YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 98.35 | d | 102.50 | a | 96.13 | 89.63 | 82.13 | 71.25 | j | 59.24 | j | 93.75 | g | |||
1967 | 62.83 | a | 70.32 | f | 78.90 | a | 80.30 | 88.52 | 95.93 | 99.13 | 95.83 | b | 92.11 | l | 86.50 | m | 72.65 | g | 54.25 | o | 85.92 | e | ||||
1968 | 62.31 | e | 69.88 | d | 69.86 | c | 77.58 | f | 88.60 | f | 100.48 | g | 96.29 | j | 91.57 | h | 91.72 | e | 89.08 | e | 70.07 | 60.68 | 73.37 | e | ||
1969 | 64.13 | a | 64.00 | c | 68.85 | d | 82.48 | g | 90.80 | a | 96.93 | c | 84.13 | h | 99.31 | e | 92.85 | c | 79.26 | 68.89 | b | 62.43 | c | 78.75 | b | |
1970 | 60.11 | d | 68.91 | e | 68.61 | 76.31 | a | 91.32 | c | 98.67 | c | 100.59 | b | 98.06 | 89.40 | 76.93 | b | 71.63 | 63.04 | e | 80.30 | |||||
1971 | 64.50 | a | 65.82 | 75.19 | 79.43 | 87.90 | a | 100.00 | i | 101.86 | c | 94.84 | 93.30 | 76.85 | d | 70.17 | f | 56.89 | c | 79.66 | b | |||||
1972 | 62.75 | c | 71.33 | e | 80.54 | g | 82.06 | m | 89.71 | g | 96.67 | c | 101.45 | b | 96.85 | e | 91.35 | g | 76.93 | c | 64.65 | d | 57.93 | d | 78.57 | d |
1973 | 55.73 | e | 61.29 | d | 63.38 | b | 75.04 | c | 88.33 | g | 96.59 | a | 97.31 | b | 97.85 | d | 94.41 | h | 86.12 | f | ----- | z | 61.57 | j | 78.17 | e |
1974 | 61.26 | 65.29 | d | 75.92 | g | 81.88 | m | 95.20 | u | 102.86 | h | 96.68 | f | 95.70 | k | 91.19 | n | 78.36 | f | 68.00 | h | 57.30 | d | 61.28 | i | |
1975 | 59.23 | e | 65.06 | l | 69.16 | 73.97 | a | 86.21 | c | 97.22 | c | 97.23 | 98.36 | c | 90.67 | 83.65 | 71.47 | 61.10 | a | 80.75 | a | |||||
1976 | 61.00 | 68.59 | 72.32 | 80.18 | b | 89.39 | 99.20 | 97.65 | 97.45 | 89.53 | 76.80 | a | 68.47 | 60.13 | 80.06 | |||||||||||
1977 | 58.19 | 69.46 | 70.23 | 82.53 | 88.16 | 101.10 | 99.68 | 101.19 | 93.17 | 83.26 | 72.67 | 64.77 | 82.03 | |||||||||||||
1978 | 59.94 | 63.50 | 71.94 | 80.70 | 89.35 | 102.71 | b | 101.87 | 96.42 | 90.27 | 83.97 | 67.43 | 56.90 | 80.42 | ||||||||||||
1979 | 54.77 | 63.63 | a | 69.35 | 81.90 | 86.13 | 96.70 | 99.29 | 94.55 | 94.00 | 86.03 | 67.60 | 64.77 | 79.89 | ||||||||||||
1980 | 60.23 | 65.69 | 68.70 | a | 79.90 | ----- | z | 100.77 | 101.42 | 96.13 | a | 93.43 | 80.94 | 69.45 | a | 66.32 | 80.27 | a | ||||||||
1981 | 62.17 | a | 69.96 | 69.90 | 84.30 | 88.68 | 99.20 | 98.90 | a | 96.55 | 92.80 | 80.42 | 73.10 | 64.94 | 81.74 | |||||||||||
1982 | 59.48 | b | 65.61 | 70.42 | 81.14 | a | 87.17 | b | 96.80 | 99.03 | 95.93 | c | 91.60 | 81.06 | 65.07 | b | 57.23 | 79.21 | ||||||||
1983 | 59.83 | a | 63.73 | b | 69.73 | a | 73.57 | 89.35 | 96.97 | a | 100.29 | 97.87 | 93.50 | 78.55 | 66.70 | 59.77 | 79.16 | |||||||||
1984 | 60.32 | 65.76 | 75.20 | a | 79.61 | b | 94.39 | 96.70 | 98.06 | 94.81 | 90.60 | 76.17 | a | 68.73 | 58.27 | a | 79.88 | |||||||||
1985 | 55.17 | a | 62.74 | a | 70.33 | a | 82.10 | 89.06 | 99.03 | 98.87 | 96.33 | a | 88.23 | 78.61 | 67.27 | 61.39 | 79.10 | |||||||||
1986 | 67.42 | 66.21 | 74.45 | 82.20 | 89.29 | 96.67 | 95.03 | b | 96.35 | 90.24 | a | 79.62 | b | 66.03 | a | 57.23 | 80.06 | |||||||||
