43 | a | 0.06 | 1.31 | b | 0.00 | 0.00 | 0.00 | 1.28 | k | 4.10 | 4.10 | s | ||||||
1988 | 2.20 | a | 1.65 | 1.30 | 2.00 | 1.40 | 1.14 | 0.52 | 0.00 | 0.70 | e | 0.21 | 2.80 | 0.98 | o | 2.80 | u | |||||||||
1989 | 1.80 | g | 1.70 | c | 1.73 | 0.65 | 1.43 | 0.83 | f | 0.63 | 1.16 | 0.51 | 2.05 | h | 1.45 | 1.22 | 2.05 | x | ||||||||
1990 | 1.60 | c | 1.95 | g | 1.25 | d | 2.12 | 1.10 | a | 1.13 | b | 0.69 | 0.72 | 0.35 | 2.03 | 2.51 | 1.08 | 2.51 | q | |||||||
1991 | 1.59 | 1.73 | 2.10 | a | 1.82 | 2.51 | 1.75 | 0.40 | 1.79 | b | 0.08 | 0.82 | 2.10 | f | 2.00 | b | 2.51 | k | ||||||||
1992 | 1.20 | 1.85 | 0.55 | 1.71 | a | 0.00 | 0.00 | m | 0.72 | b | 0.04 | a | 1.35 | f | 1.02 | 1.95 | c | 1.40 | d | ----- | z | |||||
1993 | 1.10 | f | 1.80 | c | 2.05 | a | 2.20 | c | 1.78 | c | 1.50 | a | 1.10 | a | 0.20 | 0.00 | 0.68 | 1.83 | 1.60 | a | 2.20 | s | ||||
1994 | 2.04 | a | 2.10 | b | 2.35 | c | 1.30 | 2.10 | d | 1.35 | b | 0.00 | 0.20 | a | 1.24 | 5.30 | 1.71 | d | 1.98 | b | 5.30 | s | ||||
1995 | 1.55 | 4.00 | b | 3.51 | d | 2.08 | c | 1.70 | 0.90 | 1.75 | 0.53 | 2.21 | d | 4.00 | 3.30 | 3.40 | 4.00 | m | ||||||||
1996 | 4.35 | m | 3.25 | g | 2.00 | 7.00 | r | 3.00 | d | ----- | z | 0.00 | b | 0.00 | 0.20 | 2.00 | 3.15 | 3.10 | a | ----- | z | |||||
1997 | 4.20 | 2.20 | w | ----- | z | ----- | z | 0.95 | ----- | z | 1.00 | 0.84 | 2.50 | 2.60 | 1.17 | 1.20 | ----- | z | ||||||||
1998 | 0.95 | b | 2.60 | b | 1.50 | a | 1.20 | a | 2.00 | 1.80 | 0.50 | 0.00 | 0.50 | 1.00 | a | 1.08 | 0.75 | a | 2.60 | h | ||||||
1999 | 1.75 | g | 2.00 | c | 2.20 | b | 0.80 | 1.55 | 1.57 | 0.30 | b | 0.33 | a | 0.00 | 1.05 | b | 5.60 | a | 1.15 | g | 5.60 | y | ||||
2000 | 1.08 | g | 0.60 | 0.59 | 0.25 | r | 1.00 | a | 1.25 | ----- | z | 0.00 | 0.49 | 0.45 | ----- | z | 0.65 | l | ----- | z | ||||||
2001 | 0.25 | 0.60 | 1.00 | 1.00 | 0.95 | 0.95 | 0.45 | 0.94 | 0.70 | 1.10 | 1.12 | 1.50 | b | 1.50 | b | |||||||||||
2002 | 1.15 | e | 8.50 | b | 1.30 | o | 1.25 | n | 1.35 | e | 0.45 | 0.15 | 0.05 | 0.54 | 0.53 | 1.20 | 1.69 | ----- | z | |||||||
2003 | 1.79 | 1.26 | 1.48 | 0.75 | 0.05 | 0.01 | 0.00 | 0.10 | 0.54 | 0.45 | 1.33 | ----- | 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 | 1.20 | r | 2.00 | a | 2.00 | x | ----- | z |
2006 | 4.00 | g | 1.80 | p | ----- | z | 5.15 | x | ----- | z | ----- | z | 0.00 | 0.00 | ----- | z | 2.00 | k | 6.69 | l | 4.45 | j | ----- | z | ||
2007 | 3.80 | d | 5.00 | h | 2.86 | e | 2.63 | l | 1.65 | 1.25 | f | 1.17 | 1.32 | a | 1.95 | a | 3.33 | b | ----- | z | ----- | z | ----- | z | ||
2008 | ----- | z | ----- | z | 2.92 | o | 3.27 | m | 2.50 | i | 1.24 | 0.16 | 1.35 | 0.97 | 1.52 | 1.80 | 4.00 | a | ----- | z | ||||||
