YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1990 | ----- | z | 37.39 | 47.55 | 55.76 | a | 61.76 | b | 68.79 | a | 76.47 | a | 73.58 | 67.39 | b | 54.39 | 41.93 | b | 27.06 | 55.64 | a | |||||
1991 | 33.61 | c | ----- | z | 42.84 | ----- | z | 57.42 | 66.81 | c | 75.77 | a | 73.70 | a | 68.13 | ----- | z | ----- | z | 36.06 | 56.79 | d | ||||
1992 | 34.20 | a | 44.00 | b | 47.81 | 55.87 | 64.45 | 68.03 | a | 74.55 | 75.83 | a | 67.14 | a | 57.50 | a | 40.67 | 33.66 | b | 55.31 | ||||||
1993 | 36.00 | a | 40.78 | a | 48.43 | c | 53.48 | a | 62.70 | a | 68.27 | 73.67 | a | 74.00 | f | 64.22 | c | 54.73 | a | 38.41 | a | 33.93 | b | 52.24 | a | |
1994 | 35.90 | 36.21 | d | 49.43 | a | 54.19 | c | 62.41 | b | 73.28 | a | 77.30 | a | 77.83 | a | 67.48 | e | 53.34 | b | 37.79 | a | 35.57 | a | 55.06 | ||
1995 | 39.28 | b | 44.37 | a | 45.81 | d | 50.68 | b | 58.16 | 67.61 | b | 75.79 | c | 77.17 | b | ----- | z | 54.17 | b | 45.60 | 36.65 | e | 54.12 | a | ||
1996 | 36.57 | a | 42.85 | c | 46.93 | c | 55.08 | e | 64.08 | e | 71.31 | d | 80.62 | b | 77.87 | a | 67.46 | b | 53.90 | b | 45.46 | d | 37.82 | c | 56.66 | |
1997 | 38.90 | b | 40.48 | c | 47.79 | b | 52.96 | c | 66.48 | b | 72.23 | d | 73.84 | 76.00 | c | 70.61 | b | 54.45 | 44.13 | 35.96 | c | 56.15 | ||||
1998 | 38.07 | a | 40.31 | b | 46.29 | c | 49.23 | 57.19 | 66.07 | b | 77.24 | b | 77.93 | a | 67.79 | a | 53.36 | c | 42.10 | a | 34.58 | 54.18 | ||||
1999 | 37.20 | a | 40.46 | 47.03 | 48.30 | g | 61.75 | c | 67.82 | b | 75.00 | c | 73.46 | e | 67.82 | b | 54.56 | d | 44.52 | e | 35.96 | e | 55.05 | a | ||
2000 | 39.08 | f | 42.81 | c | 46.79 | b | 56.81 | d | 66.36 | c | 73.12 | d | 75.76 | f | 77.57 | c | 66.69 | d | 56.50 | a | 38.23 | d | 37.00 | d | 56.19 | b |
2001 | 35.04 | g | 39.50 | f | 49.15 | e | 52.00 | f | 67.00 | c | 70.92 | f | 75.38 | e | 76.59 | i | 68.42 | d | 57.21 | c | 47.67 | i | 33.17 | h | 63.44 | g |
2002 | ----- | z | 36.26 | i | 43.52 | h | 58.78 | l | 62.52 | h | 73.37 | k | 82.39 | m | 76.54 | c | 69.46 | f | 54.88 | e | 43.67 | f | 36.63 | d | 56.02 | i |
2003 | 40.58 | 41.15 | b | 48.27 | a | 53.32 | e | 64.46 | g | 75.00 | j | 81.88 | f | 77.23 | e | 70.96 | d | 61.61 | c | 42.72 | e | 36.36 | c | 52.47 | c | |
2004 | 35.50 | c | 38.96 | c | 54.07 | d | 57.48 | e | 65.62 | g | 73.58 | d | 78.95 | i | 76.33 | a | 67.21 | a | 57.77 | 43.38 | a | 37.10 | 54.14 | b | ||
2005 | 42.06 | 43.69 | b | 47.71 | c | 51.27 | h | 64.12 | g | 70.52 | c | 80.52 | b | 77.58 | g | 68.04 | e | 58.20 | a | 46.82 | b | 36.27 | a | 54.87 | c | |
