YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.15 | s | 0.11 | 0.40 | f | 0.11 | k | |
1952 | 1.49 | 0.49 | 0.43 | 0.34 | 0.78 | 1.78 | 0.35 | 0.03 | 1.57 | 0.00 | ----- | z | ----- | z | 7.26 | b | ||||||||||
1953 | 0.21 | 0.14 | 0.07 | 0.42 | 1.82 | 0.85 | 0.00 | 0.46 | 0.10 | 0.16 | 0.63 | 0.53 | 5.39 | |||||||||||||
1954 | 0.62 | 0.18 | 0.24 | 0.10 | 0.08 | 0.23 | 0.00 | 0.05 | 0.00 | 0.14 | 0.09 | 0.65 | 2.38 | |||||||||||||
1955 | 0.55 | ----- | z | 0.24 | 0.49 | ----- | z | ----- | z | ----- | z | 0.00 | 0.09 | 0.10 | 0.39 | 0.96 | 2.82 | d | ||||||||
1956 | 0.85 | 0.13 | 0.11 | 0.86 | 1.51 | 0.41 | m | 0.18 | 0.07 | 0.46 | 1.00 | ----- | z | ----- | z | 5.17 | c | |||||||||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.14 | 0.30 | 0.00 | 0.00 | i | 0.44 | i | |||
1960 | 0.63 | 1.43 | 0.82 | 0.19 | 0.44 | 0.01 | 0.56 | b | 0.13 | 0.17 | 0.02 | 2.59 | b | 0.53 | 7.52 | |||||||||||
1961 | 0.11 | b | 0.34 | 0.46 | 0.11 | 0.66 | 0.96 | 0.34 | 0.90 | 0.46 | 0.38 | 0.26 | 0.48 | a | 5.46 | |||||||||||
1962 | 0.34 | 0.88 | a | 0.29 | 0.00 | 1.34 | 0.31 | 0.05 | 0.17 | 0.04 | 1.46 | 0.44 | 0.21 | 5.53 | ||||||||||||
1963 | 0.53 | 0.73 | 0.42 | 0.38 | 1.02 | 2.06 | 0.00 | 0.33 | 0.14 | 0.21 | 0.56 | 0.26 | 6.64 | |||||||||||||
1964 | 0.55 | 0.03 | 0.22 | 0.32 | 0.68 | 2.30 | 0.35 | 0.38 | 0.06 | 0.25 | 0.16 | 1.42 | 6.72 | |||||||||||||
1965 | 0.98 | 0.02 | 0.10 | 0.13 | 0.68 | 1.58 | 0.14 | 1.48 | 0.00 | 0.04 | 1.02 | 0.49 | 6.66 | |||||||||||||
1966 | 0.10 | 1.00 | 0.12 | 0.15 | 0.40 | 0.48 | 0.00 | 0.21 | 0.72 | 0.00 | 0.94 | 0.61 | 4.73 | |||||||||||||
1967 | 0.51 | 0.02 | 0.29 | 1.04 | 0.89 | 1.10 | 0.39 | 0.18 | 0.57 | 0.06 | 1.04 | 0.27 | 6.36 | |||||||||||||
1968 | 0.34 | 0.40 | 0.08 | 0.05 | 0.64 | 0.63 | 0.10 | 1.20 | 0.00 | 0.32 | 1.36 | 0.18 | 5.30 | |||||||||||||
1969 | 1.99 | 0.45 | 0.19 | 0.20 | 0.33 | 2.24 | 0.69 | 0.00 | 0.29 | 1.54 | 0.20 | 1.42 | 9.54 | |||||||||||||
1970 | 1.21 | 0.07 | 0.09 | 0.71 | 0.36 | 1.16 | 0.39 | 0.00 | 0.82 | 0.81 | 1.78 | j | 1.23 | 6.85 | a | |||||||||||
1971 | 0.51 | 0.20 | 0.61 | ----- | z | 4.15 | 1.06 | 0.00 | q | 0.02 | 1.56 | 0.56 | 0.81 | 0.81 | 10.29 | b | ||||||||||
1972 | 0.52 | 0.86 | 0.12 | 0.18 | 0.08 | 0.72 | 0.02 | 0.00 | 0.37 | 0.89 | 1.12 | 0.64 | 5.52 | |||||||||||||