2009 | 3.00 | 5.00 | 2.00 | a | 1.28 | 1.30 | 0.64 | 0.31 | 0.23 | 1.04 | 1.30 | 2.30 | 2.13 | 5.00 | a | |||||||||||
2010 | 2.00 | 1.40 | 2.91 | 1.43 | 1.12 | 1.19 | 0.00 | 0.34 | 2.05 | 2.97 | 2.50 | 6.00 | 6.00 | |||||||||||||
2011 | 1.11 | i | 4.50 | l | 2.10 | m | 0.55 | r | 0.15 | u | 0.86 | g | 0.33 | c | 0.21 | 0.00 | g | 0.00 | p | 1.21 | q | 0.23 | j | ----- | z | |
2012 | 4.22 | i | 1.24 | m | 3.14 | k | 1.37 | l | 0.55 | m | 0.62 | x | 0.30 | a | 0.90 | 0.20 | b | 0.75 | l | 3.70 | q | 4.40 | m | ----- | z | |
2013 | 1.30 | i | 1.20 | b | 0.20 | 0.95 | 1.75 | 0.55 | 0.07 | 0.35 | 1.70 | b | 0.49 | 0.98 | a | 2.10 | 2.10 | n | ||||||||
2014 | 1.33 | 1.46 | 1.60 | 0.54 | 1.37 | 0.98 | 1.05 | 0.55 | 0.80 | 2.00 | 2.20 | 1.60 | 2.20 | |||||||||||||
2015 | 0.42 | 0.90 | 2.98 | 1.27 | 0.52 | 0.30 | 0.00 | 1.87 | 1.30 | 2.10 | 1.41 | 2.00 | 2.98 | |||||||||||||
2016 | 0.95 | 1.34 | m | 1.36 | 0.75 | 2.05 | b | 0.60 | 0.50 | 0.16 | 0.55 | 2.20 | 1.00 | 1.20 | 2.20 | o | ||||||||||
2017 | 2.70 | a | 2.85 | 3.00 | 6.90 | o | 0.82 | 1.94 | 0.00 | 0.00 | 1.52 | 8.70 | m | 4.51 | n | 1.59 | y | ----- | z | |||||||
2018 | 5.30 | k | 2.12 | a | 2.00 | 7.70 | a | 0.09 | 2.37 | b | 0.00 | 0.40 | 0.30 | 2.13 | 2.02 | 3.59 | s | ----- | z | |||||||
2019 | 2.60 | a | 2.28 | 8.50 | e | 2.00 | o | 1.33 | r | 1.50 | b | 0.60 | 0.12 | 2.23 | a | 0.52 | v | 1.62 | 2.96 | ----- | z | |||||
2020 | 2.48 | d | 7.00 | g | 5.63 | d | 1.22 | c | 2.69 | d | 4.92 | g | 0.02 | 0.14 | o | 1.92 | 4.20 | c | 3.74 | 5.26 | n | ----- | z | |||
2021 | 4.01 | t | 3.53 | u | 3.86 | s | 0.94 | c | 1.46 | a | 1.90 | q | 0.00 | 0.00 | 2.20 | h | 1.50 | a | 2.50 | h | 2.90 | e | ----- | z | ||
2022 | 2.80 | e | 1.85 | f | 2.48 | e | 1.20 | j | 2.00 | g | 2.00 | i | 0.34 | 0.27 | f | 0.50 | l | 1.90 | g | ----- | z | 2.00 | t | ----- | z | |
2023 | 1.90 | j | 1.30 | l | 2.00 | r | 1.57 | f | 0.43 | a | 0.47 | c | 0.05 | 0.70 | d | 1.45 | b | 1.90 | j | 1.95 | a | 2.00 | n | ----- | z | |
2024 | 2.00 | k | 2.00 | l | 1.60 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.98 | 1.99 | 1.82 | 1.43 | 1.25 | 1.10 | 0.46 | 0.55 | 1.00 | 1.63 | 2.13 | 2.07 | 3.20 | |||||||||||||
S.D. | 0.96 | 1.30 | 1.14 | 0.93 | 0.58 | 0.61 | 0.41 | 0.52 | 0.61 | 0.96 | 0.94 | 0.95 | 0.93 | |||||||||||||
SKEW | 0.58 | 2.83 | 3.24 | 4.66 | 0.31 | 0.42 | 0.85 | 0.96 | 0.37 | 1.39 | 1.07 | 1.29 | 0.87 | |||||||||||||
MAX | 4.60 | 8.50 | 8.50 | 7.70 | 3.00 | 2.70 | 1.75 | 1.87 | 2.50 | 5.30 | 5.60 | 6.00 | 6.00 | |||||||||||||
MIN | 0.25 | 0.60 | 0.20 | 0.54 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.71 | 0.65 | 1.50 | |||||||||||||
YRS | 65 | 70 | 74 | 70 | 72 | 70 | 80 | 80 | 76 | 73 | 71 | 65 | 35 |