1987 | 59.65 | 63.43 | 68.43 | a | 82.17 | 86.16 | 96.80 | 98.13 | 94.97 | 90.36 | b | 85.45 | 67.93 | a | 56.13 | a | 79.13 | |||||||||
1988 | 58.80 | a | 67.24 | 73.84 | 79.21 | a | 88.65 | 98.50 | 98.55 | 94.10 | 91.72 | a | 85.97 | 71.53 | 59.17 | a | 80.61 | |||||||||
1989 | 59.90 | a | 67.82 | 79.87 | 89.30 | 92.35 | 99.50 | 100.43 | a | 96.23 | a | 94.57 | 81.57 | a | 72.10 | 60.45 | 82.84 | |||||||||
1990 | 59.74 | 62.71 | 72.61 | 83.48 | a | 87.48 | 101.86 | a | 94.52 | 92.52 | 90.50 | 83.26 | 69.30 | 55.57 | a | 79.46 | ||||||||||
1991 | 57.48 | 67.70 | a | 66.10 | 78.60 | 87.55 | 93.73 | 96.16 | ----- | z | ----- | z | 66.00 | x | 66.20 | 56.90 | 74.49 | c | ||||||||
1992 | 54.10 | 64.34 | 68.58 | 83.20 | 83.74 | 95.20 | 94.57 | a | 92.39 | 91.97 | 84.26 | 64.90 | 55.87 | a | 77.76 | |||||||||||
1993 | 58.00 | 59.93 | 71.52 | 80.30 | 87.87 | 96.07 | 96.13 | 93.26 | 91.27 | 78.48 | 65.53 | 59.03 | 78.12 | |||||||||||||
1994 | 63.00 | 63.93 | 73.87 | 80.03 | 87.16 | 99.97 | 99.97 | 97.97 | b | 91.03 | 80.03 | a | 63.33 | 58.90 | 79.93 | |||||||||||
1995 | ----- | z | 68.52 | a | 70.65 | 77.70 | 83.84 | 94.47 | 100.06 | 97.68 | 91.00 | 84.68 | ----- | z | 57.91 | t | 85.40 | c | ||||||||
1996 | 65.00 | 70.00 | a | 73.94 | 85.15 | c | 93.70 | a | 99.19 | c | 98.25 | c | 94.53 | p | 87.44 | c | 81.62 | b | 70.86 | b | 62.27 | a | 80.67 | a | ||
1997 | 59.11 | c | 65.78 | a | 78.33 | d | 78.50 | h | 91.41 | b | 96.19 | d | 96.54 | g | 96.23 | 95.81 | c | 82.84 | f | 69.90 | 54.86 | c | 78.62 | c | ||
1998 | 61.52 | 59.37 | a | 70.00 | a | 76.59 | a | 87.74 | 96.83 | a | 97.67 | a | 96.61 | 96.10 | a | 85.57 | c | 72.07 | 62.48 | 80.21 | ||||||
1999 | 66.52 | d | 71.89 | a | 79.41 | b | 81.48 | e | 89.53 | a | 96.73 | d | 93.67 | d | 95.13 | a | 91.14 | a | 86.03 | a | 76.38 | a | 59.50 | a | 82.28 | |
2000 | 64.59 | b | 70.35 | c | 76.14 | c | 86.81 | d | 95.47 | a | 97.36 | b | 100.80 | a | 97.00 | c | 95.57 | b | 77.79 | c | 60.93 | a | 61.11 | d | 81.99 | |
2001 | 60.28 | f | 65.38 | b | 74.29 | c | 82.48 | c | 93.77 | a | 99.82 | b | 97.31 | e | 97.31 | b | 95.87 | g | 85.54 | c | 72.30 | 59.07 | b | 82.73 | b | |
2002 | 61.61 | 66.75 | 72.97 | 85.81 | c | 90.84 | 102.10 | 98.42 | 97.34 | b | 93.55 | a | 77.96 | c | 70.37 | 57.33 | a | 81.26 | ||||||||
2003 | 66.90 | 63.15 | b | 69.58 | 80.23 | 89.97 | b | 98.60 | 103.69 | b | 98.28 | b | 94.00 | 86.97 | 67.97 | a | 60.68 | 81.67 | ||||||||
2004 | 60.50 | c | 61.59 | 75.40 | a | 77.68 | e | 91.04 | c | 98.07 | b | 97.96 | c | 94.67 | a | 89.74 | c | 80.14 | b | 63.71 | b | 58.83 | b | 79.11 | ||
2005 | 60.88 | e | 61.85 | a | 69.80 | f | 80.21 | b | 90.97 | b | 98.24 | a | 103.32 | c | 96.40 | a | 95.10 | a | 83.00 | a | 73.83 | a | 64.03 | 82.53 | a | |
2006 | 65.03 | a | 71.64 | f | 71.19 | 82.93 | a | 93.77 | 101.34 | a | 100.03 | a | 90.34 | b | 86.86 | a | 78.76 | b | 73.63 | 59.48 | b | 82.13 | a | |||
2007 | 56.08 | f | 63.72 | c | 76.85 | e | 80.72 | a | 90.60 | a | 98.11 | b | 98.23 | a | 94.84 | 92.57 | b | 83.62 | b | 73.41 | a | 57.19 | 82.72 | a | ||
