YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 105.00 | d | ----- | z | 108.00 | c | ----- | z | 106.00 | a | 91.00 | 72.00 | ----- | z | ||
1979 | 65.00 | 77.00 | 83.00 | 89.00 | a | 99.00 | g | ----- | z | 110.00 | a | 104.00 | ----- | z | ----- | z | 85.00 | 90.00 | ----- | z | ||||||
1980 | ----- | z | ----- | z | 77.00 | 96.00 | 94.00 | a | 102.00 | d | 111.00 | f | 105.00 | n | 110.00 | b | 108.00 | i | 95.00 | c | 89.00 | c | ----- | z | ||
1981 | 85.00 | 90.00 | 81.00 | a | 101.00 | a | 98.00 | 110.00 | d | 113.00 | d | ----- | z | 104.00 | f | ----- | z | 92.00 | a | 83.00 | a | ----- | z | |||
1982 | 77.00 | 84.00 | c | 79.00 | 89.00 | a | 94.00 | 96.00 | c | 107.00 | c | 109.00 | i | 116.00 | b | 99.00 | a | 84.00 | 76.00 | 116.00 | v | |||||
1983 | 82.00 | 81.00 | b | 80.00 | 83.00 | a | 103.00 | d | 100.00 | e | 110.00 | c | 109.00 | f | 107.00 | b | 96.00 | d | 90.00 | b | 78.00 | b | ----- | z | ||
1984 | 81.00 | c | 84.00 | 89.00 | 98.00 | a | 110.00 | 106.00 | 108.00 | 107.00 | b | 110.00 | d | 96.00 | b | 90.00 | 72.00 | d | 110.00 | p | ||||||
1985 | 76.00 | 86.00 | 87.00 | 94.00 | c | 97.00 | 114.00 | 111.00 | 115.00 | 100.00 | e | ----- | z | 90.00 | d | 82.00 | f | ----- | z | |||||||
1986 | 85.00 | b | 89.00 | 90.00 | 91.00 | j | 104.00 | a | 110.00 | a | 106.00 | d | 109.00 | b | 105.00 | 92.00 | a | 86.00 | c | 82.00 | b | ----- | z | |||
1987 | 85.00 | 78.00 | a | 85.00 | a | 99.00 | 103.00 | 106.00 | c | 105.00 | c | 106.00 | c | 107.00 | d | 106.00 | c | 84.00 | a | 78.00 | c | 107.00 | v | |||
1988 | 80.00 | 84.00 | 99.00 | a | 98.00 | d | 104.00 | e | ----- | z | 108.00 | j | 105.00 | f | 113.00 | k | 100.00 | f | 92.00 | d | 84.00 | g | ----- | z | ||
1989 | 79.00 | i | 85.00 | h | 91.00 | f | 103.00 | f | 101.00 | e | 109.00 | h | 113.00 | l | 103.00 | h | 107.00 | d | 98.00 | i | 92.00 | i | 87.00 | g | ----- | z |
1990 | 89.00 | e | 85.00 | n | 89.00 | s | 94.00 | d | 100.00 | j | 113.00 | a | 107.00 | b | 111.00 | c | 110.00 | 99.00 | b | 90.00 | c | 84.00 | a | ----- | z | |
1991 | 77.00 | a | 88.00 | b | 78.00 | c | 90.00 | 99.00 | b | 102.00 | a | 105.00 | b | 109.00 | c | 107.00 | a | 104.00 | 95.00 | e | 79.00 | c | 109.00 | w | ||
1992 | 85.00 | 84.00 | 78.00 | a | 97.00 | d | 93.00 | c | 105.00 | k | ----- | z | 109.00 | i | 103.00 | k | 105.00 | m | 84.00 | b | 76.00 | b | ----- | z | ||
1993 | 75.00 | b | 75.00 | c | 89.00 | a | 92.00 | b | 93.00 | c | 107.00 | c | 100.00 | b | 105.00 | f | 107.00 | f | 101.00 | f | 85.00 | b | 84.00 | a | ----- | z |
