YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1987 | 26.97 | b | 31.21 | d | 32.17 | a | 42.47 | 46.23 | e | 55.03 | a | 60.04 | c | 62.59 | d | 52.83 | a | 48.88 | g | 32.31 | d | 28.12 | e | 42.72 | a | |
1988 | 27.96 | e | 33.08 | c | 31.22 | d | 39.93 | b | 44.43 | c | 55.50 | 65.86 | b | 65.50 | a | 52.19 | d | 49.65 | 35.25 | b | 29.07 | d | 44.14 | |||
1989 | 27.73 | e | 31.96 | c | 37.58 | e | 42.33 | c | 46.10 | a | 54.40 | 67.03 | 63.36 | c | 55.07 | b | 46.36 | c | 33.59 | c | 27.89 | d | 44.45 | |||
1990 | 26.75 | c | 27.25 | 33.71 | 39.46 | d | 43.57 | a | 58.00 | b | 65.10 | 59.57 | c | 58.93 | 43.55 | b | 35.93 | b | 30.35 | 43.51 | ||||||
1991 | 30.29 | c | 29.79 | 31.40 | a | 37.00 | b | 40.55 | b | 47.10 | 61.63 | d | 64.03 | 56.97 | 46.68 | 33.69 | a | 33.20 | a | 42.69 | ||||||
1992 | 29.43 | c | 36.85 | b | 37.07 | b | 41.57 | 48.75 | c | 53.63 | 63.12 | e | 64.50 | a | 56.58 | d | 43.48 | d | 28.81 | d | 32.00 | g | 45.80 | a | ||
1993 | 38.27 | a | 34.46 | 36.17 | h | 39.11 | c | 45.50 | i | 50.87 | 62.04 | g | 64.32 | c | 53.50 | d | 45.67 | g | 35.70 | j | 29.21 | b | 44.25 | e | ||
1994 | 28.21 | c | 30.75 | d | 36.42 | e | 41.08 | e | ----- | z | 65.16 | k | 65.21 | c | 67.18 | c | ----- | z | 42.48 | f | 31.11 | k | 32.67 | g | 44.81 | f |
1995 | 32.92 | g | 37.12 | b | 36.08 | e | ----- | z | 42.52 | j | 51.71 | i | 64.39 | h | 68.31 | o | 59.11 | k | 43.83 | h | 36.86 | h | 33.10 | u | 36.60 | j |
1996 | 29.00 | h | 39.23 | g | 36.77 | e | 40.55 | h | 48.75 | g | 57.24 | e | 66.85 | d | 64.33 | m | 56.15 | j | 42.62 | g | 34.95 | j | 25.82 | n | 53.62 | i |
1997 | 31.12 | g | 26.90 | h | 35.86 | i | 39.76 | e | 48.56 | o | 49.55 | s | 59.42 | s | 64.36 | f | 61.54 | b | 42.58 | l | 34.67 | i | 29.65 | k | 50.65 | j |
1998 | 27.33 | m | 31.75 | h | 33.70 | k | 35.33 | f | 41.45 | i | 50.00 | j | 64.89 | d | 65.54 | g | 59.43 | p | 39.19 | o | 31.93 | o | 27.69 | r | 64.89 | k |
1999 | 25.55 | k | 28.41 | f | 31.33 | g | 37.41 | h | 38.11 | v | 50.69 | q | 65.71 | g | 62.75 | g | 56.94 | n | 44.64 | i | 34.88 | m | 24.69 | o | ----- | z |
2000 | 25.86 | i | 30.32 | g | 32.28 | f | 40.30 | j | 47.04 | g | 59.39 | g | ----- | z | ----- | z | 58.24 | m | 47.08 | e | 30.47 | k | 30.85 | r | 47.08 | k |
2001 | 30.35 | k | 29.13 | m | 34.60 | f | 39.65 | d | 47.40 | k | 55.30 | j | ----- | z | 62.11 | c | 56.12 | n | 44.46 | g | 33.92 | e | 25.40 | p | 45.23 | i |