1973 | 0.56 | 0.62 | 1.14 | 0.53 | 0.20 | 0.00 | 1.16 | 0.32 | 0.32 | 0.28 | 0.84 | c | 0.83 | 6.80 | ||||||||||||
1974 | 0.59 | 0.22 | 1.05 | 1.03 | 0.28 | 0.00 | 0.65 | 0.04 | ----- | z | ----- | z | ----- | z | 0.64 | l | 3.86 | d | ||||||||
1975 | 0.35 | 0.50 | 0.52 | 0.61 | 0.15 | 1.24 | 0.39 | 1.65 | 0.39 | 0.79 | f | 0.06 | 0.42 | 6.28 | a | |||||||||||
1976 | 0.39 | 0.29 | 0.54 | 0.09 | 0.23 | 0.85 | 0.86 | 2.02 | 1.94 | 0.06 | 0.00 | 0.00 | 7.27 | |||||||||||||
1977 | 0.44 | 0.12 | 0.25 | 0.26 | 1.87 | 0.69 | 0.52 | 0.17 | a | 0.19 | 0.19 | 0.74 | 1.91 | c | 7.35 | |||||||||||
1978 | 1.42 | 0.28 | 2.09 | 2.49 | 0.04 | 0.49 | 0.34 | 0.58 | 1.20 | 0.00 | 1.00 | 0.40 | 10.33 | |||||||||||||
1979 | 0.91 | 1.03 | 1.00 | 1.47 | 1.01 | 0.53 | 0.56 | 2.14 | ----- | z | 0.40 | d | 0.68 | h | 1.05 | i | 9.05 | c | ||||||||
1980 | 1.89 | a | 0.35 | a | 0.18 | b | 0.55 | 1.30 | 0.86 | ----- | z | 0.00 | 1.13 | 0.38 | 0.29 | c | 0.13 | k | 6.93 | b | ||||||
1981 | 0.77 | 0.51 | 1.03 | 0.13 | c | 1.27 | 0.33 | 0.00 | 0.35 | 0.07 | 0.71 | 1.03 | b | 0.66 | 6.86 | |||||||||||
1982 | 0.30 | 0.16 | f | 0.91 | a | 0.08 | b | 0.21 | 2.09 | ----- | z | 0.05 | ----- | z | ----- | z | ----- | z | 0.33 | a | 3.97 | e | ||||
1983 | 0.40 | b | 0.54 | a | 1.33 | 1.37 | a | 1.22 | 1.76 | 0.26 | 1.52 | 1.13 | 0.34 | 1.31 | ----- | z | 11.18 | a | ||||||||
1984 | 1.83 | 0.58 | 0.70 | 0.60 | 0.45 | 0.61 | a | 0.49 | e | 0.36 | 0.96 | 0.98 | 2.33 | 0.88 | b | 10.77 | ||||||||||
1985 | 0.10 | 0.41 | f | 0.47 | a | 0.56 | 0.41 | 0.00 | 0.30 | 0.00 | 0.53 | 0.00 | 0.69 | c | 0.06 | f | 3.06 | b | ||||||||
1986 | 0.16 | 2.25 | 1.72 | 1.26 | 0.71 | ----- | z | 0.52 | 0.31 | 0.65 | ----- | z | 0.07 | 0.44 | f | 7.65 | c | |||||||||
1987 | 0.18 | a | 0.26 | 0.42 | 0.81 | k | 2.30 | 0.68 | 0.00 | b | 0.15 | 0.00 | 0.34 | 0.94 | b | ----- | z | 5.27 | b | |||||||
1988 | 0.71 | 0.25 | 0.14 | a | 1.74 | 0.16 | a | 0.32 | 0.01 | 0.37 | 0.32 | 0.00 | 0.96 | 0.46 | a | 5.44 | ||||||||||
1989 | 0.37 | 0.39 | a | 0.25 | 0.21 | b | 1.78 | d | 0.29 | b | 0.00 | 0.38 | 0.51 | 0.42 | 0.24 | 0.20 | 5.04 | |||||||||
1990 | 0.36 | 0.32 | c | 0.29 | 0.73 | c | 0.85 | 0.02 | b | 0.52 | 0.96 | 0.02 | b | 0.10 | 0.22 | 0.25 | 4.64 | |||||||||