1994 | 84.00 | g | 75.00 | 91.00 | b | 91.00 | e | 95.00 | 110.00 | f | 104.00 | 111.00 | 101.00 | 91.00 | b | 88.00 | 80.00 | d | ----- | z | ||||||
1995 | 78.00 | d | 87.00 | f | 76.00 | i | 86.00 | i | 95.00 | c | 103.00 | c | 115.00 | 107.00 | g | 106.00 | a | 98.00 | c | 91.00 | b | 84.00 | f | ----- | z | |
1996 | 85.00 | d | 88.00 | a | 88.00 | a | 100.00 | d | 105.00 | g | 105.00 | b | 106.00 | e | 109.00 | p | 101.00 | e | 104.00 | e | 92.00 | b | 79.00 | k | ----- | z |
1997 | 76.00 | d | 80.00 | e | 95.00 | b | 90.00 | a | 101.00 | d | 100.00 | 105.00 | 113.00 | b | 104.00 | b | 97.00 | e | 95.00 | f | 78.00 | ----- | z | |||
1998 | 77.00 | a | 70.00 | a | ----- | z | 92.00 | g | 88.00 | h | 98.00 | c | 111.00 | d | 113.00 | d | 108.00 | c | 91.00 | a | 86.00 | d | 82.00 | b | ----- | z |
1999 | 80.00 | 82.00 | b | 86.00 | b | 93.00 | a | 91.00 | d | 101.00 | d | 101.00 | 108.00 | b | 102.00 | a | 99.00 | c | 93.00 | s | 82.00 | c | ----- | z | ||
2000 | 82.00 | b | 82.00 | a | 86.00 | 94.00 | d | 105.00 | c | 108.00 | d | 108.00 | b | 107.00 | b | 108.00 | b | 93.00 | d | 80.00 | b | 81.00 | d | ----- | z | |
2001 | 81.00 | f | 85.00 | d | 87.00 | d | 95.00 | b | 105.00 | c | 106.00 | d | 106.00 | f | 107.00 | e | 105.00 | 101.00 | c | 87.00 | b | 81.00 | e | ----- | z | |
2002 | 83.00 | u | ----- | z | 86.00 | o | 96.00 | f | 103.00 | b | 106.00 | e | 108.00 | c | 110.00 | d | 109.00 | h | 96.00 | b | 89.00 | 75.00 | e | ----- | z | |
2003 | 91.00 | 79.00 | e | 87.00 | j | 83.00 | u | 109.00 | p | 103.00 | b | 108.00 | k | 107.00 | b | 107.00 | f | 102.00 | k | 83.00 | f | 82.00 | e | ----- | z | |
2004 | 80.00 | h | 80.00 | o | 94.00 | h | 98.00 | h | 101.00 | j | 98.00 | e | 104.00 | c | 107.00 | e | 105.00 | d | 97.00 | c | 74.00 | g | 83.00 | e | ----- | z |
2005 | 83.00 | b | 73.00 | j | 90.00 | p | 89.00 | h | 102.00 | e | 100.00 | c | 107.00 | k | 107.00 | h | 100.00 | d | 98.00 | a | 89.00 | ----- | z | ----- | z | |
2006 | 84.00 | l | 85.00 | a | ----- | z | 89.00 | f | ----- | z | 108.00 | a | 113.00 | 106.00 | a | 107.00 | h | 91.00 | k | 94.00 | 88.00 | c | ----- | z | ||
2007 | 83.00 | b | 88.00 | d | 96.00 | g | 99.00 | b | 95.00 | f | 103.00 | 109.00 | 112.00 | 108.00 | 100.00 | d | 89.00 | c | 84.00 | c | ----- | z | ||||
2008 | 74.00 | d | 83.00 | b | 86.00 | e | 95.00 | f | 103.00 | b | 110.00 | g | 106.00 | h | 107.00 | g | 106.00 | e | 101.00 | b | 90.00 | a | 84.00 | o | ----- | z |
2009 | 85.00 | 82.00 | a | 86.00 | e | 98.00 | a | 103.00 | 105.00 | b | 110.00 | 109.00 | c | 106.00 | 99.00 | 94.00 | 78.00 | 110.00 | l | |||||||
