YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.83 | 74.61 | ----- | z | 54.30 | a | 71.58 | i | ||
1987 | 58.71 | 61.36 | 67.68 | 75.50 | 82.32 | 89.76 | a | 94.39 | ----- | z | 84.83 | 82.16 | 68.03 | a | 59.16 | 74.90 | a | |||||||||
1988 | 55.13 | 65.90 | 74.23 | 80.03 | 87.42 | 92.70 | 93.76 | b | 92.61 | 90.00 | 83.31 | b | 65.79 | p | 59.77 | 79.53 | a | |||||||||
1989 | 64.81 | 64.25 | 78.94 | 89.33 | 97.84 | 101.57 | b | 100.65 | 97.87 | 91.23 | 86.07 | a | 71.04 | e | 58.45 | 83.50 | ||||||||||
1990 | 65.23 | 69.37 | a | 70.96 | d | 73.33 | f | 95.41 | d | 107.40 | 94.35 | 90.33 | a | 87.50 | f | 81.35 | 71.74 | g | 61.86 | i | 84.30 | d | ||||
1991 | 58.52 | 69.79 | 77.94 | 87.50 | h | 96.50 | c | 101.38 | a | 96.48 | j | 93.16 | 84.70 | c | 84.86 | c | 69.25 | b | 60.53 | a | 79.66 | b | ||||
1992 | 56.62 | j | 67.09 | f | 77.74 | 86.42 | f | 86.17 | a | 97.14 | a | 100.11 | d | 96.97 | a | 96.83 | f | 87.87 | 68.10 | a | 64.10 | 84.77 | d | |||
1993 | 62.77 | 65.50 | 74.29 | 86.29 | b | 92.10 | 98.25 | n | 100.95 | i | 95.58 | e | 94.62 | d | 83.48 | d | 69.32 | e | 65.40 | f | 80.44 | c | ||||
1994 | 61.80 | k | 66.43 | g | 72.31 | e | 81.61 | g | 88.41 | b | 105.31 | a | 103.77 | a | 102.41 | d | 94.96 | b | 78.54 | c | 72.12 | f | 62.92 | e | 88.58 | d |
1995 | 58.29 | j | 69.16 | i | 69.61 | c | 80.40 | e | 84.64 | f | 94.86 | b | 97.04 | c | 94.48 | b | 85.25 | b | 85.04 | d | 73.23 | q | 60.73 | a | 83.43 | d |
1996 | 62.55 | i | 65.35 | f | 73.62 | j | 84.71 | f | 100.55 | b | 100.00 | 100.47 | a | 93.61 | c | 88.41 | c | 82.36 | i | 72.54 | f | 67.12 | e | 91.69 | f | |
1997 | 57.23 | a | 59.62 | b | 78.79 | b | 77.27 | 89.32 | c | 97.00 | 98.80 | a | 97.55 | 94.65 | d | 80.42 | 67.21 | a | 56.22 | d | 79.51 | |||||
1998 | 64.73 | a | 63.08 | b | 68.77 | ----- | z | 93.39 | 100.83 | 99.87 | a | 92.93 | a | 93.36 | b | 81.03 | 69.17 | a | 60.63 | d | 80.71 | a | ||||
1999 | 66.32 | 72.43 | 73.42 | g | 80.43 | 87.14 | b | 91.57 | 95.93 | a | 97.35 | 89.28 | e | 81.65 | 76.48 | g | 60.15 | e | 82.23 | b | ||||||
2000 | 66.21 | g | 72.96 | f | ----- | z | 82.93 | 94.24 | b | 91.37 | 96.10 | 93.81 | 92.07 | 74.83 | a | 58.34 | a | ----- | z | 85.46 | d | |||||
2001 | 54.00 | 65.21 | d | 68.76 | f | 84.90 | a | 91.30 | d | 98.21 | b | 99.94 | ----- | z | 89.76 | a | 82.59 | d | 67.04 | e | 57.76 | b | 79.07 | b | ||
2002 | 62.48 | f | 60.18 | f | 72.00 | f | 84.11 | b | 90.77 | a | 98.03 | a | 94.19 | 96.48 | 90.07 | b | 73.77 | 62.57 | 57.10 | b | 83.01 | c | ||||
2003 | 62.61 | 63.36 | f | 72.50 | c | 82.87 | 90.15 | d | ----- | z | 95.79 | c | 95.74 | 88.28 | a | 81.23 | a | 68.57 | 62.77 | e | 80.05 | b | ||||
2004 | 59.19 | 58.71 | a | 73.44 | d | 75.00 | b | 90.48 | b | 94.23 | 94.23 | a | 92.00 | 85.57 | 76.04 | c | ----- | z | 59.44 | d | 78.03 | a | ||||
2005 | 61.52 | b | 60.54 | b | 70.39 | c | ----- | z | ----- | z | 94.87 | 95.71 | 90.94 | 92.36 | b | 77.14 | c | 72.38 | a | 61.50 | a | 77.73 | b | |||
2006 | ----- | z | 66.29 | 72.43 | a | ----- | z | ----- | z | 97.27 | 97.03 | ----- | z | 83.56 | c | 77.21 | c | 72.04 | b | 58.59 | d | 78.05 | d | |||
