YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.90 | 63.90 | k | |
1980 | 61.06 | 65.93 | 67.52 | 80.33 | 87.17 | a | 102.71 | i | 109.36 | c | 106.32 | i | 99.15 | d | 84.28 | f | 71.71 | f | 68.07 | c | 79.82 | d | ||||
1981 | 65.20 | a | 68.43 | e | ----- | z | 88.96 | g | 90.73 | e | 105.62 | d | 109.37 | a | 106.81 | d | 97.93 | a | 81.14 | b | ----- | z | 62.96 | d | 87.58 | c |
1982 | 57.39 | 65.47 | k | 69.13 | a | 80.68 | b | 91.00 | d | 100.48 | e | 104.79 | c | 103.92 | f | 93.40 | e | 79.67 | j | 65.62 | i | 55.43 | h | 85.27 | e | |
1983 | 61.26 | l | 64.62 | g | 69.53 | a | 74.82 | h | 92.11 | d | 98.82 | m | 103.69 | e | 99.33 | a | 97.67 | f | 81.86 | j | 68.12 | e | 58.97 | b | 81.96 | f |
1984 | 64.50 | e | 65.44 | b | 74.21 | c | 80.93 | c | 97.71 | j | 98.88 | m | 103.60 | f | 102.14 | j | 100.32 | h | 77.73 | a | 71.29 | f | 57.13 | h | 72.56 | g |
1985 | 59.62 | g | 61.28 | c | 70.90 | b | 91.56 | n | 96.20 | u | 102.33 | c | 105.33 | a | 103.40 | a | 92.00 | g | 83.81 | d | 67.04 | e | 63.26 | l | 84.87 | e |
1986 | 67.58 | e | 68.37 | a | 79.83 | a | 83.00 | q | 92.79 | c | 103.13 | 102.50 | e | 104.77 | a | 91.77 | d | 80.55 | k | 72.27 | h | 61.52 | f | 88.84 | d | |
1987 | 57.90 | j | 64.26 | a | 70.26 | 89.05 | j | 90.31 | b | 103.64 | b | 103.14 | b | 104.43 | a | 97.04 | b | 87.32 | c | 67.23 | d | 55.08 | f | 87.51 | c | |
1988 | 56.37 | a | 67.61 | a | 74.31 | b | 79.79 | b | 91.79 | c | 101.24 | e | 107.45 | 102.74 | d | 93.08 | e | 92.25 | c | 75.78 | g | ----- | z | 86.66 | b | |
1989 | 59.96 | f | 63.53 | i | 78.75 | c | 90.66 | a | 93.86 | b | 101.76 | e | 109.00 | c | 101.67 | d | 99.09 | h | 83.38 | e | 74.80 | e | 64.15 | d | 88.67 | c |
1990 | 60.91 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 105.79 | b | 100.25 | c | 96.84 | e | 84.52 | d | 68.03 | a | ----- | z | 91.09 | g |
1991 | ----- | z | ----- | z | ----- | z | 77.57 | b | 85.62 | e | ----- | z | 106.10 | k | ----- | z | ----- | z | ----- | z | 66.96 | f | 57.73 | a | 73.64 | i |
1992 | 58.16 | ----- | z | 69.27 | e | ----- | z | ----- | z | 98.52 | a | ----- | z | 104.31 | b | 98.15 | d | ----- | z | ----- | z | ----- | z | 85.68 | g | |
1993 | 53.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.61 | k | |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.35 | 63.35 | k | |
1996 | 61.61 | 68.93 | 75.10 | 84.04 | c | 93.13 | ----- | z | 104.08 | g | 107.17 | b | 95.00 | c | ----- | z | 69.08 | d | 57.97 | b | 79.11 | c | ||||
1997 | 57.52 | 66.08 | b | 79.40 | a | 78.83 | a | 97.23 | 99.59 | c | 103.93 | d | 104.67 | a | 95.77 | 84.48 | b | ----- | z | 57.87 | a | 84.12 | a | |||
1998 | 60.97 | a | 59.38 | b | 70.66 | b | 75.23 | 85.90 | a | ----- | z | 107.00 | a | 106.07 | c | 93.81 | c | 80.50 | g | 67.79 | a | 60.07 | a | 78.69 | b | |
1999 | 63.57 | a | 66.56 | c | 75.41 | b | 74.11 | b | ----- | z | 98.32 | e | 101.23 | a | 103.21 | b | 96.43 | b | 87.81 | 74.13 | 62.39 | 82.11 | a | |||
2000 | ----- | z | 65.54 | c | 70.84 | 87.33 | c | 96.07 | a | 103.04 | g | 106.56 | d | 102.50 | g | 98.25 | b | 80.58 | 62.63 | c | 62.57 | a | 81.15 | c | ||
2001 | 58.53 | a | 61.96 | c | 69.33 | j | 79.43 | i | 98.50 | a | 104.19 | c | 105.68 | c | 107.50 | e | 101.60 | 87.23 | a | ----- | z | 56.35 | 86.84 | c | ||
2002 | 59.77 | 68.55 | f | 72.90 | 85.12 | e | 88.81 | e | 104.08 | d | 106.48 | b | 98.30 | d | 91.26 | c | 81.79 | b | 70.93 | c | 60.00 | 83.59 | a | |||
