YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.71 | 9.71 | k | |
1972 | -7.97 | -1.83 | 11.10 | 24.73 | 43.94 | 48.87 | 55.26 | 55.26 | 44.77 | 31.97 | 23.90 | 3.77 | 27.81 | |||||||||||||
1973 | 4.23 | 5.43 | 26.77 | 30.27 | 39.42 | 52.97 | 56.42 | 56.45 | 46.57 | 41.00 | 24.83 | 7.03 | 32.62 | |||||||||||||
1974 | 0.39 | -5.11 | 14.71 | 29.93 | 38.52 | 46.97 | 57.39 | 52.29 | 40.67 | 33.90 | 25.30 | 13.29 | 29.02 | |||||||||||||
1975 | 3.48 | 6.18 | 9.90 | 23.10 | 45.13 | 53.10 | 58.26 | 53.39 | 42.50 | 37.42 | 26.60 | 7.42 | 30.54 | |||||||||||||
1976 | -2.55 | 10.03 | 14.52 | 32.20 | 38.42 | 53.30 | 55.77 | 50.90 | 40.40 | 29.81 | 14.00 | -6.14 | b | 27.56 | ||||||||||||
1977 | -10.55 | 5.07 | 22.45 | 32.87 | 48.94 | 49.40 | 58.16 | 48.81 | 48.41 | a | 34.68 | 23.93 | 9.96 | e | 31.01 | |||||||||||
1978 | -0.39 | -3.78 | a | 10.39 | 28.43 | 42.94 | 49.77 | 55.87 | 55.90 | a | 50.07 | 35.58 | 19.40 | 2.00 | 28.85 | |||||||||||
1979 | -9.06 | -4.89 | 15.52 | 27.21 | a | 38.45 | 49.43 | 56.32 | 52.81 | 46.40 | 34.74 | 21.60 | 10.26 | 28.23 | ||||||||||||
1980 | 0.87 | -1.14 | 10.87 | 31.17 | 43.29 | 49.93 | 57.19 | 56.65 | 45.07 | 31.71 | 23.93 | 5.65 | 29.60 | |||||||||||||
1981 | -1.45 | 8.64 | 18.52 | 32.03 | 39.48 | 52.63 | 56.58 | 57.00 | 45.17 | 33.16 | 26.77 | 8.45 | 31.42 | |||||||||||||
1982 | -8.97 | -0.50 | 15.63 | a | 23.67 | 47.55 | 45.17 | 57.81 | 52.55 | 47.03 | 37.61 | 22.96 | c | 15.94 | 29.70 | |||||||||||
1983 | 8.10 | 17.00 | 20.06 | 27.23 | 37.13 | 51.50 | 60.74 | 59.03 | 49.43 | 36.58 | 26.13 | -2.20 | a | 32.56 | ||||||||||||
1984 | -0.35 | 14.72 | 8.00 | 32.47 | 39.10 | 54.70 | 55.00 | 58.42 | 44.53 | 39.71 | 23.45 | a | 8.03 | 31.48 | ||||||||||||
1985 | -1.06 | 1.64 | 21.03 | 32.80 | 45.42 | 48.77 | 53.74 | 53.52 | 46.83 | 35.10 | a | 17.83 | a | -2.55 | 29.42 | |||||||||||
1986 | 2.65 | 3.86 | 18.30 | a | 34.97 | 44.87 | 49.83 | 58.42 | 51.26 | 48.07 | 35.68 | 18.73 | 13.13 | 31.65 | ||||||||||||
1987 | 9.39 | 12.71 | 21.84 | 31.97 | 42.84 | 51.53 | 57.29 | 53.45 | 45.60 | 29.26 | 25.60 | 16.55 | 33.17 | |||||||||||||
1988 | -1.03 | -3.14 | 14.63 | a | 28.37 | 41.45 | 50.07 | 55.23 | 55.97 | 46.00 | 30.03 | 26.10 | 5.74 | 29.12 | ||||||||||||
1989 | 8.00 | -7.14 | 10.40 | a | 26.07 | 38.16 | 47.30 | 55.19 | 53.19 | 42.87 | 34.65 | 17.50 | -3.61 | 26.88 | ||||||||||||
1990 | 9.97 | 5.59 | a | 17.67 | a | 31.67 | 37.48 | 49.62 | a | 53.32 | 52.90 | 47.10 | 32.74 | 24.90 | 6.84 | 30.82 | ||||||||||
1991 | -2.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -2.26 | k | |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.54 | q | 49.55 | 49.39 | 44.07 | 32.48 | 21.13 | 9.26 | 34.31 | f | ||||||
1993 | 0.70 | a | -0.04 | 11.61 | 24.40 | 40.42 | 49.10 | a | 56.48 | 55.57 | a | 39.62 | a | 30.58 | 17.28 | a | 10.16 | 27.99 | ||||||||
1994 | -13.23 | -3.57 | 14.63 | a | 24.72 | a | 38.47 | a | 52.48 | a | 54.32 | c | 52.10 | 49.47 | 36.48 | 23.14 | a | 12.97 | 28.50 | |||||||