1991 | 0.65 | 0.49 | f | 1.55 | a | 0.71 | 1.94 | a | 0.77 | d | 0.16 | a | 0.59 | b | 0.42 | c | 0.79 | 0.43 | 0.62 | 8.63 | a | |||||
1992 | 0.10 | 0.52 | e | 1.09 | 0.24 | 0.04 | 1.01 | 0.32 | 0.06 | 0.03 | 1.47 | 0.38 | d | 1.56 | 6.82 | |||||||||||
1993 | 1.69 | 0.49 | a | 1.12 | b | 0.59 | a | 0.87 | 2.36 | 0.27 | 1.49 | 0.02 | 0.63 | a | 0.56 | a | 0.44 | a | 10.53 | |||||||
1994 | 0.13 | 0.75 | 0.74 | b | 0.46 | 1.16 | 0.22 | 0.17 | 0.00 | 0.30 | 0.20 | 0.74 | a | 1.58 | 6.45 | |||||||||||
1995 | 1.12 | 0.22 | 1.10 | 1.58 | k | 1.12 | e | 1.47 | f | 0.80 | d | 0.00 | 0.02 | 0.04 | 0.18 | 1.52 | f | 4.60 | c | |||||||
1996 | 1.67 | o | 1.11 | 0.79 | 0.82 | 2.06 | 1.52 | 0.14 | 0.13 | 0.05 | b | 0.71 | e | 0.27 | f | 0.81 | c | 8.14 | b | |||||||
1997 | 0.74 | d | 0.46 | a | 0.15 | d | 0.72 | a | 0.60 | f | 1.04 | f | 0.37 | 0.07 | a | 0.30 | 0.15 | ----- | z | ----- | z | 2.96 | d | |||
1998 | ----- | z | 0.87 | c | ----- | z | 0.95 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.34 | d | 0.74 | e | 3.90 | h | |
1999 | 0.87 | 0.55 | 0.39 | c | 0.35 | c | 0.12 | 0.83 | 0.00 | 1.20 | b | 0.02 | 0.10 | 0.44 | p | ----- | z | 4.43 | b | |||||||
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.14 | 0.96 | 0.55 | 1.65 | i | |||
2002 | 0.73 | 0.22 | 0.12 | 0.72 | 0.33 | 0.11 | 0.44 | b | 0.02 | 0.00 | 0.14 | s | 0.25 | 0.20 | 3.14 | a | ||||||||||
2003 | 0.23 | 0.35 | 0.14 | 0.34 | 0.73 | 0.26 | 0.39 | 1.10 | d | 0.49 | a | 0.08 | a | 0.69 | 0.58 | e | 5.38 | |||||||||
2004 | 0.26 | 0.21 | 0.28 | 0.22 | 1.28 | 0.70 | 0.00 | 0.52 | 0.30 | 1.18 | b | 0.80 | 0.31 | 6.06 | ||||||||||||
2005 | 0.55 | b | 0.11 | 0.28 | 0.38 | b | 3.78 | b | 0.09 | e | 0.00 | 0.11 | a | 0.17 | 0.82 | c | 0.96 | 1.06 | u | 7.25 | a | |||||
2006 | 0.42 | o | 0.31 | 0.41 | a | ----- | z | 0.17 | y | 0.39 | 0.10 | 0.03 | 0.03 | c | 0.48 | 0.28 | 0.09 | 2.12 | c | |||||||
2007 | 0.16 | 0.34 | 0.04 | 0.36 | 0.14 | 0.27 | 0.04 | 0.02 | 0.68 | 0.42 | 0.10 | 0.21 | c | 2.78 | ||||||||||||
2008 | 0.45 | 0.23 | 0.08 | 0.07 | i | 1.08 | 0.23 | 0.13 | 0.00 | 0.09 | 0.03 | 0.46 | 0.62 | 3.40 | a | |||||||||||
2009 | 0.39 | c | 0.05 | 0.13 | 0.30 | ----- | z | 3.67 | 0.24 | 0.35 | 0.05 | 0.20 | 0.10 | 0.44 | 5.92 | a | ||||||||||
