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 | 76.00 | ----- | z | |
1965 | 76.00 | 78.00 | 83.00 | 97.00 | 95.00 | 101.00 | 102.00 | 99.00 | 95.00 | a | 96.00 | 84.00 | 77.00 | a | 102.00 | b | ||||||||||
1966 | 72.00 | 75.00 | 84.00 | 87.00 | 96.00 | 102.00 | 103.00 | 95.00 | 93.00 | 89.00 | 84.00 | 78.00 | 103.00 | |||||||||||||
1967 | 79.00 | 81.00 | 90.00 | 87.00 | 94.00 | 100.00 | 102.00 | 95.00 | 93.00 | 90.00 | a | 82.00 | 67.00 | 102.00 | a | |||||||||||
1968 | 69.00 | 79.00 | a | 80.00 | 84.00 | 96.00 | 104.00 | 98.00 | 91.00 | 97.00 | 90.00 | 79.00 | 74.00 | 104.00 | a | |||||||||||
1969 | 75.00 | 73.00 | 88.00 | 91.00 | 100.00 | a | 105.00 | 104.00 | 98.00 | a | 97.00 | 90.00 | a | 77.00 | 75.00 | b | 105.00 | e | ||||||||
1970 | 78.00 | 78.00 | 78.00 | a | 84.00 | 99.00 | 107.00 | a | 105.00 | b | 98.00 | g | 97.00 | 86.00 | 80.00 | 79.00 | a | 107.00 | l | |||||||
1971 | 82.00 | 78.00 | a | 89.00 | a | 89.00 | 92.00 | a | 102.00 | 104.00 | 95.00 | 96.00 | 84.00 | 82.00 | 76.00 | a | 104.00 | d | ||||||||
1972 | 75.00 | 82.00 | a | 87.00 | 90.00 | 91.00 | a | 101.00 | a | 102.00 | 101.00 | c | 93.00 | 95.00 | 76.00 | 72.00 | 102.00 | f | ||||||||
1973 | 70.00 | d | 76.00 | 73.00 | a | 85.00 | a | 94.00 | a | 108.00 | 105.00 | b | 100.00 | 100.00 | 92.00 | 87.00 | 78.00 | 108.00 | i | |||||||
1974 | 75.00 | b | 77.00 | a | 86.00 | a | 91.00 | b | 101.00 | 106.00 | e | 100.00 | 96.00 | 99.00 | 89.00 | a | 77.00 | 68.00 | 106.00 | l | ||||||
1975 | 78.00 | a | 76.00 | 81.00 | 85.00 | 93.00 | a | 104.00 | c | 106.00 | 104.00 | 99.00 | 92.00 | 84.00 | 75.00 | 106.00 | e | |||||||||
1976 | 75.00 | 81.00 | 82.00 | 85.00 | 98.00 | a | 103.00 | 104.00 | a | 100.00 | 92.00 | 85.00 | 79.00 | 69.00 | 104.00 | b | ||||||||||
1977 | 68.00 | 79.00 | 78.00 | 88.00 | 101.00 | 105.00 | 100.00 | 100.00 | 95.00 | 90.00 | 81.00 | 78.00 | a | 105.00 | a | |||||||||||
1978 | 70.00 | 72.00 | 83.00 | 86.00 | 97.00 | 104.00 | 104.00 | a | 96.00 | a | 92.00 | a | 92.00 | 82.00 | a | 72.00 | 104.00 | d | ||||||||
1979 | 67.00 | 78.00 | 81.00 | 87.00 | 94.00 | 104.00 | 106.00 | 100.00 | 100.00 | a | 95.00 | 78.00 | 75.00 | 106.00 | a | |||||||||||
1980 | 73.00 | 80.00 | 78.00 | 89.00 | 92.00 | 107.00 | 104.00 | 98.00 | a | 99.00 | a | 94.00 | 84.00 | a | 79.00 | 107.00 | c | |||||||||
1981 | 74.00 | 80.00 | a | 80.00 | 88.00 | 90.00 | 104.00 | 98.00 | 99.00 | 97.00 | 85.00 | b | 82.00 | 75.00 | 104.00 | c | ||||||||||
1982 | 77.00 | 80.00 | c | 83.00 | i | 89.00 | j | 96.00 | a | 102.00 | b | 101.00 | a | 99.00 | 101.00 | 90.00 | 77.00 | 71.00 | ----- | z | ||||||
1983 | 69.00 | a | 74.00 | b | 81.00 | 84.00 | b | 95.00 | 97.00 | b | 101.00 | 95.00 | 100.00 | 84.00 | 76.00 | 72.00 | a | 101.00 | h | |||||||