2008 | 58.13 | 64.00 | b | 72.22 | d | 81.59 | a | 87.15 | e | 99.59 | c | 94.18 | c | 94.59 | b | 91.74 | c | 84.10 | a | 72.82 | b | 59.68 | 79.98 | |||
2009 | 63.14 | b | 69.18 | 77.89 | c | 80.40 | 91.52 | 94.07 | c | 102.00 | c | 100.07 | c | 93.68 | b | 81.17 | a | 73.93 | 57.54 | c | 82.05 | |||||
2010 | 58.10 | a | 61.77 | b | 69.96 | f | 79.57 | g | 86.79 | b | 98.23 | h | 98.72 | b | 95.86 | c | 95.45 | h | 85.21 | c | 70.83 | a | 64.87 | a | 77.77 | d |
2011 | 60.44 | d | 62.35 | b | 78.32 | f | 84.23 | d | 85.08 | e | 102.23 | h | 100.83 | g | 100.24 | f | 93.52 | g | 84.38 | e | 67.12 | d | 54.41 | d | 71.14 | e |
2012 | 62.59 | b | 66.10 | 74.10 | k | 85.18 | b | 93.63 | a | 103.70 | g | 98.27 | e | 99.47 | a | 92.96 | d | 86.00 | f | 76.61 | l | 68.50 | s | 85.46 | e | |
2013 | 57.76 | f | 61.85 | a | 73.38 | w | ----- | z | ----- | z | ----- | z | ----- | z | 98.33 | s | 93.89 | c | 83.38 | g | 69.17 | g | 59.86 | c | 71.87 | i |
2014 | 66.10 | a | 71.59 | a | 76.42 | 83.40 | 91.26 | 103.60 | 101.13 | 94.71 | 91.97 | a | 85.00 | b | 69.97 | 61.39 | 83.04 | |||||||||
2015 | 60.68 | 71.11 | a | 74.08 | r | 82.66 | a | 86.69 | b | 102.53 | 98.13 | a | 100.67 | a | 91.66 | a | 82.90 | a | 68.57 | 57.94 | 82.14 | a | ||||
2016 | 58.32 | 72.10 | 79.13 | 80.87 | 88.55 | b | 103.27 | 102.39 | 96.40 | a | 90.70 | 88.26 | 71.53 | 62.53 | a | 82.84 | ||||||||||
2017 | 58.77 | 68.25 | 80.03 | ----- | z | 91.00 | e | 103.33 | 100.52 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.28 | g | ||||
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.68 | 59.68 | k | |
2019 | 58.39 | ----- | z | 73.96 | c | 82.30 | 84.03 | 99.80 | 104.00 | 102.17 | a | 93.93 | 85.52 | 70.30 | 58.71 | 83.01 | a | |||||||||
2020 | 60.71 | 64.62 | 71.45 | 83.37 | 95.53 | a | 101.13 | 102.42 | 105.19 | 96.20 | 88.74 | 74.86 | a | 60.65 | 83.74 | |||||||||||
2021 | 61.26 | 67.89 | a | 72.20 | k | 84.90 | a | 92.94 | 102.60 | 97.26 | 97.17 | b | 93.96 | b | 81.97 | 75.40 | 63.71 | 83.55 | a | |||||||
2022 | 61.00 | 65.86 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.00 | k | |
2023 | ----- | z | ----- | z | ----- | z | 86.48 | e | 88.25 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.48 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.81 | 65.95 | 72.69 | 81.33 | 89.45 | 98.64 | 99.09 | 96.67 | 92.09 | 82.30 | 69.58 | 59.82 | 80.62 | |||||||||||||
S.D. | 3.02 | 3.35 | 3.90 | 3.25 | 2.97 | 2.55 | 2.53 | 2.57 | 2.20 | 3.47 | 3.47 | 2.87 | 1.54 | |||||||||||||
SKEW | 0.13 | 0.13 | 0.17 | -0.23 | 0.14 | 0.25 | -0.14 | 0.65 | -0.16 | -0.03 | -0.27 | 0.33 | 0.24 | |||||||||||||
MAX | 67.42 | 72.10 | 80.03 | 89.30 | 95.53 | 103.60 | 104.00 | 105.19 | 96.20 | 89.08 | 76.38 | 66.32 | 83.74 | |||||||||||||
MIN | 54.10 | 59.37 | 63.38 | 73.57 | 83.74 | 93.73 | 93.67 | 90.34 | 86.86 | 76.17 | 60.93 | 54.41 | 77.76 | |||||||||||||
YRS | 51 | 50 | 45 | 47 | 48 | 48 | 48 | 48 | 46 | 47 | 46 | 50 | 29 |