YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | 48.12 | c | 64.13 | 70.93 | 77.63 | a | 94.00 | b | 100.00 | ----- | z | 86.13 | 76.74 | 56.70 | 34.47 | p | 74.93 | c | ||||||
1979 | 33.96 | e | 40.35 | b | 57.56 | d | 69.74 | c | 80.14 | b | 92.15 | d | 98.86 | i | 93.74 | h | 89.41 | h | 77.91 | h | 49.82 | h | 47.59 | n | 62.32 | f |
1980 | 48.16 | f | 55.52 | h | 57.06 | n | 72.21 | k | 76.74 | h | 93.12 | f | 99.41 | b | 95.41 | d | 87.00 | e | 70.88 | e | 62.64 | p | 54.64 | t | 88.18 | h |
1981 | 54.26 | 54.20 | m | 57.76 | j | 73.96 | e | 78.79 | b | 95.75 | b | 98.07 | b | 95.68 | f | 90.83 | x | 65.55 | k | 62.96 | d | 49.62 | j | 77.30 | f | |
1982 | 45.05 | j | 47.39 | 58.93 | d | 68.63 | 79.80 | a | 90.14 | a | 96.43 | c | 93.00 | 85.80 | 69.23 | 50.96 | g | 45.65 | 73.50 | b | ||||||
1983 | 45.32 | 54.38 | d | 58.48 | 63.50 | 78.38 | r | 90.58 | k | 98.00 | e | 96.52 | d | 90.33 | 73.40 | f | 58.93 | 47.18 | t | 70.68 | d | |||||
1984 | 42.08 | s | 50.19 | b | 59.17 | a | 66.07 | 86.97 | a | 89.47 | 98.32 | 94.68 | 89.07 | 66.19 | 58.33 | 44.19 | 72.97 | a | ||||||||
1985 | 45.39 | 46.41 | a | 58.16 | 72.33 | 82.06 | 95.17 | 98.87 | 97.48 | 82.23 | 71.35 | 57.87 | 48.82 | n | 73.39 | a | ||||||||||
1986 | 52.44 | d | 56.57 | 67.84 | 69.43 | 80.52 | 95.33 | 95.06 | 96.81 | 80.30 | 68.68 | 57.53 | 45.34 | b | 72.16 | |||||||||||
1987 | 41.45 | 51.23 | b | 56.94 | 74.43 | 80.37 | d | 94.57 | 95.00 | 93.94 | 88.31 | a | 78.69 | e | 56.10 | 45.77 | e | 71.40 | ||||||||
1988 | 38.70 | a | 52.63 | b | 60.93 | a | 69.73 | 81.03 | 94.77 | 100.81 | 95.61 | 85.17 | 81.65 | 60.00 | b | 48.45 | b | 72.46 | ||||||||
1989 | 40.97 | 48.18 | 67.50 | a | 78.53 | 85.10 | b | 93.17 | a | 101.03 | 93.58 | 89.07 | a | 80.35 | n | 62.68 | k | ----- | z | 77.46 | c | |||||
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 97.52 | 94.76 | b | 87.93 | ----- | z | 56.96 | g | 41.97 | 80.54 | h | |||
1991 | 40.35 | n | 57.04 | c | 58.77 | 67.57 | 79.13 | a | 90.80 | 102.93 | d | 98.61 | 90.41 | h | 76.62 | b | 53.83 | 43.73 | i | 76.15 | c | |||||
1992 | 36.64 | i | 52.93 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.93 | k |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | 65.55 | b | 65.83 | a | 84.34 | b | 92.70 | 96.84 | 93.60 | a | 85.61 | b | 71.08 | e | 57.97 | 46.09 | h | 79.28 | c | |||
1998 | 50.93 | b | 51.25 | 61.21 | c | 67.17 | 79.76 | b | 88.17 | a | 99.90 | a | 98.03 | 86.71 | b | 70.13 | 56.32 | e | 45.19 | e | 71.23 | |||||
1999 | 52.48 | b | 56.04 | 68.34 | b | 64.74 | c | 79.13 | a | 90.66 | a | 97.03 | ----- | z | 85.39 | b | 77.53 | a | 64.00 | b | 49.29 | c | 71.33 | a | ||
2000 | 51.90 | a | 55.81 | b | 60.23 | 77.38 | a | 87.27 | a | 95.55 | a | 101.17 | a | 100.16 | 89.41 | a | 63.58 | s | 50.47 | 50.47 | a | 74.53 | a | |||
2001 | 45.77 | 51.82 | 62.55 | 70.97 | a | 84.77 | a | 94.10 | a | 97.48 | 96.03 | 91.79 | a | 77.39 | c | 62.60 | 46.41 | b | 73.47 | |||||||
2002 | 47.13 | a | 52.64 | 60.39 | 76.93 | 83.00 | a | 97.90 | 102.23 | 97.20 | a | 85.97 | 71.52 | 57.30 | 48.68 | 73.41 | ||||||||||
2003 | 53.61 | 53.07 | 61.86 | b | 70.96 | b | 83.47 | a | 94.93 | 104.42 | 98.00 | b | 89.00 | b | 80.06 | n | 56.15 | c | 49.29 | n | 76.55 | b | ||||
2004 | 45.90 | k | 47.78 | b | 70.44 | f | 70.90 | 83.13 | 94.52 | a | 98.72 | b | 95.29 | 86.87 | 70.68 | 54.83 | a | 47.35 | e | 75.01 | b | |||||