1995 | 4.45 | 0.54 | 16.45 | 22.37 | 38.29 | 55.13 | 56.65 | 59.83 | a | 42.70 | 36.13 | a | 9.60 | 2.53 | a | 28.72 | ||||||||||
1996 | -8.19 | -4.79 | 3.26 | 18.67 | 35.27 | a | 50.72 | a | 52.68 | 54.10 | b | 48.23 | 33.21 | b | 16.42 | d | 9.90 | a | 25.79 | |||||||
1997 | -1.19 | d | 3.43 | 10.71 | 24.37 | 33.40 | a | 52.97 | 55.39 | 51.29 | 47.10 | 34.03 | 18.59 | a | 15.63 | a | 28.81 | |||||||||
1998 | 9.50 | c | 19.92 | b | 14.65 | 30.90 | 45.63 | a | 51.66 | a | 55.48 | 57.00 | a | 47.93 | b | 35.65 | 26.45 | a | 10.97 | a | 33.81 | |||||
1999 | -3.59 | b | 8.61 | 13.26 | 30.67 | 42.63 | d | 52.13 | 59.07 | b | 53.00 | c | 44.23 | 30.81 | 26.24 | a | 9.53 | a | 30.55 | |||||||
2000 | -2.34 | b | 4.43 | a | 20.40 | a | 27.20 | 40.90 | a | 49.00 | 54.33 | a | 53.74 | 43.75 | b | 35.17 | b | 23.38 | a | -4.68 | 28.77 | |||||
2001 | 4.50 | a | -2.07 | 11.35 | 30.13 | 43.77 | 52.00 | a | 55.68 | 57.76 | f | 46.68 | e | 33.23 | a | 30.97 | a | 16.79 | c | 29.37 | a | |||||
2002 | 10.71 | 10.32 | 5.20 | a | 25.69 | a | 34.59 | d | 53.81 | c | 59.87 | a | 54.23 | a | 48.66 | a | 29.65 | 20.04 | c | 10.74 | 30.29 | |||||
2003 | -2.10 | -7.46 | 10.33 | a | 23.07 | b | 37.87 | 49.50 | 54.97 | 56.81 | 46.43 | b | 33.35 | 21.23 | 11.77 | 27.98 | ||||||||||
2004 | -5.65 | 0.93 | 16.87 | a | 26.27 | 37.03 | a | 48.20 | 53.97 | 47.48 | d | 49.13 | 35.35 | ----- | z | 5.32 | 28.63 | a | ||||||||
2005 | -2.10 | 8.29 | 8.20 | a | 30.90 | a | 38.71 | 56.00 | a | 57.26 | 55.20 | a | 48.48 | a | 38.28 | b | 21.90 | a | 9.63 | a | 30.90 | |||||
2006 | 14.61 | -1.25 | 16.22 | d | 31.00 | a | 42.87 | a | 50.27 | 57.36 | c | 54.39 | 42.73 | 29.71 | 25.93 | 15.30 | a | 31.59 | ||||||||
2007 | 6.81 | -2.52 | a | 17.94 | 26.70 | 43.06 | 51.67 | 55.45 | b | 54.87 | 46.24 | a | 39.61 | 20.90 | 4.28 | b | 30.42 | |||||||||
2008 | 2.71 | -3.00 | e | 6.78 | h | 25.39 | b | 35.40 | a | 51.24 | a | 54.88 | g | 50.78 | d | 47.03 | 34.81 | 23.42 | d | -3.62 | e | 26.42 | b | |||
2009 | -8.17 | a | 3.19 | a | 12.68 | 27.14 | b | 38.39 | 48.89 | b | 50.84 | 51.37 | a | 47.79 | a | 31.81 | e | 29.11 | c | 5.74 | h | 30.28 | a | |||
2010 | 6.42 | 5.25 | 19.93 | c | 32.48 | c | 43.90 | a | 52.33 | 58.92 | f | 58.03 | a | 43.00 | b | 35.48 | b | 23.62 | d | ----- | z | 32.04 | b | |||
2011 | -5.50 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.40 | 2.80 | 14.61 | 28.19 | 40.62 | 50.86 | 55.92 | 54.02 | 45.81 | 34.24 | 22.51 | 7.45 | 29.86 | |||||||||||||
S.D. | 6.63 | 6.78 | 5.08 | 3.77 | 3.72 | 2.35 | 2.28 | 2.86 | 2.66 | 2.96 | 4.28 | 6.27 | 1.88 | |||||||||||||
SKEW | 0.02 | 0.64 | 0.05 | -0.35 | 0.20 | -0.00 | -0.51 | -0.08 | -0.54 | 0.20 | -0.78 | -0.60 | 0.10 | |||||||||||||
MAX | 14.61 | 19.92 | 26.77 | 34.97 | 48.94 | 56.00 | 60.74 | 59.83 | 50.07 | 41.00 | 30.97 | 16.79 | 33.81 | |||||||||||||
MIN | -13.23 | -7.46 | 3.26 | 18.67 | 33.40 | 45.17 | 49.55 | 47.48 | 39.62 | 29.26 | 9.60 | -6.14 | 25.79 | |||||||||||||
YRS | 38 | 37 | 36 | 37 | 37 | 37 | 36 | 37 | 38 | 38 | 37 | 37 | 32 |