YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | 0.98 | e | 0.11 | 1.80 | 1.70 | 0.67 | 1.04 | 0.79 | 0.95 | 8.04 | d | |||||||
1978 | 1.53 | 0.96 | 2.34 | 1.40 | 1.26 | 0.30 | 0.88 | 1.00 | 1.11 | 0.75 | 1.72 | 1.41 | 14.66 | |||||||||||||
1979 | 0.47 | 1.40 | 1.90 | 1.57 | 3.36 | 0.56 | 0.88 | 1.50 | 0.12 | 2.69 | 1.05 | 0.47 | 15.97 | |||||||||||||
1980 | 2.34 | 1.38 | 2.69 | 0.54 | 2.53 | 0.43 | 0.63 | 1.83 | 0.75 | 1.50 | 0.38 | 0.51 | 15.51 | |||||||||||||
1981 | 0.28 | 0.60 | 2.26 | 0.78 | 3.95 | 1.31 | 1.61 | 0.19 | 1.33 | 4.52 | 0.62 | 0.91 | 18.36 | |||||||||||||
1982 | 1.56 | 0.44 | 2.04 | 1.87 | 1.11 | 0.73 | 1.28 | 1.24 | 3.05 | 1.79 | 2.21 | 0.60 | 17.92 | |||||||||||||
1983 | 0.58 | 1.20 | 1.80 | 2.93 | a | 1.59 | 2.98 | 2.44 | 1.71 | 0.69 | 3.07 | 2.63 | 3.35 | 24.97 | ||||||||||||
1984 | 0.85 | 0.70 | 2.19 | 2.18 | 1.16 | 2.98 | 2.42 | 2.43 | 2.51 | 2.08 | 1.21 | 1.21 | 21.92 | |||||||||||||
1985 | 1.47 | 1.04 | 1.40 | 2.55 | 0.91 | 1.02 | 1.51 | 0.66 | 1.01 | 3.42 | 2.94 | 0.59 | 18.52 | |||||||||||||
1986 | 0.49 | 2.13 | 1.50 | 1.71 | 0.89 | 1.46 | 3.00 | 0.84 | 2.93 | 1.73 | 1.62 | 0.52 | 18.82 | |||||||||||||
1987 | 0.82 | 1.40 | 0.96 | 0.98 | 2.42 | 1.18 | 1.35 | 2.11 | 0.33 | 1.00 | 1.16 | 1.18 | 14.89 | |||||||||||||
1988 | 1.25 | 0.45 | 0.98 | 0.43 | 1.28 | 0.55 | 0.40 | 1.28 | 1.58 | 0.22 | 1.77 | 0.97 | 11.16 | |||||||||||||
1989 | 0.97 | 2.15 | 1.01 | 0.35 | 0.42 | 0.98 | 1.57 | 1.24 | 1.22 | 0.52 | 0.98 | 0.80 | 12.21 | |||||||||||||
1990 | 0.32 | 2.25 | 0.98 | 2.02 | 1.71 | 1.62 | 0.78 | 0.63 | 0.76 | 2.53 | 1.31 | 1.04 | 15.95 | |||||||||||||
1991 | 1.09 | 0.28 | 1.70 | 0.80 | 0.35 | 1.52 | 1.24 | 1.03 | 1.47 | 0.83 | 1.74 | 0.82 | 12.87 | |||||||||||||
1992 | 0.57 | 1.00 | 1.42 | a | 1.82 | 2.54 | 0.90 | 2.93 | 0.70 | 1.31 | 1.21 | 1.20 | 1.08 | 16.68 | ||||||||||||
1993 | 1.67 | 1.16 | 1.91 | 3.43 | a | 1.29 | 0.53 | 0.71 | 1.36 | 1.58 | 3.11 | a | 1.30 | 0.65 | 18.70 | |||||||||||
1994 | 0.52 | 1.02 | a | 0.60 | 1.44 | b | 0.06 | b | 0.53 | a | 0.01 | 2.42 | c | 0.90 | d | 1.06 | c | 2.05 | f | 0.57 | 9.13 | a | ||||
1995 | 1.16 | d | 0.86 | a | 1.24 | c | 1.35 | d | ----- | z | 1.48 | c | 0.65 | a | 0.68 | b | 2.43 | b | 1.64 | b | 1.44 | c | 0.61 | 13.54 | a | |