2003 | ----- | z | 64.61 | 73.24 | b | 78.78 | c | 93.96 | c | 104.55 | a | 110.86 | b | 105.71 | c | 100.00 | 90.52 | ----- | z | 59.20 | a | 88.14 | b | |||
2004 | 60.00 | b | 58.11 | a | ----- | z | 80.75 | n | 93.23 | i | 102.56 | n | 108.16 | f | 103.19 | d | 95.10 | a | 80.94 | 65.20 | e | 59.07 | c | 74.51 | e | |
2005 | 60.43 | c | 63.00 | g | 71.43 | c | 77.91 | h | 91.81 | e | 97.93 | b | 108.92 | g | 101.54 | g | 96.38 | f | 83.69 | e | 72.48 | g | 60.55 | k | 81.06 | g |
2006 | 63.48 | h | 68.79 | i | 65.78 | d | 80.21 | p | 93.56 | m | 104.05 | i | 107.50 | i | 102.20 | u | 99.21 | p | 84.20 | k | 77.56 | n | 68.90 | u | 65.78 | k |
2007 | 62.88 | o | 69.54 | o | 84.46 | r | 82.75 | r | 98.86 | x | 108.12 | v | ----- | z | ----- | z | ----- | z | 88.90 | 76.85 | d | 55.39 | h | 82.87 | j | |
2008 | 54.92 | g | 62.00 | c | 74.21 | b | 82.30 | g | 90.37 | d | 104.36 | h | 106.84 | 105.71 | 100.27 | 84.42 | g | 70.22 | u | 56.19 | 85.08 | e | ||||
2009 | 60.77 | 66.75 | l | 73.33 | a | 81.18 | b | 94.48 | j | 96.23 | 107.94 | 104.03 | b | 99.77 | 79.87 | a | 69.47 | o | 56.26 | l | 87.89 | d | ||||
2010 | 59.13 | 61.25 | 68.84 | 78.00 | 85.03 | 99.14 | b | 108.13 | 103.87 | 99.70 | 83.77 | 68.31 | a | 59.19 | 81.20 | |||||||||||
2011 | 58.00 | a | 61.79 | 70.45 | 78.17 | 85.74 | 99.30 | 104.31 | b | 107.48 | 99.64 | b | 82.90 | 65.57 | 57.87 | 80.94 | ||||||||||
2012 | 61.61 | 65.72 | 72.82 | c | 82.17 | 94.29 | 102.73 | 104.19 | 104.35 | 97.43 | 84.97 | a | 72.38 | a | 58.16 | 83.40 | ||||||||||
2013 | 56.48 | 61.96 | 75.77 | a | 83.29 | b | 91.63 | d | 104.88 | f | 106.25 | g | 102.76 | f | 97.50 | v | 79.45 | b | 68.96 | c | 53.31 | e | 71.36 | d | ||
2014 | 58.45 | ----- | z | 69.88 | w | 79.29 | b | 88.74 | h | 101.75 | j | 106.13 | 99.97 | b | 97.87 | 85.12 | e | 70.69 | q | 60.19 | 83.86 | e | ||||
2015 | 61.22 | d | ----- | z | ----- | z | ----- | z | 88.00 | q | 107.72 | e | 107.00 | p | ----- | z | ----- | z | 81.50 | u | 67.22 | g | 55.67 | g | 84.47 | j |
2016 | 55.90 | a | 69.50 | c | 76.75 | g | 80.67 | c | 91.03 | a | 109.17 | 111.71 | 104.55 | 96.62 | f | 86.77 | 73.83 | 57.61 | h | 87.01 | c | |||||
2017 | 55.35 | k | 65.32 | 77.97 | 82.17 | 92.16 | 115.70 | t | 111.55 | 107.45 | 107.75 | v | ----- | z | ----- | z | ----- | z | 89.44 | f | ||||||
2018 | ----- | z | 66.21 | n | 71.16 | 86.20 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.68 | j | ||
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 | 84.83 | g | 64.07 | c | 59.40 | f | 64.07 | k |
2023 | 54.76 | b | 60.15 | b | 63.00 | c | 80.00 | 91.94 | 96.20 | 111.66 | b | 102.13 | 94.28 | a | 84.86 | c | 70.32 | b | 64.37 | d | 81.14 | |||||
2024 | 59.21 | c | 62.61 | a | 70.48 | d | 80.45 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.10 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 59.69 | 64.28 | 72.29 | 81.07 | 91.32 | 101.71 | 106.72 | 103.96 | 96.81 | 84.33 | 69.23 | 60.17 | 81.67 | |||||||||||||
S.D. | 3.23 | 3.19 | 3.94 | 3.81 | 3.52 | 3.53 | 2.90 | 2.55 | 2.85 | 3.56 | 3.82 | 3.34 | 1.16 | |||||||||||||
SKEW | 0.43 | -0.12 | 0.01 | 0.59 | -0.10 | 0.30 | 0.18 | -0.52 | -0.33 | 0.30 | 0.31 | 0.32 | 1.12 | |||||||||||||
MAX | 67.58 | 69.50 | 79.83 | 90.66 | 98.50 | 109.17 | 111.71 | 107.50 | 101.60 | 92.25 | 76.85 | 68.07 | 83.40 | |||||||||||||
MIN | 53.61 | 58.11 | 63.00 | 74.11 | 85.03 | 96.20 | 101.23 | 98.30 | 91.26 | 77.73 | 62.63 | 53.31 | 80.94 | |||||||||||||
YRS | 26 | 24 | 29 | 23 | 25 | 21 | 26 | 26 | 24 | 24 | 19 | 23 | 4 |