YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | 65.00 | g | 71.43 | 78.71 | c | 96.86 | a | 95.92 | f | 87.54 | g | 80.52 | a | 71.73 | a | 60.07 | c | 63.28 | b | 74.66 | e | |
1981 | 55.97 | a | 63.75 | 62.56 | d | 77.04 | d | 79.97 | a | 92.29 | b | 91.10 | b | 83.93 | b | 79.73 | d | 73.43 | c | 69.19 | c | 63.64 | f | 75.36 | a | |
1982 | 58.41 | d | 56.65 | b | 68.26 | d | 72.76 | e | 80.35 | 89.77 | 90.92 | e | 88.50 | g | 82.43 | b | 72.93 | c | 60.42 | d | 50.30 | d | 71.20 | a | ||
1983 | 54.68 | c | 58.41 | a | 63.52 | b | 68.00 | g | 79.21 | c | 90.44 | c | 91.48 | h | 91.52 | j | 86.04 | e | 72.86 | b | 65.38 | i | 56.81 | e | 70.25 | d |
1984 | 52.72 | f | 61.82 | g | 65.79 | c | 74.40 | e | 85.10 | a | 86.38 | d | 89.79 | c | 82.10 | b | 78.74 | g | 66.67 | d | 64.55 | j | 56.29 | j | 78.60 | e |
1985 | 51.93 | d | 57.12 | b | 65.83 | a | 74.63 | 80.58 | 88.30 | 89.72 | b | 89.50 | c | 79.89 | c | 72.48 | b | 65.96 | b | 57.97 | a | 72.83 | ||||
1986 | 61.42 | 59.88 | c | 68.19 | 76.70 | 80.23 | a | 81.64 | b | 86.16 | 85.16 | 79.90 | 69.41 | b | 59.31 | a | 51.37 | a | 71.62 | |||||||
1987 | 52.60 | a | 54.46 | b | 61.52 | 70.50 | 76.00 | b | 85.43 | 89.24 | b | 85.83 | a | 81.07 | 77.39 | c | 62.37 | 53.52 | 70.83 | |||||||
1988 | 53.23 | a | 60.68 | a | 66.52 | 73.07 | 78.79 | c | 86.76 | a | 85.61 | c | 82.67 | a | 81.28 | a | 77.37 | a | 66.58 | d | 55.48 | d | 72.33 | |||
1989 | 58.16 | 56.85 | a | 71.45 | 79.47 | 85.33 | a | 88.59 | a | 90.12 | e | 85.14 | b | 81.52 | c | 75.69 | b | 66.10 | a | 55.10 | 74.46 | |||||
1990 | 57.29 | 59.32 | 64.13 | 73.03 | 79.10 | b | 95.57 | 85.42 | 82.07 | d | 79.24 | a | 75.90 | a | 67.57 | b | 57.96 | d | 73.05 | |||||||
1991 | 53.45 | b | 60.75 | 65.57 | c | 75.50 | d | 83.42 | 88.89 | c | 83.41 | d | 83.03 | 76.48 | a | 75.63 | a | 58.40 | 51.29 | c | 71.32 | |||||
1992 | 50.39 | 58.10 | 65.27 | a | 75.03 | 74.87 | a | 85.14 | a | 89.03 | a | 86.23 | e | 85.59 | c | 77.17 | b | 59.18 | b | 54.35 | e | 71.70 | ||||
1993 | 56.17 | b | 56.67 | a | 65.87 | a | 74.34 | a | 80.48 | b | 89.63 | c | 89.61 | c | 84.63 | a | 83.86 | a | 73.83 | a | 61.90 | 59.42 | e | 73.04 | ||
1994 | 57.63 | a | 59.63 | a | 65.31 | b | 73.86 | a | 78.77 | a | 93.41 | c | 92.72 | b | 88.80 | a | 84.04 | d | 74.40 | a | 64.11 | b | 61.64 | f | 75.70 | a |
1995 | 56.74 | 66.83 | e | 67.00 | b | 73.21 | k | 81.00 | b | 86.96 | f | 91.03 | a | 89.71 | 81.10 | a | 78.23 | a | 69.21 | a | 56.36 | c | 73.72 | b | ||
1996 | 59.57 | c | 64.55 | 64.07 | c | 75.79 | a | 90.04 | c | 89.65 | d | 86.23 | a | 86.21 | b | 79.74 | c | 73.75 | c | 65.96 | b | 60.81 | d | 74.70 | ||
1997 | 52.23 | 53.04 | 70.43 | c | 66.90 | 77.83 | a | 85.97 | 90.71 | c | 86.03 | b | 83.96 | c | 73.52 | b | 60.96 | c | 49.79 | b | 70.95 | |||||
1998 | 59.87 | a | 56.56 | a | 62.93 | a | 70.54 | b | 86.43 | a | 92.39 | b | 91.30 | a | 85.62 | b | 85.34 | a | 72.57 | c | 66.39 | b | 57.29 | c | 73.94 | |
1999 | 62.14 | c | 67.00 | b | 66.60 | a | 72.17 | a | 79.45 | b | 86.96 | b | 86.39 | c | 87.07 | c | 81.00 | c | 77.26 | d | 71.70 | c | 53.83 | a | 74.30 | |
2000 | 62.79 | b | 67.07 | a | 67.97 | a | 77.46 | b | 88.23 | e | 86.67 | 91.11 | d | 91.23 | i | 88.89 | b | 72.44 | d | 55.86 | b | 54.67 | a | 73.92 | a | |