1984 | 74.00 | a | 73.00 | a | 81.00 | 86.00 | d | 102.00 | 99.00 | 97.00 | a | 96.00 | 93.00 | 83.00 | a | 80.00 | 70.00 | c | 102.00 | k | ||||||
1985 | 70.00 | 77.00 | a | 84.00 | a | 87.00 | a | 94.00 | 108.00 | 105.00 | a | 102.00 | 93.00 | a | 89.00 | d | 77.00 | a | 72.00 | a | 108.00 | k | ||||
1986 | 76.00 | 86.00 | a | 89.00 | 88.00 | a | 95.00 | 104.00 | 102.00 | 101.00 | 96.00 | 85.00 | 75.00 | b | 80.00 | b | 104.00 | f | ||||||||
1987 | 75.00 | b | 75.00 | 79.00 | 90.00 | b | 90.00 | a | 101.00 | 103.00 | a | 97.00 | 93.00 | a | 91.00 | 80.00 | c | 78.00 | a | 103.00 | k | |||||
1988 | 72.00 | 81.00 | a | 90.00 | 88.00 | a | 95.00 | b | 101.00 | c | 98.00 | 96.00 | a | 96.00 | b | 89.00 | 86.00 | a | 71.00 | 101.00 | k | |||||
1989 | 68.00 | 83.00 | 91.00 | a | 97.00 | a | 100.00 | 106.00 | 107.00 | 94.00 | 96.00 | 91.00 | 88.00 | a | 75.00 | a | 107.00 | d | ||||||||
1990 | 75.00 | a | 80.00 | a | 85.00 | b | 91.00 | a | 96.00 | a | 109.00 | 104.00 | b | 98.00 | 99.00 | a | 89.00 | a | 82.00 | a | 71.00 | c | 109.00 | n | ||
1991 | 69.00 | 76.00 | a | 82.00 | 90.00 | a | 96.00 | a | 103.00 | 101.00 | 99.00 | 93.00 | 92.00 | a | 83.00 | a | 71.00 | a | 103.00 | f | ||||||
1992 | 69.00 | b | 75.00 | 78.00 | 95.00 | a | 93.00 | a | 102.00 | 105.00 | 100.00 | 98.00 | 92.00 | 78.00 | 71.00 | 105.00 | d | |||||||||
1993 | 72.00 | 72.00 | b | 86.00 | a | 91.00 | b | 96.00 | 106.00 | b | 103.00 | 101.00 | 97.00 | a | 93.00 | a | 78.00 | a | 75.00 | c | 106.00 | m | ||||
1994 | 74.00 | a | 78.00 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 99.00 | k | 92.00 | a | 87.00 | c | 74.00 | a | ----- | z |
2002 | 76.00 | a | 76.00 | b | 85.00 | a | 91.00 | c | 104.00 | 106.00 | b | 106.00 | a | 100.00 | d | 98.00 | a | 90.00 | 83.00 | 73.00 | 106.00 | o | ||||
2003 | 79.00 | b | 81.00 | 85.00 | c | 88.00 | 99.00 | c | 101.00 | a | 107.00 | a | 101.00 | c | 100.00 | a | 95.00 | b | 82.00 | 80.00 | 107.00 | p | ||||
2004 | 72.00 | a | 80.00 | f | 88.00 | c | 86.00 | j | 95.00 | a | 102.00 | a | 101.00 | b | 99.00 | a | 97.00 | d | 91.00 | a | 78.00 | c | 76.00 | b | ----- | z |
2005 | 73.00 | b | 73.00 | c | 81.00 | d | 86.00 | i | 104.00 | c | 105.00 | d | 107.00 | c | 100.00 | g | 98.00 | d | 94.00 | d | 86.00 | 80.00 | c | ----- | z | |
2006 | 76.00 | f | 80.00 | c | 80.00 | c | 90.00 | d | 98.00 | c | 104.00 | c | 103.00 | c | 96.00 | d | 92.00 | k | 92.00 | e | 83.00 | m | 74.00 | f | ----- | z |
2007 | 73.00 | h | 77.00 | 88.00 | d | 87.00 | d | 94.00 | e | 102.00 | b | 106.00 | 98.00 | d | 96.00 | d | 90.00 | g | 89.00 | f | 76.00 | ----- | z | |||
2008 | 69.00 | a | 81.00 | c | 84.00 | d | 88.00 | 99.00 | a | 104.00 | b | 99.00 | b | 98.00 | b | 94.00 | c | 89.00 | d | 85.00 | d | 73.00 | c | ----- | z | |
