YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1988 | 53.58 | r | 59.47 | j | 63.94 | d | 69.44 | e | 78.16 | f | 89.08 | d | 95.95 | 90.58 | a | 84.55 | b | 79.26 | d | 62.48 | d | 49.53 | m | 79.41 | d | |
1989 | 50.43 | c | 56.08 | b | 66.61 | d | 77.07 | c | 80.78 | b | 89.38 | b | 96.57 | b | 91.63 | a | 85.66 | e | 73.58 | e | 64.44 | c | 54.52 | d | 73.90 | |
1990 | 51.02 | e | 55.10 | g | 66.15 | e | 73.64 | a | 79.80 | f | 90.80 | b | 94.53 | 91.32 | a | 87.96 | e | 74.88 | a | 62.45 | b | 48.16 | f | 76.97 | c | |
1991 | 52.05 | c | 63.05 | f | 56.00 | d | 69.00 | f | 75.23 | c | 84.57 | c | 93.47 | b | 92.00 | e | 86.96 | b | 77.86 | b | 62.05 | b | 52.48 | b | 73.27 | b |
1992 | 52.69 | d | 59.44 | d | 61.92 | a | 73.75 | 82.22 | b | 86.98 | c | 93.25 | c | 93.75 | c | 87.74 | c | 75.96 | g | 59.33 | f | 49.50 | f | 76.86 | c | |
1993 | 51.52 | j | 56.10 | h | ----- | z | 72.35 | j | 81.34 | b | 87.00 | b | 91.38 | c | 91.38 | g | 85.74 | g | 75.15 | h | 57.65 | f | 53.44 | e | 78.29 | h |
1994 | 54.52 | c | 54.65 | e | 66.87 | a | 73.34 | a | 79.98 | c | 93.96 | c | 96.50 | a | 98.10 | b | 89.78 | c | 72.27 | e | 56.09 | b | 54.13 | e | 74.18 | |
1995 | 53.50 | e | 63.33 | g | 63.52 | c | 70.02 | g | 75.15 | d | 86.40 | d | 95.18 | 97.02 | 91.08 | l | 74.66 | f | 66.33 | c | 56.00 | b | 74.14 | d | ||
1996 | 54.50 | i | 61.85 | e | 65.73 | g | 74.77 | b | 82.78 | f | 91.14 | b | 99.07 | a | 96.54 | e | 86.04 | e | 74.58 | e | 63.48 | h | 53.77 | c | 79.72 | d |
1997 | 55.39 | c | 57.30 | e | 68.71 | c | 72.00 | e | 86.73 | e | ----- | z | 92.78 | d | 95.85 | d | 88.75 | b | 73.02 | g | 62.61 | b | 52.74 | d | 73.29 | b |
1998 | 53.47 | b | 54.31 | b | 62.57 | b | 64.90 | d | 75.06 | 84.21 | d | 96.93 | d | 96.62 | c | 86.25 | b | 72.95 | b | 60.80 | 54.47 | a | 71.88 | |||
1999 | 56.25 | a | 58.79 | b | 65.14 | c | 66.11 | b | 78.88 | a | 87.45 | 93.74 | 93.82 | c | 87.71 | a | 77.60 | a | 65.12 | a | 56.22 | d | 73.90 | |||
2000 | 55.50 | e | 59.65 | b | 63.21 | b | 75.10 | a | 85.60 | 92.50 | c | 95.88 | b | 94.53 | a | 87.05 | 73.97 | a | 56.70 | b | 56.40 | b | 74.67 | |||
2001 | 52.14 | b | 54.82 | c | 63.81 | b | 68.68 | b | 86.17 | a | 91.26 | a | 94.29 | 95.40 | b | ----- | z | 76.00 | b | 61.47 | n | 49.88 | e | 73.24 | b | |
2002 | 53.33 | a | 57.42 | d | 62.16 | 73.64 | b | 79.63 | a | 91.96 | r | 97.57 | a | 93.70 | d | 88.20 | 71.46 | d | 64.02 | c | 53.16 | b | 72.21 | a | ||
2003 | 59.41 | b | 57.09 | 63.26 | h | 68.84 | e | 81.94 | f | 90.43 | a | 98.34 | 95.00 | c | 89.39 | b | 81.36 | b | 57.54 | d | 52.18 | f | 77.49 | c | ||
2004 | 53.74 | b | 53.98 | d | 70.96 | f | 72.22 | e | 82.15 | g | 90.06 | c | 94.53 | a | 89.08 | y | 86.33 | 72.69 | e | 58.09 | c | 54.52 | e | 70.69 | c | |
2005 | 55.18 | a | 56.79 | b | 61.79 | 67.94 | c | 81.43 | b | 87.67 | a | 96.81 | b | 92.44 | d | 85.59 | c | 74.34 | b | 64.13 | 54.03 | a | 73.18 | |||
2006 | 54.66 | b | 59.40 | b | 59.16 | c | 69.88 | d | 83.60 | b | 93.43 | c | 98.24 | b | 94.79 | b | 86.07 | 74.52 | b | 63.17 | d | 53.45 | b | 74.20 | ||
2007 | 50.88 | c | 58.62 | 66.86 | c | 73.40 | 83.11 | c | 90.40 | a | 97.59 | d | 96.72 | d | 88.25 | 74.14 | b | 66.50 | c | 51.75 | c | 74.85 | ||||