1996 | 2.13 | b | 1.76 | e | 0.55 | c | 1.63 | b | 1.62 | c | 1.16 | b | 1.07 | d | 0.25 | b | 1.63 | c | 2.11 | c | 2.82 | d | 1.02 | f | 16.73 | a |
1997 | 1.97 | c | 0.65 | d | 0.14 | c | 3.27 | c | 2.92 | b | 0.91 | c | 1.53 | b | 1.53 | b | 5.19 | c | 2.16 | b | 0.71 | d | 0.76 | b | 21.74 | |
1998 | 0.83 | f | 1.25 | d | 1.90 | c | 0.97 | d | 0.70 | c | 2.81 | c | 1.66 | b | 0.29 | c | 0.58 | c | 2.49 | c | 1.07 | b | 1.16 | b | 14.88 | a |
1999 | 1.29 | d | 0.98 | d | 0.76 | b | 3.44 | d | 1.88 | e | 1.12 | a | 1.35 | f | 1.72 | b | 0.83 | d | 0.85 | 0.69 | d | 0.73 | d | 14.29 | a | |
2000 | 1.17 | b | 2.00 | a | 1.48 | b | 1.04 | d | 1.39 | c | 0.40 | b | 0.89 | 1.72 | f | 2.25 | i | 0.76 | 1.66 | h | 1.17 | h | 9.13 | d | ||
2001 | 0.85 | f | 1.13 | e | 1.10 | f | 1.17 | h | 1.92 | g | 0.63 | 0.91 | b | 1.34 | b | 0.91 | d | 1.34 | 1.29 | 0.55 | 8.10 | d | ||||
2002 | 0.67 | 0.24 | c | 1.19 | d | 1.20 | 0.13 | 0.26 | 0.73 | 1.96 | a | 1.57 | 1.34 | 0.87 | a | 1.03 | 11.19 | |||||||||
2003 | 0.66 | 2.00 | c | 1.57 | b | 1.30 | 0.98 | a | 1.28 | 0.21 | 0.93 | 1.42 | 0.18 | a | 2.52 | 1.09 | a | 14.14 | ||||||||
2004 | 0.76 | 0.98 | a | 0.42 | 1.83 | 1.40 | 1.03 | 1.01 | 0.69 | c | 2.43 | a | 1.37 | 1.50 | a | 0.11 | a | 13.53 | ||||||||
2005 | 1.40 | 1.24 | 1.67 | a | 1.68 | 1.51 | 3.63 | 0.71 | 1.27 | 1.50 | 2.40 | 1.19 | 0.59 | 18.79 | ||||||||||||
2006 | 0.98 | 0.39 | 2.44 | 1.06 | 0.56 | 0.24 | 1.14 | 2.11 | 3.49 | a | 3.18 | a | 0.93 | 0.66 | 17.18 | |||||||||||
2007 | 1.79 | 1.67 | 0.97 | 0.82 | 1.56 | 0.33 | 0.77 | 1.14 | 3.89 | 2.49 | 0.26 | 4.13 | 19.82 | |||||||||||||
2008 | 1.88 | 1.42 | 1.24 | 0.75 | 3.12 | b | 0.86 | 0.18 | 0.65 | 1.97 | 1.04 | 1.10 | 2.18 | 16.39 | ||||||||||||
2009 | 1.90 | 0.38 | 2.07 | i | 2.23 | 1.79 | 3.11 | 1.08 | 1.01 | 1.26 | 1.11 | 1.19 | 1.50 | 16.56 | a | |||||||||||
2010 | 0.56 | d | 0.19 | f | 1.18 | h | 2.96 | d | 0.83 | h | 1.38 | h | 1.25 | j | 1.34 | j | 0.39 | p | 1.81 | m | 1.19 | k | 3.13 | n | 3.52 | j |
2011 | 0.91 | e | 1.50 | e | 1.78 | d | 3.64 | S | 3.37 | f | 0.69 | d | 1.76 | f | 1.31 | d | 0.60 | h | 1.18 | j | 1.69 | k | 0.38 | S | 6.19 | g |
2012 | 0.45 | g | 1.21 | f | 0.46 | S | 0.70 | g | 0.12 | h | 0.16 | S | 1.12 | e | 0.47 | f | 1.72 | j | 1.03 | k | 0.45 | h | 2.80 | i | 1.12 | k |