2005 | 51.55 | 53.25 | 62.03 | a | 71.15 | c | 82.94 | 90.00 | 102.74 | 92.84 | 87.52 | a | 74.29 | 60.91 | g | 48.77 | a | 74.28 | a | |||||||
2006 | 49.96 | d | 55.50 | 59.03 | a | 73.67 | 87.06 | 97.50 | 100.81 | 95.32 | 83.24 | a | 68.65 | 62.95 | j | 43.56 | v | 77.07 | b | |||||||
2007 | ----- | z | ----- | z | ----- | z | 73.89 | l | 86.48 | j | 96.15 | j | 102.55 | i | 98.45 | b | 88.36 | h | ----- | z | ----- | z | 44.20 | f | 98.45 | k |
2008 | 45.84 | l | 52.89 | j | 64.24 | j | 73.60 | o | 81.50 | c | 94.36 | b | 100.66 | b | 97.81 | 89.62 | a | 76.55 | i | 63.10 | i | 47.57 | j | 92.79 | g | |
2009 | 51.13 | h | 54.86 | 64.80 | f | 72.64 | e | 86.59 | d | 89.38 | f | 101.12 | e | 97.16 | 88.57 | b | 71.65 | n | 63.25 | j | 42.47 | l | 83.49 | f | ||
2010 | 42.22 | h | 46.57 | g | 60.80 | f | 72.90 | j | 77.52 | j | 93.14 | h | 100.14 | j | 93.11 | d | 90.40 | j | 70.33 | m | 60.20 | o | 55.17 | s | 93.11 | k |
2011 | 44.68 | 52.13 | e | 63.11 | l | 75.50 | d | 80.44 | d | 92.74 | c | 98.73 | e | 99.07 | c | 87.36 | b | 74.59 | d | 59.79 | p | 45.12 | w | 78.36 | c | |
2012 | 51.88 | w | ----- | z | ----- | z | ----- | z | 86.80 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.08 | r | ----- | z |
2013 | 42.00 | y | ----- | z | ----- | z | 65.38 | v | 85.64 | t | 98.46 | q | 100.31 | e | 94.17 | b | ----- | z | ----- | z | ----- | z | ----- | z | 97.24 | j |
2014 | 49.61 | c | 59.00 | b | 64.63 | a | 70.93 | a | 78.93 | b | 93.27 | 99.16 | 92.65 | 88.97 | 76.06 | 58.07 | b | 49.74 | 73.42 | |||||||
2015 | 43.35 | ----- | z | 67.52 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.83 | 42.94 | 52.66 | h | ||||
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 98.73 | 98.73 | e | 93.90 | a | 85.41 | a | 76.00 | 70.00 | s | 47.77 | a | 83.42 | f | ||
2017 | 46.43 | c | 57.50 | 68.83 | a | 69.83 | 80.48 | 97.20 | 99.40 | a | 95.70 | a | 86.97 | a | 73.77 | a | 64.83 | 50.73 | a | 74.31 | ||||||
2018 | 51.71 | 54.50 | 62.90 | 74.47 | 83.58 | 96.87 | 101.03 | 97.55 | 91.57 | 65.78 | d | 56.28 | a | 45.19 | 73.45 | |||||||||||
2019 | 44.48 | 46.21 | 59.71 | 73.30 | 73.32 | 90.77 | 98.42 | 98.13 | 89.07 | 69.29 | 59.17 | 44.84 | 70.56 | |||||||||||||
2020 | 41.26 | 52.76 | 61.65 | 71.23 | 84.63 | a | 89.70 | 99.52 | 102.06 | 89.50 | 79.00 | 61.10 | 46.67 | a | 73.26 | |||||||||||
2021 | 46.61 | 54.39 | 60.23 | 73.77 | 82.74 | 97.37 | 100.13 | 96.35 | 89.13 | 69.23 | 61.47 | 50.29 | 73.48 | |||||||||||||
2022 | 50.19 | 52.75 | 63.55 | 71.59 | a | 81.94 | 94.96 | f | 100.41 | b | 95.97 | 92.50 | 74.39 | 54.50 | 47.06 | 71.35 | a | |||||||||
2023 | 46.52 | 46.71 | 53.90 | 69.16 | e | 84.26 | 89.53 | 103.35 | 96.29 | 88.17 | 76.83 | a | 60.50 | 50.58 | 72.15 | |||||||||||
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.95 | 52.04 | 61.81 | 71.16 | 82.03 | 93.61 | 99.55 | 96.15 | 87.57 | 73.19 | 58.26 | 47.10 | 72.67 | |||||||||||||
S.D. | 5.04 | 4.09 | 3.78 | 3.59 | 3.09 | 2.88 | 2.17 | 2.22 | 2.63 | 4.18 | 3.31 | 2.51 | 1.11 | |||||||||||||
SKEW | -0.61 | -0.74 | 0.29 | -0.06 | -0.35 | -0.12 | 0.01 | 0.40 | -0.61 | 0.06 | 0.04 | -0.20 | -0.50 | |||||||||||||
MAX | 54.26 | 59.00 | 68.83 | 78.53 | 87.27 | 98.73 | 104.42 | 102.06 | 92.50 | 81.65 | 64.83 | 50.73 | 74.31 | |||||||||||||
MIN | 33.96 | 40.35 | 53.90 | 63.50 | 73.32 | 88.17 | 95.00 | 92.65 | 80.30 | 65.78 | 50.47 | 41.97 | 70.56 | |||||||||||||
YRS | 26 | 31 | 29 | 32 | 32 | 31 | 36 | 35 | 33 | 27 | 26 | 23 | 13 |