YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 94.14 | b | 98.47 | a | 97.87 | 92.00 | 89.94 | ----- | z | 63.48 | 89.32 | f | ||||
1966 | 60.61 | 60.25 | 75.32 | ----- | z | 95.00 | s | 97.70 | 99.26 | 94.39 | 89.63 | 83.90 | 76.40 | 65.39 | 80.29 | b | ||||||||||
1967 | 67.77 | 71.68 | 78.81 | 79.40 | 87.97 | 95.30 | 96.87 | 96.03 | 92.07 | 85.35 | 75.80 | 60.00 | 82.25 | |||||||||||||
1968 | 63.39 | 69.97 | 70.68 | 77.07 | 88.48 | 98.57 | 96.52 | 93.19 | 94.07 | 87.77 | 71.23 | 65.06 | 81.33 | |||||||||||||
1969 | 68.03 | 65.89 | 70.45 | 82.33 | 92.00 | 97.37 | 98.84 | 99.68 | 95.23 | 82.68 | 70.47 | 66.35 | 82.44 | |||||||||||||
1970 | 64.55 | 71.57 | 69.23 | 77.03 | 91.84 | 99.63 | 100.81 | 98.55 | 90.27 | 81.03 | 76.67 | 67.87 | 82.42 | |||||||||||||
1971 | 67.32 | 67.93 | 77.90 | 81.50 | 86.61 | 98.07 | 101.81 | 92.90 | 92.90 | 78.23 | 72.10 | 59.65 | 81.41 | |||||||||||||
1972 | 66.61 | 72.41 | 83.03 | 84.77 | 88.36 | c | 94.73 | 98.65 | 94.29 | 90.53 | 78.52 | 65.59 | a | 61.61 | 81.59 | |||||||||||
1973 | 59.10 | 63.61 | 63.77 | 74.80 | 88.10 | 95.41 | a | 96.17 | a | 96.90 | 93.03 | 86.16 | 73.73 | 66.58 | 79.78 | |||||||||||
1974 | 64.13 | 67.89 | 74.52 | 81.63 | 90.71 | 101.37 | 94.58 | 93.65 | 88.77 | 80.26 | 70.80 | 60.55 | 80.74 | |||||||||||||
1975 | 65.00 | ----- | z | 70.13 | 75.13 | 85.58 | 96.23 | 95.55 | 97.61 | 89.67 | 84.87 | 73.57 | 65.16 | 81.68 | a | |||||||||||
1976 | 64.74 | 70.14 | 72.35 | 79.60 | 88.39 | 98.00 | 94.16 | 96.13 | 88.90 | 78.19 | 70.93 | 63.81 | 80.45 | |||||||||||||
1977 | 60.65 | 70.75 | 70.60 | a | 82.97 | 85.87 | 98.67 | 98.16 | 97.06 | 92.64 | s | 85.50 | e | 77.03 | 68.50 | a | 81.43 | a | ||||||||
1978 | ----- | z | ----- | z | 73.13 | 80.13 | 88.10 | 100.33 | 102.16 | 98.13 | 93.80 | 86.84 | 69.70 | 59.68 | 85.20 | b | ||||||||||
1979 | 57.13 | 67.11 | 70.39 | 82.27 | 87.52 | 98.80 | 101.35 | 96.77 | 96.77 | 89.32 | 70.50 | 68.32 | 82.19 | |||||||||||||
1980 | 64.52 | 69.76 | 70.13 | 82.27 | 87.61 | 103.50 | 100.87 | a | 96.00 | 94.53 | 82.71 | 73.70 | 72.00 | 83.13 | ||||||||||||
1981 | 66.32 | 71.71 | 70.48 | 85.50 | 88.42 | 101.73 | 97.61 | 98.23 | 94.83 | 82.16 | 77.83 | 70.48 | 83.78 | |||||||||||||
1982 | 64.52 | 68.18 | 72.19 | 82.47 | 88.03 | 98.73 | 99.74 | 97.55 | 93.33 | 86.27 | a | 69.07 | 60.80 | a | 81.74 | |||||||||||
1983 | 64.39 | 65.43 | 67.87 | 73.93 | 89.39 | 97.30 | 100.84 | 97.03 | 93.10 | 80.45 | 68.93 | a | 64.58 | 80.27 | ||||||||||||
1984 | 63.19 | 68.07 | 75.71 | 79.38 | a | 95.45 | 97.77 | 97.87 | 94.61 | 93.33 | 77.35 | 72.00 | 62.97 | 81.48 | ||||||||||||
1985 | 60.10 | 65.82 | 73.94 | 84.23 | 91.29 | 102.28 | a | 101.48 | 96.74 | 90.00 | 80.65 | 70.76 | a | 67.06 | 82.03 | |||||||||||
1986 | 72.32 | 69.29 | 76.90 | a | 83.38 | a | 92.10 | a | 100.21 | a | 96.58 | 96.32 | c | 91.07 | 81.84 | 69.86 | a | 63.03 | 82.74 | |||||||