2002 | 28.39 | c | 29.62 | d | 28.45 | k | 39.04 | g | 42.70 | k | 56.08 | e | 65.36 | i | 64.39 | c | 58.78 | g | 41.69 | o | 35.60 | o | 27.68 | i | 44.62 | h |
2003 | 32.59 | n | 36.00 | j | 35.39 | m | 35.25 | n | 44.25 | o | 53.32 | k | 66.67 | m | 65.73 | a | 58.59 | c | 49.52 | f | 34.70 | c | 26.11 | v | 53.01 | i |
2004 | 27.57 | x | 20.50 | w | 39.86 | q | 40.93 | p | 46.62 | o | 53.27 | o | 63.60 | k | 61.55 | k | 60.50 | x | 44.17 | s | 27.75 | v | 27.94 | n | ----- | z |
2005 | ----- | z | ----- | z | 34.33 | m | ----- | z | 50.43 | x | 55.53 | 65.26 | l | 63.95 | j | 65.56 | u | 44.12 | n | 36.06 | n | 28.05 | l | 55.53 | k | |
2006 | 26.14 | q | 32.40 | m | 34.13 | p | 39.44 | c | 48.42 | 61.23 | 67.82 | c | 64.97 | 54.61 | b | 41.18 | t | ----- | z | 25.42 | 51.70 | e | ||||
2007 | 23.68 | 28.79 | ----- | z | 41.31 | a | 49.00 | 58.07 | a | 67.14 | x | 67.16 | f | ----- | z | 43.58 | 39.41 | a | 27.83 | a | 38.96 | d | ||||
2008 | ----- | z | 31.31 | ----- | z | 36.82 | b | ----- | z | ----- | z | ----- | z | 65.10 | 57.33 | 41.06 | m | 36.23 | 31.17 | h | 45.36 | g | ||||
2009 | ----- | z | ----- | z | ----- | z | ----- | z | 51.90 | 55.21 | b | 68.39 | 63.97 | 57.30 | 45.86 | b | 36.33 | 28.03 | 50.88 | d | ||||||
2010 | 30.26 | 33.29 | 35.45 | 38.57 | 42.61 | 55.75 | b | 65.92 | r | 66.29 | 59.92 | q | 50.13 | 33.24 | i | 32.32 | 42.74 | c | ||||||||
2011 | 27.58 | 31.88 | l | 35.56 | d | 42.77 | 42.96 | g | 57.47 | k | 65.62 | b | 66.20 | f | 59.50 | d | 43.31 | b | 33.68 | b | 27.48 | 41.94 | d | |||
2012 | 25.97 | b | 25.64 | d | 20.83 | g | 42.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | 57.90 | ----- | z | ----- | z | ----- | z | 36.50 | i | |
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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.58 | 31.51 | 34.86 | 40.08 | 46.16 | 55.26 | 65.13 | 64.24 | 56.63 | 45.97 | 34.49 | 28.99 | 43.70 | |||||||||||||
S.D. | 3.41 | 3.30 | 2.33 | 1.84 | 3.44 | 3.34 | 2.48 | 1.85 | 2.70 | 2.53 | 2.57 | 2.24 | 0.77 | |||||||||||||
SKEW | 1.69 | 0.12 | -0.55 | -0.23 | -0.00 | -0.79 | -0.73 | -0.89 | -0.09 | 0.45 | -0.34 | 0.57 | -0.43 | |||||||||||||
MAX | 38.27 | 37.12 | 37.58 | 42.77 | 51.90 | 61.23 | 68.39 | 67.18 | 61.54 | 50.13 | 39.41 | 33.20 | 44.45 | |||||||||||||
MIN | 23.68 | 25.64 | 31.22 | 36.82 | 40.55 | 47.10 | 60.04 | 59.57 | 52.19 | 43.31 | 28.81 | 25.42 | 42.69 | |||||||||||||
YRS | 13 | 14 | 11 | 15 | 10 | 14 | 12 | 15 | 14 | 10 | 12 | 11 | 4 |