2013 | 1.14 | f | 0.74 | e | 0.78 | h | 2.91 | d | 1.60 | g | 0.00 | e | 0.37 | f | 0.38 | S | 3.36 | i | 2.58 | e | 1.18 | g | 1.46 | g | 6.61 | g |
2014 | 1.21 | f | 0.39 | f | 1.67 | f | 1.02 | e | 2.02 | S | 0.63 | e | 0.70 | f | 3.95 | e | 2.04 | e | 1.69 | e | 1.16 | j | 1.43 | i | 11.35 | f |
2015 | 0.39 | S | 0.88 | S | 1.14 | e | 1.82 | h | 3.93 | i | 0.20 | f | 1.89 | e | 0.92 | e | 0.88 | e | 1.15 | S | 1.50 | i | 2.60 | g | 5.98 | g |
2016 | 1.17 | g | 1.46 | e | 1.46 | e | 2.42 | S | 1.75 | f | 0.23 | d | 1.15 | f | 0.75 | e | 1.28 | f | 0.81 | e | 0.89 | h | 1.58 | i | 7.13 | f |
2017 | 3.09 | f | 1.81 | f | 0.81 | d | 2.83 | f | 1.35 | f | 0.42 | S | 1.12 | j | 0.23 | f | 1.91 | S | 3.18 | d | 1.12 | g | 0.99 | j | 5.90 | i |
2018 | 1.25 | f | 1.34 | e | 1.46 | g | 1.72 | f | 1.36 | e | 0.11 | f | 0.19 | e | 1.40 | f | 0.21 | f | 2.70 | d | 0.60 | f | 0.89 | j | 5.59 | h |
2019 | 1.83 | e | 1.04 | h | 2.70 | e | 1.60 | f | 1.72 | e | 2.66 | e | 0.38 | i | 0.45 | S | 0.58 | g | 1.53 | d | 1.25 | f | 2.09 | j | 10.89 | f |
2020 | 1.84 | d | 1.47 | S | 1.81 | e | 1.20 | d | 1.21 | g | 1.25 | d | 1.14 | e | 0.54 | i | 0.35 | g | 0.75 | S | 0.52 | j | 1.39 | f | 9.46 | e |
2021 | 0.56 | f | 0.76 | e | 1.34 | g | 0.63 | S | 1.39 | i | 0.31 | d | 0.25 | S | 1.37 | h | 1.13 | f | 1.72 | i | 0.74 | m | 1.84 | l | 1.07 | j |
2022 | 1.36 | i | 0.87 | g | 1.39 | h | 1.15 | i | 2.47 | j | 0.69 | i | 1.00 | m | 0.61 | t | 1.92 | S | 2.29 | b | 1.93 | n | 2.64 | l | 2.29 | k |
2023 | 3.36 | j | 0.83 | i | 2.26 | S | 1.27 | m | 0.51 | g | 1.47 | S | 0.43 | k | 0.97 | S | 0.45 | f | 1.80 | l | 0.86 | h | 1.06 | l | 0.00 | l |
2024 | 1.20 | f | 2.27 | g | 0.69 | k | 0.24 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.17 | 1.15 | 1.47 | 1.66 | 1.54 | 1.12 | 1.18 | 1.24 | 1.64 | 1.77 | 1.36 | 1.06 | 16.75 | |||||||||||||
S.D. | 0.58 | 0.54 | 0.63 | 0.87 | 0.91 | 0.92 | 0.72 | 0.74 | 1.07 | 0.98 | 0.68 | 0.82 | 3.45 | |||||||||||||
SKEW | 0.26 | 0.24 | 0.04 | 0.58 | 0.71 | 1.25 | 0.83 | 1.32 | 1.37 | 0.58 | 0.83 | 2.48 | 0.34 | |||||||||||||
MAX | 2.34 | 2.25 | 2.70 | 3.44 | 3.95 | 3.63 | 3.00 | 3.95 | 5.19 | 4.52 | 2.94 | 4.13 | 24.97 | |||||||||||||
MIN | 0.28 | 0.24 | 0.14 | 0.35 | 0.06 | 0.00 | 0.01 | 0.19 | 0.12 | 0.18 | 0.26 | 0.11 | 11.16 | |||||||||||||
YRS | 34 | 38 | 36 | 36 | 34 | 40 | 36 | 38 | 35 | 42 | 31 | 31 | 24 |