2010 | 0.60 | 0.26 | 0.52 | 1.04 | 0.91 | 0.25 | 0.12 | 0.12 | 0.31 | 2.56 | 0.22 | 1.15 | 8.06 | |||||||||||||
2011 | 0.19 | 0.29 | 0.82 | 0.77 | 1.58 | 0.60 | 0.00 | b | ----- | z | 0.01 | 0.55 | 0.29 | 0.04 | 5.14 | a | ||||||||||
2012 | 0.36 | 0.19 | 0.15 | 0.19 | 0.21 | 0.12 | 0.09 | 0.16 | 0.12 | 0.07 | 0.04 | 0.81 | 2.51 | |||||||||||||
2013 | 0.74 | 0.13 | 0.00 | 0.38 | 1.31 | 0.90 | 1.00 | 0.25 | 0.80 | 0.15 | 0.04 | 0.02 | 5.72 | |||||||||||||
2014 | 0.13 | 0.09 | 0.53 | 0.16 | 0.35 | 0.33 | 0.66 | 0.60 | 1.19 | 0.05 | 0.66 | 0.48 | 5.23 | |||||||||||||
2015 | 0.04 | 0.19 | 0.22 | 0.33 | 1.81 | 0.00 | 1.12 | 0.16 | 0.06 | 1.29 | 0.49 | 0.96 | 6.67 | |||||||||||||
2016 | 0.19 | 0.08 | 0.81 | 0.38 | 1.28 | 0.02 | 0.15 | 0.00 | 0.07 | 0.45 | 0.04 | 1.11 | 4.58 | |||||||||||||
2017 | 1.92 | 0.38 | 0.41 | 0.40 | 0.00 | 0.63 | 0.75 | 0.68 | 0.02 | 0.12 | 0.75 | 0.04 | 6.10 | |||||||||||||
2018 | 0.53 | 0.09 | 0.31 | 0.40 | 1.17 | 0.62 | 0.13 | 0.00 | 0.00 | 0.39 | 0.25 | ----- | z | 3.89 | a | |||||||||||
2019 | 0.86 | 0.79 | 1.25 | 0.65 | 1.19 | 0.98 | 0.26 | 0.33 | 0.87 | ----- | z | 0.06 | 0.89 | 8.13 | a | |||||||||||
2020 | ----- | z | 0.03 | ----- | z | 0.20 | 0.14 | 1.01 | 0.12 | 0.10 | 0.00 | 0.00 | 0.56 | 0.27 | 2.43 | b | ||||||||||
2021 | 0.39 | 0.10 | 0.30 | 0.35 | 0.24 | 0.18 | 0.03 | 0.00 | 0.38 | 0.53 | 0.04 | 0.79 | 3.33 | |||||||||||||
2022 | 0.02 | 0.10 | 0.83 | 0.11 | 0.34 | 0.40 | 0.00 | 0.89 | 0.25 | 0.10 | 0.21 | 0.76 | 4.01 | |||||||||||||
2023 | 0.12 | 0.11 | 0.28 | 0.17 | 2.75 | 0.71 | 0.00 | 1.53 | 0.17 | 0.64 | 0.35 | 0.04 | 6.87 | |||||||||||||
2024 | 0.69 | 0.22 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.91 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.60 | 0.40 | 0.52 | 0.52 | 0.94 | 0.78 | 0.29 | 0.42 | 0.38 | 0.43 | 0.57 | 0.61 | 6.14 | |||||||||||||
S.D. | 0.49 | 0.38 | 0.45 | 0.45 | 0.85 | 0.73 | 0.30 | 0.54 | 0.44 | 0.49 | 0.52 | 0.44 | 1.98 | |||||||||||||
SKEW | 1.38 | 2.30 | 1.29 | 1.96 | 1.62 | 1.58 | 1.11 | 1.55 | 1.56 | 1.95 | 1.64 | 0.89 | 0.44 | |||||||||||||
MAX | 1.99 | 2.25 | 2.09 | 2.49 | 4.15 | 3.67 | 1.16 | 2.14 | 1.94 | 2.56 | 2.59 | 1.91 | 10.77 | |||||||||||||
MIN | 0.02 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.38 | |||||||||||||
YRS | 64 | 64 | 65 | 62 | 62 | 61 | 62 | 65 | 64 | 62 | 61 | 54 | 38 |