2009 | 78.00 | d | 90.00 | a | 85.00 | d | 90.00 | b | 97.00 | b | 97.00 | i | 103.00 | c | 101.00 | g | 94.00 | j | 88.00 | e | 84.00 | y | ----- | z | ----- | z |
2010 | 69.00 | g | 70.00 | i | 84.00 | o | 85.00 | i | 95.00 | q | 104.00 | k | 101.00 | g | 100.00 | f | 97.00 | g | 93.00 | m | 85.00 | n | 78.00 | n | ----- | z |
2011 | 76.00 | l | 80.00 | l | 85.00 | k | 91.00 | j | 98.00 | i | 108.00 | j | 102.00 | g | 103.00 | f | 100.00 | h | 92.00 | j | 84.00 | j | 77.00 | o | ----- | z |
2012 | 77.00 | m | 76.00 | e | 86.00 | d | 96.00 | f | 100.00 | f | 105.00 | h | 104.00 | f | 102.00 | a | 95.00 | l | 95.00 | d | 86.00 | g | 78.00 | c | ----- | z |
2013 | 75.00 | g | 72.00 | g | 88.00 | k | 91.00 | d | 97.00 | j | 106.00 | b | 102.00 | d | 101.00 | g | 98.00 | b | 90.00 | i | 81.00 | i | 77.00 | j | ----- | z |
2014 | 75.00 | h | 87.00 | f | 83.00 | i | 90.00 | i | 101.00 | i | 106.00 | f | 104.00 | i | 97.00 | f | 100.00 | i | 91.00 | j | 84.00 | b | 76.00 | a | ----- | z |
2015 | 77.00 | b | 82.00 | a | 90.00 | 87.00 | b | 99.00 | e | 106.00 | c | 99.00 | d | 104.00 | a | 98.00 | e | 97.00 | d | 79.00 | b | 78.00 | e | ----- | z | |
2016 | 74.00 | h | 91.00 | e | 87.00 | h | 90.00 | d | 95.00 | e | 111.00 | d | 106.00 | g | 96.00 | e | 94.00 | g | 87.00 | o | 80.00 | i | 75.00 | k | ----- | z |
2017 | 73.00 | h | 81.00 | l | 84.00 | l | 89.00 | o | 94.00 | v | 108.00 | q | 103.00 | 95.00 | 96.00 | 91.00 | a | 84.00 | j | 74.00 | h | ----- | z | |||
2018 | 71.00 | j | 76.00 | b | 81.00 | d | 88.00 | e | 97.00 | l | 104.00 | k | 103.00 | h | 101.00 | j | 96.00 | i | 87.00 | g | 75.00 | l | 71.00 | m | ----- | z |
2019 | 68.00 | k | 71.00 | i | 80.00 | h | 87.00 | i | 89.00 | n | 102.00 | p | 102.00 | f | 102.00 | f | 95.00 | f | 87.00 | e | 78.00 | e | 71.00 | f | ----- | z |
2020 | 70.00 | f | 72.00 | c | 80.00 | h | 93.00 | f | 100.00 | c | 103.00 | h | 106.00 | h | 105.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 73.51 | 78.29 | 83.59 | 88.68 | 96.38 | 103.90 | 102.75 | 98.26 | 96.42 | 90.32 | 81.05 | 74.60 | 104.38 | |||||||||||||
S.D. | 3.73 | 4.28 | 4.22 | 3.13 | 3.49 | 2.86 | 2.71 | 2.85 | 2.57 | 3.48 | 3.51 | 3.45 | 1.61 | |||||||||||||
SKEW | 0.08 | 0.95 | -0.13 | 0.86 | 0.30 | 0.09 | -0.34 | -0.13 | -0.17 | -0.27 | 0.18 | -0.26 | 0.22 | |||||||||||||
MAX | 82.00 | 91.00 | 91.00 | 97.00 | 104.00 | 111.00 | 107.00 | 104.00 | 101.00 | 97.00 | 88.00 | 80.00 | 107.00 | |||||||||||||
MIN | 67.00 | 72.00 | 73.00 | 84.00 | 90.00 | 97.00 | 97.00 | 91.00 | 92.00 | 83.00 | 75.00 | 67.00 | 102.00 | |||||||||||||
YRS | 37 | 42 | 39 | 38 | 40 | 39 | 40 | 38 | 38 | 41 | 38 | 40 | 13 |