2007 | 50.55 | b | 65.29 | d | 75.26 | h | 77.73 | d | 81.31 | b | 92.47 | 90.94 | 94.48 | 89.07 | c | 83.74 | 69.38 | a | 61.03 | 77.82 | a | |||||
2008 | 58.80 | f | 70.29 | a | 75.33 | a | 83.32 | b | 90.94 | 101.07 | c | 94.07 | b | 92.93 | d | 84.54 | d | 81.07 | d | 69.32 | b | 63.32 | c | 82.38 | a | |
2009 | 65.15 | d | ----- | z | 77.12 | f | 81.26 | c | 88.87 | h | 96.73 | h | 96.69 | b | 96.10 | 86.56 | c | 76.45 | 70.48 | a | 52.27 | a | 78.12 | d | ||
2010 | 57.67 | a | 58.96 | c | 71.33 | g | 80.73 | d | 89.26 | d | 99.46 | b | 90.07 | a | 95.97 | a | 90.69 | a | 81.83 | a | 70.36 | b | 66.41 | d | 80.13 | a |
2011 | 60.53 | a | 63.70 | a | 81.46 | e | 88.62 | d | 91.43 | h | 103.27 | 101.10 | 102.03 | 91.24 | e | 83.29 | c | 68.27 | 51.93 | c | 81.40 | a | ||||
2012 | 63.35 | 62.59 | 83.60 | k | 88.59 | a | 89.55 | 100.12 | f | 96.95 | k | 99.00 | 89.43 | 80.13 | 73.66 | a | 62.35 | 78.74 | c | |||||||
2013 | 56.26 | 64.18 | 76.00 | 83.13 | 90.50 | a | 99.03 | a | 101.17 | a | 95.90 | 89.13 | 79.77 | 65.47 | 56.03 | 79.72 | ||||||||||
2014 | 60.29 | 67.36 | 74.32 | ----- | z | 88.74 | 100.80 | 96.10 | a | 96.48 | 83.03 | 82.30 | a | 64.77 | 59.57 | a | 79.43 | a | ||||||||
2015 | 53.94 | 63.04 | 71.32 | 80.79 | a | 89.23 | 93.30 | 98.13 | 98.13 | 92.30 | 77.93 | a | 67.70 | 60.63 | a | 78.87 | ||||||||||
2016 | 58.23 | 68.69 | 76.42 | 80.69 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.23 | 61.90 | 69.03 | f | |||||
2017 | 64.81 | 70.50 | 81.26 | 84.45 | a | 88.45 | 98.77 | 97.84 | 91.48 | 89.23 | 81.74 | 73.47 | 62.10 | 82.01 | ||||||||||||
2018 | 59.87 | 66.68 | 76.19 | 83.10 | 96.16 | 101.07 | 97.77 | 94.61 | 86.25 | n | ----- | z | ----- | z | ----- | z | 84.43 | d | ||||||||
2019 | 57.32 | 66.18 | 68.58 | 80.97 | 87.32 | 94.93 | 99.03 | 101.45 | 92.07 | 78.19 | 66.07 | 62.03 | a | 79.51 | ||||||||||||
2020 | 61.03 | 62.10 | 74.35 | 80.97 | 94.29 | 98.73 | 102.23 | 101.00 | 88.43 | 83.52 | 72.28 | a | 60.35 | 81.61 | ||||||||||||
2021 | 56.97 | 59.18 | 72.55 | 76.93 | 88.03 | ----- | z | 91.90 | 92.03 | 92.23 | 83.65 | 70.80 | 69.10 | 77.58 | a | |||||||||||
2022 | 59.52 | 61.39 | 72.16 | 85.13 | 94.77 | 97.90 | 100.32 | 93.32 | 91.20 | 76.87 | 63.87 | ----- | z | 81.50 | a | |||||||||||
2023 | 63.48 | 60.68 | 72.00 | 77.50 | b | 87.94 | 99.30 | 102.45 | 100.29 | 94.93 | 80.33 | a | 66.86 | a | 63.67 | a | 80.79 | |||||||||
2024 | 57.19 | 66.93 | 71.03 | a | 79.30 | 92.13 | 100.73 | 97.13 | ----- | z | 89.17 | a | 86.94 | 69.20 | ----- | z | 80.98 | b | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 59.90 | 64.66 | 73.90 | 81.80 | 90.69 | 97.95 | 97.32 | 95.73 | 89.49 | 80.86 | 68.44 | 60.42 | 80.69 | |||||||||||||
S.D. | 3.93 | 3.76 | 3.65 | 3.75 | 4.17 | 4.12 | 3.36 | 3.28 | 3.35 | 3.52 | 3.28 | 3.77 | 1.58 | |||||||||||||
SKEW | -0.26 | 0.18 | 0.38 | 0.21 | 0.12 | -0.01 | -0.18 | 0.43 | -0.20 | -0.18 | -0.94 | -0.17 | 0.58 | |||||||||||||
MAX | 66.32 | 72.43 | 81.46 | 89.33 | 100.55 | 107.40 | 103.77 | 102.41 | 94.96 | 87.87 | 73.66 | 69.10 | 83.50 | |||||||||||||
MIN | 50.55 | 58.71 | 67.68 | 75.00 | 81.31 | 89.76 | 90.07 | 90.33 | 83.03 | 73.77 | 58.34 | 51.93 | 78.87 | |||||||||||||
YRS | 30 | 30 | 29 | 29 | 32 | 32 | 34 | 33 | 35 | 36 | 30 | 33 | 8 |