2006 | 38.18 | c | 37.04 | e | 43.47 | a | 52.52 | i | 68.30 | a | 76.86 | b | 82.74 | 76.15 | d | 67.86 | i | 56.57 | j | 44.61 | l | 35.12 | e | 57.23 | d | |
2007 | 33.29 | g | 41.22 | s | 49.47 | n | 56.15 | d | 66.03 | a | 73.86 | a | 81.15 | k | 77.76 | f | 70.58 | f | 56.06 | n | 47.95 | i | 34.33 | g | 65.35 | i |
2008 | 35.82 | c | 40.00 | q | 46.12 | f | 52.41 | m | 61.80 | p | 72.64 | p | 81.71 | q | 79.50 | u | 71.53 | o | 58.05 | i | 48.54 | b | 35.65 | k | 42.18 | j |
2009 | 37.89 | l | 38.95 | f | 45.82 | c | 52.00 | b | 69.96 | e | 71.11 | c | 81.87 | a | 76.72 | b | 71.79 | k | 53.60 | a | 45.89 | b | 33.96 | e | 58.99 | c |
2010 | 37.11 | c | 41.57 | g | 46.35 | e | 50.74 | c | 58.36 | f | 73.57 | g | 82.56 | d | 76.14 | c | 67.35 | g | 58.64 | f | 42.00 | e | 40.23 | a | 53.59 | e |
2011 | 36.11 | c | 38.26 | e | 46.58 | g | 53.48 | c | 58.22 | d | 70.48 | e | 78.08 | g | 77.65 | h | 69.69 | d | 57.48 | b | 42.90 | 34.46 | e | 51.23 | c | |
2012 | 37.26 | 42.03 | 47.72 | b | 56.03 | 67.72 | b | 73.43 | b | 77.50 | e | 80.45 | b | 72.85 | d | 58.47 | a | 47.07 | c | 39.18 | c | 58.31 | ||||
2013 | 32.80 | f | 38.62 | d | 50.25 | k | 56.08 | f | 65.17 | a | 75.64 | e | 82.17 | h | 75.52 | h | 68.07 | c | 53.10 | j | 45.25 | n | 33.86 | j | 61.88 | h |
2014 | 38.64 | i | 42.80 | c | 49.50 | g | 55.59 | c | 64.59 | i | 73.78 | c | 81.29 | j | 75.24 | f | 72.12 | d | 59.75 | c | 45.08 | d | 41.32 | c | 55.78 | e |
2015 | 40.44 | f | 46.96 | e | 53.93 | b | 55.95 | h | 60.77 | e | 76.09 | h | 74.95 | l | 78.81 | j | 72.76 | i | 61.63 | l | 42.71 | f | 34.95 | l | 53.89 | i |
2016 | 37.50 | g | 42.28 | 50.45 | 55.13 | 61.97 | 77.83 | 77.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.53 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.20 | 41.07 | 47.79 | 54.11 | 63.40 | 71.45 | 77.55 | 76.50 | 68.45 | 56.10 | 43.33 | 35.95 | 55.95 | |||||||||||||
S.D. | 2.17 | 2.77 | 2.71 | 2.31 | 3.79 | 3.34 | 3.12 | 1.77 | 2.08 | 2.39 | 3.06 | 2.85 | 1.45 | |||||||||||||
SKEW | 0.53 | 0.06 | 0.71 | -0.58 | -0.15 | 0.13 | 0.51 | -0.05 | 0.49 | 0.66 | -0.33 | -1.02 | 0.52 | |||||||||||||
MAX | 42.06 | 46.96 | 54.07 | 57.48 | 69.96 | 77.83 | 82.74 | 80.45 | 72.85 | 61.61 | 48.54 | 41.32 | 58.31 | |||||||||||||
MIN | 33.61 | 36.21 | 42.84 | 49.23 | 57.19 | 66.07 | 73.67 | 73.46 | 64.22 | 53.34 | 37.79 | 27.06 | 54.18 | |||||||||||||
YRS | 17 | 20 | 21 | 18 | 20 | 21 | 16 | 17 | 18 | 19 | 19 | 21 | 6 |