YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 101.58 | g | 90.97 | b | 88.70 | 80.39 | 75.47 | 63.65 | 79.83 | g | ||||
1967 | 65.10 | 69.39 | 82.13 | 86.90 | 91.03 | a | 97.50 | 99.61 | c | 94.52 | 89.80 | 85.57 | a | 70.67 | 59.33 | d | 82.63 | |||||||||
1968 | 59.45 | 67.76 | 70.23 | 79.17 | 91.58 | 100.33 | 93.94 | 91.90 | a | 89.15 | d | 86.29 | 68.90 | 62.11 | d | 80.07 | ||||||||||
1969 | 67.86 | c | 68.74 | a | 69.72 | b | 85.93 | 94.06 | n | 98.15 | d | 99.03 | a | 99.26 | 91.97 | 83.20 | a | 69.38 | a | 63.26 | l | 83.32 | b | |||
1970 | 65.50 | c | 66.83 | d | 72.39 | 82.06 | l | ----- | z | ----- | z | 97.58 | g | 95.23 | 88.87 | 75.00 | 72.41 | a | 67.45 | 75.46 | d | |||||
1971 | 64.10 | 69.79 | 76.16 | 82.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.92 | q | ----- | z | 73.15 | h | ||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 95.48 | a | 99.29 | 94.00 | 87.83 | 82.90 | a | 66.20 | 61.90 | 83.94 | e | |||||
1973 | 55.68 | 59.71 | 68.94 | ----- | z | 86.45 | 97.00 | 96.29 | 95.68 | 92.63 | 84.87 | 74.27 | 64.10 | b | 79.60 | a | ||||||||||
1974 | 60.87 | 65.43 | 78.42 | 82.47 | 91.97 | 101.33 | 97.23 | 92.48 | 84.47 | 79.83 | b | 66.87 | 56.97 | b | 79.86 | |||||||||||
1975 | 57.83 | a | 63.32 | 72.19 | 77.97 | 86.74 | 98.27 | 94.29 | 96.10 | 87.48 | a | 83.81 | 72.07 | 60.97 | 79.25 | |||||||||||
1976 | 59.23 | 71.90 | 75.42 | 81.53 | 85.48 | 98.13 | 92.94 | 96.65 | 85.10 | 74.74 | 61.77 | 56.27 | a | 78.26 | ||||||||||||
1977 | 57.13 | a | 67.61 | 73.03 | a | 83.30 | 91.42 | 100.27 | 98.87 | 100.16 | 96.36 | b | 80.31 | b | 73.21 | b | 65.87 | 82.30 | ||||||||
1978 | 61.27 | a | 62.05 | i | 75.23 | 85.77 | d | 91.39 | 101.68 | b | 101.30 | a | 95.35 | 83.86 | a | 80.45 | b | 68.43 | 59.55 | b | 82.21 | a | ||||
1979 | 55.00 | a | 64.37 | a | 72.48 | b | 81.83 | 87.16 | 94.17 | 99.87 | 93.10 | 91.00 | 87.71 | 66.87 | 60.93 | b | 79.54 | |||||||||
1980 | 63.35 | 65.38 | 72.33 | a | 80.54 | b | 89.89 | c | 103.83 | 101.71 | 93.84 | 87.27 | 76.32 | 64.97 | 63.65 | 80.26 | ||||||||||
1981 | 57.52 | 68.29 | 68.77 | 80.96 | e | 88.38 | g | 99.30 | 97.87 | 91.61 | 88.50 | b | 80.55 | 74.97 | 65.61 | 79.45 | a | |||||||||
1982 | 61.70 | a | 65.79 | 75.35 | 79.86 | b | 87.52 | b | 99.03 | a | 99.68 | f | 96.52 | f | 92.50 | 80.26 | 65.77 | 52.74 | 76.05 | b | ||||||
1983 | 56.13 | a | 65.22 | a | 69.60 | k | 73.03 | a | 86.70 | k | 96.67 | 98.79 | b | 96.10 | k | 96.93 | o | 79.97 | a | 68.70 | 59.77 | 74.79 | d | |||
1984 | 57.94 | 65.17 | 72.93 | a | 80.10 | 92.32 | 93.67 | 96.19 | 91.79 | c | 88.84 | e | 75.07 | a | 66.70 | 59.45 | 78.35 | |||||||||
1985 | 54.16 | 62.44 | a | 72.77 | 82.83 | 91.45 | 98.07 | 98.57 | c | 96.08 | g | 88.87 | 78.32 | 72.96 | d | 62.81 | 78.48 | a | ||||||||