2010 | 79.00 | a | 80.00 | 83.00 | m | 86.00 | 92.00 | 97.00 | 109.00 | 112.00 | 108.00 | 98.00 | 96.00 | 81.00 | 112.00 | n | ||||||||||
2011 | 83.00 | 78.00 | 92.00 | 94.00 | 95.00 | 103.00 | 104.00 | 109.00 | 105.00 | 102.00 | a | 83.00 | a | 85.00 | 109.00 | b | ||||||||||
2012 | 89.00 | 84.00 | 87.00 | 99.00 | a | 104.00 | 100.00 | 107.00 | 110.00 | 104.00 | 105.00 | 94.00 | 79.00 | 110.00 | a | |||||||||||
2013 | 81.00 | 79.00 | 93.00 | 97.00 | 102.00 | 110.00 | 107.00 | 106.00 | 104.00 | 93.00 | 91.00 | 86.00 | 110.00 | |||||||||||||
2014 | 83.00 | 91.00 | 90.00 | a | 96.00 | 102.00 | 101.00 | 111.00 | 104.00 | 107.00 | 102.00 | 92.00 | 80.00 | 111.00 | a | |||||||||||
2015 | 83.00 | 88.00 | 93.00 | 96.00 | 98.00 | 103.00 | 98.00 | 108.00 | 103.00 | 97.00 | 89.00 | 83.00 | 108.00 | |||||||||||||
2016 | 75.00 | 87.00 | 85.00 | 93.00 | 94.00 | 113.00 | 108.00 | a | 105.00 | a | 103.00 | 94.00 | 90.00 | 76.00 | 113.00 | b | ||||||||||
2017 | 76.00 | b | 82.00 | 90.00 | 94.00 | 100.00 | 108.00 | 112.00 | 109.00 | 107.00 | 101.00 | 93.00 | 85.00 | 112.00 | b | |||||||||||
2018 | 83.00 | 85.00 | 89.00 | 93.00 | 96.00 | 99.00 | 114.00 | 109.00 | 105.00 | 92.00 | 89.00 | c | 82.00 | 114.00 | c | |||||||||||
2019 | 77.00 | 70.00 | 81.00 | 92.00 | 86.00 | 105.00 | 105.00 | 105.00 | a | 105.00 | 96.00 | 89.00 | 76.00 | 105.00 | a | |||||||||||
2020 | 80.00 | 83.00 | 82.00 | a | 97.00 | 99.00 | 102.00 | 108.00 | 110.00 | 115.00 | 105.00 | 94.00 | 81.00 | 115.00 | a | |||||||||||
2021 | 87.00 | 80.00 | 85.00 | 97.00 | 95.00 | 108.00 | 105.00 | 108.00 | 105.00 | 95.00 | 91.00 | 86.00 | 108.00 | |||||||||||||
2022 | 77.00 | 85.00 | 93.00 | 96.00 | 99.00 | 104.00 | 105.00 | 108.00 | 104.00 | 95.00 | 76.00 | 82.00 | a | 108.00 | a | |||||||||||
2023 | 70.00 | 75.00 | 73.00 | 97.00 | 93.00 | 104.00 | 107.00 | 107.00 | 100.00 | 101.00 | 88.00 | 81.00 | 107.00 | |||||||||||||
2024 | 78.00 | 76.00 | 76.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 80.44 | 82.10 | 85.97 | 94.49 | 98.68 | 104.30 | 107.46 | 108.50 | 105.78 | 98.31 | 89.20 | 81.03 | 110.00 | |||||||||||||
S.D. | 5.26 | 5.12 | 5.89 | 4.02 | 5.07 | 4.44 | 3.76 | 2.62 | 3.59 | 4.29 | 4.21 | 4.18 | 2.92 | |||||||||||||
SKEW | -0.46 | -0.51 | -0.17 | -0.82 | -0.20 | 0.29 | -0.22 | 0.43 | 0.73 | 0.10 | -0.89 | -0.10 | 0.17 | |||||||||||||
MAX | 91.00 | 91.00 | 99.00 | 101.00 | 110.00 | 114.00 | 115.00 | 115.00 | 116.00 | 106.00 | 96.00 | 90.00 | 115.00 | |||||||||||||
MIN | 65.00 | 70.00 | 73.00 | 83.00 | 86.00 | 96.00 | 98.00 | 104.00 | 100.00 | 91.00 | 76.00 | 72.00 | 105.00 | |||||||||||||
YRS | 39 | 39 | 35 | 35 | 37 | 40 | 37 | 34 | 37 | 36 | 41 | 39 | 13 |