1987 | 65.20 | a | 65.19 | a | 70.29 | 83.80 | 88.68 | 101.13 | 101.45 | 94.90 | 91.20 | 88.06 | 72.10 | 62.77 | a | 82.06 | ||||||||||
1988 | 64.84 | 71.48 | 75.23 | a | 82.17 | a | 92.23 | 100.77 | 99.87 | 95.10 | 93.57 | 87.74 | 74.17 | 64.19 | 83.45 | |||||||||||
1989 | 63.77 | 72.82 | 81.20 | a | 90.79 | a | 94.20 | a | 102.24 | a | 102.68 | 97.10 | 97.17 | 83.32 | 75.47 | 66.06 | 85.57 | |||||||||
1990 | 65.23 | 66.46 | 75.52 | 84.54 | b | 91.40 | a | 105.17 | 96.00 | 93.10 | 94.10 | 86.42 | 75.33 | 61.61 | 82.91 | |||||||||||
1991 | 62.90 | a | 71.54 | 69.39 | 81.70 | 90.90 | 98.43 | 100.52 | 97.32 | 92.33 | 87.26 | 71.33 | 61.52 | 82.09 | ||||||||||||
1992 | 60.19 | 67.22 | b | 70.52 | 85.57 | 88.45 | 99.43 | 99.13 | a | 96.16 | 95.70 | 87.90 | 69.86 | a | 62.48 | 81.89 | ||||||||||
1993 | 63.72 | b | 64.54 | 73.74 | 83.30 | 92.48 | 101.90 | a | 99.29 | 95.87 | 94.33 | 82.52 | 70.97 | 67.00 | a | 82.47 | ||||||||||
1994 | 68.00 | 67.61 | 75.79 | b | 82.93 | 89.68 | 103.33 | 102.26 | 100.16 | 94.03 | 82.42 | 69.43 | b | 63.97 | 83.30 | |||||||||||
1995 | 62.39 | 71.32 | 72.90 | 79.00 | 86.26 | 98.07 | 101.87 | 99.94 | 94.07 | 88.52 | 78.27 | 67.74 | 83.36 | |||||||||||||
1996 | 70.00 | 71.76 | 76.39 | 85.97 | a | 95.81 | 103.13 | 101.84 | 98.80 | a | 90.50 | 84.87 | 75.23 | 68.84 | 85.26 | |||||||||||
1997 | 62.74 | 68.96 | 79.39 | 79.47 | 93.83 | a | 98.33 | 100.16 | 97.10 | 95.57 | 82.48 | 74.14 | a | 59.74 | 82.66 | |||||||||||
1998 | 66.71 | 61.14 | 71.10 | 76.70 | 89.19 | 97.83 | 99.20 | a | 97.90 | 96.43 | b | 84.97 | 75.40 | 66.23 | 81.90 | |||||||||||
1999 | 69.97 | 74.33 | a | 78.53 | a | 78.14 | a | 90.03 | 97.47 | 92.65 | 94.94 | 92.87 | 88.52 | 81.30 | 64.81 | 83.63 | ||||||||||
2000 | 70.60 | a | 73.62 | 73.90 | a | 86.57 | 96.29 | 97.68 | b | 99.84 | 96.23 | 97.07 | b | 78.29 | 64.67 | 68.42 | 83.60 | |||||||||
2001 | 61.06 | 66.82 | 73.84 | 82.40 | 93.97 | 100.13 | 95.68 | 97.33 | a | 95.47 | 86.61 | 74.63 | 62.77 | a | 82.56 | |||||||||||
2002 | 65.35 | 71.25 | 76.48 | 87.03 | 92.94 | 104.00 | 99.39 | 98.46 | c | 93.53 | k | 83.00 | 74.97 | 63.61 | 83.32 | a | ||||||||||
2003 | 73.77 | 66.85 | a | 73.60 | a | 81.25 | b | 94.03 | 100.47 | 104.71 | 99.67 | d | 97.43 | 92.00 | 78.44 | e | 70.67 | j | 87.47 | a | ||||||
2004 | 66.41 | i | 62.86 | h | 83.44 | d | 78.31 | a | 92.42 | 99.10 | a | 98.48 | 94.60 | a | 91.66 | a | 81.13 | 65.60 | 63.29 | 84.80 | b | |||||
2005 | 64.30 | a | 63.00 | c | 70.16 | 82.03 | 91.48 | 98.93 | 102.79 | b | 93.48 | 93.27 | 83.55 | 75.13 | ----- | z | 83.47 | a | ||||||||
2006 | 68.10 | 72.79 | 71.61 | 83.63 | 93.32 | 100.63 | 98.32 | 90.97 | 86.37 | 80.42 | 75.73 | 64.19 | 82.17 | |||||||||||||
2007 | 58.65 | 67.64 | 76.23 | 82.40 | 91.84 | ----- | z | 97.63 | a | 96.61 | 93.20 | ----- | z | ----- | z | 60.19 | 80.49 | c | ||||||||