1986 | 65.61 | 69.50 | 75.35 | 86.83 | 90.10 | 93.10 | j | 93.48 | 92.62 | g | 89.30 | 79.11 | c | 66.10 | a | 55.81 | 77.12 | b | ||||||||
1987 | 60.03 | 64.46 | 68.63 | a | 77.77 | 86.32 | 94.70 | 96.58 | e | 92.32 | f | 87.33 | 84.16 | 69.59 | a | 58.75 | c | 77.12 | a | |||||||
1988 | 59.06 | 65.86 | 73.19 | 80.23 | 89.90 | a | 95.00 | 93.16 | 89.13 | 88.80 | 83.00 | c | 73.34 | a | 59.15 | e | 79.15 | |||||||||
1989 | 61.27 | i | 65.68 | f | 74.62 | g | 86.48 | a | 92.66 | b | 97.83 | f | 93.54 | g | 90.10 | ----- | z | ----- | z | ----- | z | 59.16 | 82.10 | h | ||
1990 | 62.68 | 66.86 | 73.23 | 84.40 | 89.94 | 99.97 | 90.06 | 87.06 | 85.52 | a | 79.47 | a | 70.61 | b | 60.84 | 79.22 | ||||||||||
1991 | 57.70 | a | 66.46 | 73.00 | 81.87 | 92.61 | 96.33 | 89.00 | 90.16 | 82.67 | 82.42 | 66.67 | 57.65 | 78.04 | ||||||||||||
1992 | 52.71 | 63.43 | a | 71.87 | 83.30 | 86.74 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.61 | g | ||||
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.00 | 83.29 | 67.03 | a | 59.87 | a | 75.80 | h | ||
1994 | 65.13 | 71.71 | 74.70 | a | 83.77 | 93.71 | 102.97 | 98.68 | 96.87 | 90.10 | ----- | z | 70.80 | 61.90 | 82.76 | a | ||||||||||
1995 | 60.19 | 70.18 | 74.61 | 81.27 | 91.65 | 96.83 | 97.48 | 95.13 | 88.47 | 85.32 | 72.27 | 63.94 | 81.44 | |||||||||||||
1996 | 66.16 | 74.76 | 72.39 | 82.23 | 96.87 | 98.97 | 96.32 | 90.87 | 86.55 | a | 83.73 | a | 71.23 | 62.97 | 81.92 | |||||||||||
1997 | 58.90 | a | 64.07 | 75.16 | 78.40 | 90.58 | 95.47 | 96.10 | 93.19 | 92.23 | 81.71 | 67.27 | 54.48 | 78.96 | ||||||||||||
1998 | 65.06 | 63.39 | 73.40 | a | 80.00 | 92.32 | 99.60 | 97.77 | 93.68 | 92.03 | 81.65 | 72.90 | 61.97 | 81.15 | ||||||||||||
1999 | 65.45 | ----- | z | ----- | z | ----- | z | 91.39 | 95.50 | d | 93.48 | 94.42 | 91.24 | a | 82.48 | 76.43 | 59.71 | 83.35 | c | |||||||
2000 | 68.90 | 73.59 | 77.13 | 86.21 | a | 95.74 | 94.37 | 98.06 | 95.10 | 93.77 | 79.63 | a | 63.00 | 61.33 | a | 82.24 | ||||||||||
2001 | 58.81 | 67.93 | 73.65 | 85.14 | a | 93.32 | 98.43 | 96.65 | 94.00 | 91.83 | 84.45 | 71.13 | 61.29 | 81.39 | ||||||||||||
2002 | 63.74 | 62.04 | 74.48 | 87.83 | 92.65 | 100.30 | 94.97 | 97.16 | 91.23 | 79.61 | 68.90 | 59.06 | 81.00 | |||||||||||||
2003 | 66.58 | 66.57 | 72.58 | 83.43 | 92.97 | 97.97 | 98.90 | 96.26 | 91.00 | 83.68 | 72.60 | 62.58 | 82.09 | |||||||||||||
2004 | 60.94 | 62.72 | 74.71 | 78.07 | 91.81 | 96.40 | 97.26 | 93.52 | 87.10 | 80.74 | 63.77 | 57.03 | 78.67 | |||||||||||||
2005 | 63.39 | 62.79 | 71.52 | 81.77 | 89.58 | 98.67 | 99.06 | 92.32 | 94.10 | 80.00 | 73.27 | 63.32 | 80.81 | |||||||||||||
2006 | 65.94 | 68.57 | 76.42 | 86.90 | 94.94 | 97.83 | 96.10 | 89.52 | 85.80 | 80.58 | 75.30 | 59.35 | 81.44 | |||||||||||||
2007 | 53.45 | 67.43 | 76.68 | 81.70 | 87.97 | 97.17 | 94.58 | 93.87 | 88.80 | 84.23 | 71.47 | 60.42 | 79.81 | |||||||||||||