2001 | 51.45 | b | 61.68 | 62.50 | a | 77.00 | a | 82.33 | a | 91.04 | c | 91.62 | b | 87.28 | b | 85.62 | f | 77.81 | 64.29 | b | 56.12 | e | 73.01 | a | ||
2002 | 58.43 | a | 60.28 | c | 67.22 | d | 77.92 | e | 84.19 | d | 93.27 | d | 88.69 | b | 92.16 | f | 82.96 | c | 70.54 | c | 60.93 | c | 54.22 | d | 72.60 | a |
2003 | 63.48 | d | 58.30 | a | 66.52 | b | 75.89 | b | 85.77 | e | 88.00 | d | 94.07 | d | 89.07 | b | 85.14 | b | 79.04 | c | 66.04 | c | 59.70 | a | 75.92 | |
2004 | 57.52 | b | 57.47 | l | 67.04 | h | 70.30 | c | 83.93 | b | 88.86 | b | 88.18 | c | 82.36 | f | 78.30 | 71.21 | b | 57.10 | 57.00 | 72.49 | c | |||
2005 | 60.39 | 56.50 | 62.68 | 71.93 | 78.71 | 88.27 | 88.13 | 81.52 | 82.50 | 70.84 | 67.83 | 59.19 | 72.37 | |||||||||||||
2006 | 62.10 | 63.54 | 73.71 | x | 79.13 | 84.94 | m | 89.62 | a | 87.00 | n | ----- | z | ----- | z | 71.67 | g | 66.17 | 55.69 | b | 69.37 | f | ||||
2007 | 49.16 | 61.46 | 68.28 | f | 71.90 | 74.77 | a | 85.24 | e | 87.42 | s | 86.44 | f | 81.90 | t | ----- | z | ----- | z | ----- | z | 68.51 | g | |||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.52 | 62.52 | k | |
2009 | 63.94 | 68.29 | 69.58 | 74.03 | 84.50 | a | 88.60 | 90.87 | 90.48 | 81.93 | 75.97 | 69.30 | 51.35 | 75.74 | ||||||||||||
2010 | 56.06 | 54.96 | 66.29 | 73.13 | 80.35 | 93.47 | 86.42 | 88.39 | 86.20 | 76.77 | 66.37 | 63.55 | 74.33 | |||||||||||||
2011 | 60.19 | 59.79 | 74.65 | 79.87 | 81.23 | 95.17 | 94.10 | 96.03 | 86.80 | 78.52 | 65.90 | 48.68 | 76.74 | |||||||||||||
2012 | 62.90 | 58.90 | 72.29 | 79.70 | 82.48 | 93.83 | 89.74 | 91.00 | 84.83 | 76.71 | 70.90 | 59.39 | 76.89 | |||||||||||||
2013 | 55.10 | 60.46 | 69.68 | 74.77 | 82.50 | a | 94.34 | a | 85.81 | 88.13 | 81.10 | 74.13 | 62.27 | 56.58 | 73.74 | |||||||||||
2014 | 61.33 | a | 63.89 | 68.32 | 73.90 | a | 80.61 | 92.00 | 89.45 | 86.32 | 78.63 | 76.87 | 64.60 | 60.55 | 74.71 | |||||||||||
2015 | 53.52 | 62.50 | 67.35 | 71.40 | 76.97 | 87.43 | 90.19 | 92.39 | 88.83 | 73.23 | 66.28 | a | 58.84 | 74.08 | ||||||||||||
2016 | 53.84 | 65.48 | 71.10 | 72.57 | 79.10 | 90.90 | 96.68 | 85.84 | 80.90 | 80.68 | 65.33 | 61.74 | 75.35 | |||||||||||||
2017 | 57.16 | 66.89 | 74.77 | 76.30 | 81.10 | 90.97 | 91.33 | a | 84.61 | 83.13 | 77.16 | 72.90 | 62.77 | 76.59 | ||||||||||||
2018 | 59.90 | 64.75 | 68.26 | 78.73 | 87.03 | 93.97 | 90.45 | 89.94 | 82.97 | 70.55 | 62.03 | 55.55 | 75.34 | |||||||||||||
2019 | 57.58 | 61.39 | 65.29 | 74.54 | q | 79.03 | 88.40 | ----- | z | 92.21 | l | ----- | z | ----- | z | ----- | z | ----- | z | 70.34 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 57.26 | 60.73 | 67.01 | 74.53 | 81.28 | 89.84 | 89.57 | 86.82 | 82.53 | 74.57 | 64.56 | 56.66 | 73.87 | |||||||||||||
S.D. | 3.95 | 3.97 | 3.28 | 3.05 | 3.55 | 3.40 | 2.80 | 3.31 | 2.96 | 3.08 | 4.15 | 3.97 | 1.83 | |||||||||||||
SKEW | -0.14 | 0.17 | 0.58 | -0.09 | 0.44 | 0.02 | 0.06 | 0.60 | 0.32 | -0.32 | -0.13 | -0.11 | -0.05 | |||||||||||||
MAX | 63.94 | 68.29 | 74.77 | 79.87 | 90.04 | 96.86 | 96.68 | 96.03 | 88.89 | 80.68 | 72.90 | 63.55 | 76.89 | |||||||||||||
MIN | 49.16 | 53.04 | 61.52 | 66.90 | 74.77 | 81.64 | 83.41 | 81.52 | 76.48 | 66.67 | 55.86 | 48.68 | 70.83 | |||||||||||||
YRS | 37 | 36 | 35 | 36 | 38 | 38 | 34 | 30 | 34 | 36 | 35 | 35 | 25 |