2008 | 50.79 | b | 55.66 | a | 64.17 | a | 72.38 | 77.95 | a | 91.10 | 97.15 | a | 95.58 | 88.52 | 75.77 | a | 65.95 | 51.79 | 73.90 | |||||||
2009 | 58.19 | 55.88 | 63.06 | 70.60 | 86.82 | 86.59 | a | 97.73 | a | 92.95 | a | 89.92 | 71.62 | a | 63.43 | 51.57 | b | 74.03 | ||||||||
2010 | 54.69 | 57.57 | a | 60.68 | 67.37 | 75.48 | 89.05 | 98.65 | 93.62 | a | 87.34 | a | 75.58 | a | 61.47 | a | 56.17 | a | 73.14 | |||||||
2011 | 54.22 | a | 54.02 | 63.55 | a | 71.20 | 75.83 | a | 88.89 | b | 94.73 | a | 96.55 | b | 87.73 | 74.52 | 59.85 | 50.88 | c | 72.66 | ||||||
2012 | 55.26 | 58.33 | 63.35 | 72.63 | 83.85 | 90.80 | 93.72 | b | 96.78 | b | 89.81 | a | 75.40 | 63.27 | 53.00 | a | 74.68 | |||||||||
2013 | 51.48 | a | 55.20 | 67.02 | a | 73.27 | 81.52 | 92.37 | 96.19 | b | 92.27 | 84.93 | a | 70.30 | a | 62.25 | b | 52.63 | a | 73.29 | ||||||
2014 | 57.76 | 61.31 | a | 67.37 | 72.78 | a | 81.41 | b | 91.23 | b | 96.62 | b | 90.78 | a | 88.23 | 77.67 | d | 64.13 | d | 55.11 | d | 75.37 | ||||
2015 | 57.97 | b | 62.83 | a | 69.19 | 71.50 | 77.24 | b | 92.77 | 92.71 | 96.45 | b | 90.09 | a | 78.78 | d | 60.20 | 49.83 | e | 74.96 | ||||||
2016 | 52.47 | 62.33 | b | 67.55 | 72.10 | 78.89 | 95.12 | 96.15 | 94.10 | 85.03 | a | 78.05 | 65.00 | 54.27 | 75.09 | |||||||||||
2017 | 52.95 | 60.46 | 67.93 | a | 73.36 | b | 80.68 | 93.16 | a | 98.33 | b | 95.66 | 86.57 | 76.75 | a | 66.40 | a | 57.37 | 75.80 | |||||||
2018 | 57.77 | 57.25 | 63.76 | 76.40 | 81.63 | 91.48 | 97.31 | 96.85 | 90.09 | c | 74.32 | 62.66 | a | 55.08 | 75.38 | |||||||||||
2019 | 54.06 | 51.11 | 63.50 | a | 74.64 | a | 76.61 | d | 89.59 | a | 96.00 | 95.94 | 87.70 | b | 71.55 | a | 63.52 | b | 52.62 | a | 73.07 | |||||
2020 | 53.89 | d | 57.17 | b | 61.54 | e | 72.16 | e | 83.52 | d | 89.22 | c | 96.43 | a | 98.18 | 89.84 | a | 78.64 | c | 62.78 | a | 54.24 | 74.80 | |||
2021 | 54.48 | 58.19 | a | 61.35 | a | 74.65 | 82.85 | a | 95.43 | 98.55 | a | 96.23 | a | 89.53 | a | 71.72 | a | 66.87 | d | 54.22 | a | 75.34 | ||||
2022 | 55.28 | a | 57.65 | d | 66.13 | a | 73.90 | 82.38 | c | 93.20 | b | 97.25 | a | 95.76 | b | 90.78 | 77.69 | 58.10 | 52.62 | b | 75.06 | |||||
2023 | 52.21 | 54.63 | b | 58.39 | c | 71.66 | b | 82.00 | 85.84 | b | 99.95 | 94.74 | b | 86.48 | 77.71 | 63.70 | b | 57.12 | a | 73.70 | ||||||
2024 | 52.94 | 58.14 | 61.95 | a | 71.00 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.67 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.13 | 57.43 | 63.91 | 71.98 | 80.76 | 90.07 | 96.11 | 94.77 | 87.72 | 75.24 | 62.57 | 53.73 | 74.21 | |||||||||||||
S.D. | 2.28 | 2.69 | 3.04 | 2.82 | 3.47 | 2.87 | 2.04 | 2.08 | 1.72 | 2.70 | 2.90 | 1.91 | 0.99 | |||||||||||||
SKEW | 0.46 | 0.05 | -0.37 | -0.67 | -0.11 | -0.18 | -0.37 | -0.43 | -0.04 | 0.17 | -0.64 | -0.09 | -0.47 | |||||||||||||
MAX | 59.41 | 62.83 | 69.19 | 77.07 | 86.82 | 95.43 | 99.95 | 98.18 | 90.78 | 81.36 | 66.87 | 57.37 | 75.80 | |||||||||||||
MIN | 50.43 | 51.11 | 56.00 | 64.90 | 75.06 | 84.21 | 91.38 | 90.58 | 84.55 | 70.30 | 56.09 | 49.83 | 71.88 | |||||||||||||
YRS | 34 | 32 | 33 | 33 | 31 | 34 | 36 | 34 | 33 | 32 | 32 | 32 | 24 |