2008 | 60.61 | 69.79 | 75.13 | 82.47 | 89.87 | 100.67 | 90.87 | 90.16 | 83.17 | 81.71 | 71.07 | 64.29 | 79.98 | |||||||||||||
2009 | 65.06 | 71.82 | 75.10 | 79.77 | 90.52 | 95.60 | 98.19 | 94.52 | 87.97 | 80.03 | 72.50 | 56.71 | 80.65 | |||||||||||||
2010 | 58.29 | 62.00 | 70.61 | 80.63 | 90.52 | 99.73 | 93.48 | 95.23 | 89.77 | 83.77 | 72.10 | 67.81 | 80.33 | |||||||||||||
2011 | 59.90 | 64.89 | 80.71 | 87.13 | 90.42 | 102.00 | 98.19 | 98.10 | 91.77 | 84.26 | 70.07 | 54.58 | 81.84 | |||||||||||||
2012 | 64.32 | 68.07 | 76.71 | 87.23 | 90.61 | 101.13 | 93.94 | 97.52 | 89.87 | 85.32 | 75.43 | 64.23 | 82.87 | |||||||||||||
2013 | 56.84 | 64.46 | 77.23 | 83.80 | 89.13 | 100.87 | 92.19 | 95.81 | 89.40 | 82.71 | 67.77 | 58.58 | 79.90 | |||||||||||||
2014 | 62.77 | 71.46 | 75.06 | 81.63 | 88.58 | 102.13 | 97.29 | 91.10 | 86.93 | 85.52 | 66.73 | 62.84 | 81.00 | |||||||||||||
2015 | 54.87 | 67.64 | 72.13 | 79.90 | 88.06 | 97.37 | 97.19 | 98.35 | 92.67 | 81.23 | 69.53 | 63.10 | 80.17 | |||||||||||||
2016 | 58.84 | 72.07 | 79.77 | 82.53 | 88.58 | 98.00 | 101.55 | 91.84 | 88.53 | 85.32 | 72.50 | 62.45 | 81.83 | |||||||||||||
2017 | 63.77 | 72.32 | 82.61 | 86.37 | 90.03 | 100.03 | 95.26 | 93.32 | 91.37 | 83.97 | 77.57 | 62.39 | 83.25 | |||||||||||||
2018 | 62.65 | 71.29 | 76.77 | 85.67 | 95.52 | 100.73 | 97.23 | 96.10 | 90.17 | 76.77 | 68.03 | 59.52 | 81.70 | |||||||||||||
2019 | 61.19 | 67.61 | 74.00 | 83.27 | 88.81 | 96.80 | 99.19 | 99.84 | 90.97 | 79.13 | 67.93 | 60.55 | 80.77 | |||||||||||||
2020 | 63.00 | 63.52 | 74.19 | 84.10 | 94.10 | 99.17 | 100.39 | 100.97 | 89.53 | 85.42 | 77.23 | 60.29 | 82.66 | |||||||||||||
2021 | 60.00 | 67.00 | 74.58 | 81.40 | 91.58 | 98.60 | 94.29 | 92.39 | 90.97 | 83.65 | 73.87 | 69.06 | 81.45 | |||||||||||||
2022 | 60.32 | 63.11 | 73.35 | 86.90 | 95.61 | 98.97 | 98.77 | 91.58 | 88.30 | 76.87 | 66.10 | 62.35 | 80.19 | |||||||||||||
2023 | 63.19 | 64.14 | 75.65 | 83.37 | 91.23 | 100.73 | 103.52 | 98.52 | 97.30 | 85.55 | 70.20 | 64.68 | 83.17 | |||||||||||||
2024 | 61.97 | 69.14 | 72.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.00 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 61.05 | 66.98 | 74.30 | 82.66 | 90.83 | 98.47 | 96.77 | 94.21 | 89.50 | 81.78 | 70.23 | 61.04 | 80.74 | |||||||||||||
S.D. | 3.83 | 3.40 | 3.00 | 3.07 | 2.62 | 2.39 | 3.04 | 3.09 | 3.00 | 3.08 | 3.66 | 3.33 | 1.40 | |||||||||||||
SKEW | -0.17 | 0.22 | 0.61 | -0.40 | 0.11 | -0.01 | -0.38 | 0.12 | 0.03 | -0.47 | -0.08 | -0.07 | -0.09 | |||||||||||||
MAX | 68.90 | 74.76 | 82.61 | 87.83 | 96.87 | 103.83 | 103.52 | 100.97 | 97.30 | 87.71 | 77.57 | 69.06 | 83.25 | |||||||||||||
MIN | 52.71 | 59.71 | 68.63 | 73.03 | 85.48 | 93.67 | 89.00 | 87.06 | 82.67 | 74.74 | 61.77 | 52.74 | 78.04 | |||||||||||||
YRS | 55 | 53 | 53 | 52 | 50 | 51 | 51 | 50 | 54 | 54 | 55 | 55 | 40 |