2008 | 61.45 | 68.79 | 72.40 | u | 83.03 | 87.52 | 100.53 | 94.84 | 94.42 | 91.07 | 84.39 | 77.53 | 64.19 | 82.52 | a | |||||||||||
2009 | 67.03 | 66.75 | t | 74.33 | v | 80.89 | b | 91.94 | 94.85 | q | 100.13 | ----- | z | 92.87 | 81.87 | 75.93 | 60.84 | 81.44 | d | |||||||
2010 | 63.39 | 62.86 | 71.03 | 79.40 | 89.32 | 100.23 | 98.70 | a | 96.57 | a | 94.87 | 82.74 | 70.79 | a | 69.13 | a | 81.59 | |||||||||
2011 | 64.94 | 66.11 | 79.71 | 84.57 | 87.23 | 101.86 | a | 98.84 | 99.29 | 91.93 | a | 84.83 | a | 69.66 | a | 58.29 | 82.27 | |||||||||
2012 | 67.87 | 68.55 | 77.33 | a | ----- | z | 93.68 | 103.24 | a | 102.97 | b | 98.65 | ----- | z | ----- | z | ----- | z | ----- | z | 87.47 | e | ||||
2013 | 61.03 | 63.39 | ----- | z | ----- | z | ----- | z | 104.50 | v | 96.13 | 94.87 | 90.97 | 82.16 | 72.17 | 63.19 | 77.99 | d | ||||||||
2014 | 69.81 | 74.00 | 76.97 | 82.73 | 90.16 | 101.60 | 97.87 | 92.52 | 89.13 | 84.68 | 72.67 | 63.90 | 83.00 | |||||||||||||
2015 | 64.48 | 73.32 | 77.97 | 81.40 | 86.81 | 101.33 | 95.77 | 97.42 | 91.43 | 81.58 | 71.07 | 62.74 | 82.11 | |||||||||||||
2016 | 62.68 | 75.17 | 78.39 | 81.17 | 88.65 | 101.23 | 101.29 | 94.32 | 89.37 | 88.90 | 73.83 | 67.10 | 83.51 | |||||||||||||
2017 | 62.74 | 70.75 | 82.19 | 85.53 | 90.19 | 104.17 | 96.71 | 95.00 | 93.07 | 89.16 | 80.87 | 67.35 | 84.81 | |||||||||||||
2018 | 70.19 | 68.86 | 75.97 | 87.20 | 93.94 | 100.97 | 98.52 | 96.26 | 94.33 | 77.32 | 71.40 | 62.61 | 83.13 | |||||||||||||
2019 | 63.48 | 61.57 | 74.29 | 83.10 | 84.48 | ----- | z | 101.00 | 99.87 | 91.03 | 82.97 | 73.07 | 62.58 | 79.77 | a | |||||||||||
2020 | 65.48 | 66.41 | 72.39 | 84.93 | 95.35 | 100.80 | 99.81 | 102.48 | 94.17 | 88.84 | 75.57 | 64.10 | 84.19 | |||||||||||||
2021 | 64.90 | 69.68 | 73.00 | 84.63 | 92.10 | 102.33 | 95.39 | 95.03 | 91.87 | 83.42 | 77.97 | 67.52 | 83.15 | |||||||||||||
2022 | 64.77 | 67.57 | 75.97 | 87.13 | 94.29 | 99.47 | 98.90 | 91.61 | 91.87 | 79.16 | 68.87 | 63.58 | 81.93 | |||||||||||||
2023 | 61.16 | 63.39 | 71.55 | 85.40 | 90.00 | 97.53 | 106.06 | 98.94 | 95.23 | 86.29 | 74.17 | 65.84 | 82.96 | |||||||||||||
2024 | 62.84 | 68.34 | 70.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.14 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 64.74 | 68.41 | 74.17 | 82.16 | 90.48 | 99.81 | 99.07 | 96.42 | 92.81 | 84.01 | 73.11 | 64.38 | 82.53 | |||||||||||||
S.D. | 3.40 | 3.57 | 4.00 | 3.37 | 2.89 | 2.48 | 2.69 | 2.31 | 2.39 | 3.54 | 3.57 | 3.02 | 1.20 | |||||||||||||
SKEW | 0.34 | -0.27 | 0.24 | -0.29 | 0.10 | -0.09 | 0.02 | -0.04 | -0.19 | 0.02 | -0.04 | 0.23 | 0.25 | |||||||||||||
MAX | 73.77 | 75.17 | 83.44 | 90.79 | 96.29 | 105.17 | 106.06 | 102.48 | 97.43 | 92.00 | 81.30 | 72.00 | 85.57 | |||||||||||||
MIN | 57.13 | 60.25 | 63.77 | 73.93 | 84.48 | 94.14 | 92.65 | 90.97 | 86.37 | 77.32 | 64.67 | 58.29 | 79.78 | |||||||||||||
YRS | 57 | 55 | 56 | 55 | 56 | 55 | 59 | 58 | 56 | 57 | 56 | 56 | 44 |