YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | 68.00 | o | 80.00 | b | 90.00 | a | 91.00 | a | 100.00 | 99.00 | a | 86.00 | a | 77.00 | c | 66.00 | a | 67.00 | f | ----- | z | |
1924 | 59.00 | a | 70.00 | c | 75.00 | a | 81.00 | c | 86.00 | a | 103.00 | 101.00 | 100.00 | 89.00 | a | 86.00 | 79.00 | a | 68.00 | c | 103.00 | n | ||||
1925 | 67.00 | a | 74.00 | a | 81.00 | 90.00 | b | 96.00 | c | 100.00 | 103.00 | a | 91.00 | 87.00 | a | 83.00 | c | 72.00 | 65.00 | d | 103.00 | p | ||||
1926 | 68.00 | a | 72.00 | 73.00 | b | 76.00 | a | 83.00 | 91.00 | a | 96.00 | 99.00 | a | 96.00 | c | 84.00 | a | 73.00 | a | 71.00 | c | 99.00 | n | |||
1927 | 78.00 | b | 72.00 | c | 75.00 | a | 89.00 | 98.00 | a | 98.00 | b | 100.00 | 94.00 | 91.00 | b | 83.00 | 79.00 | a | 62.00 | d | 100.00 | p | ||||
1928 | 71.00 | 70.00 | b | 82.00 | c | 84.00 | a | 96.00 | b | 96.00 | 100.00 | a | 99.00 | 89.00 | 90.00 | a | 67.00 | a | 66.00 | b | 100.00 | m | ||||
1929 | 60.00 | a | 63.00 | a | 79.00 | 83.00 | 87.00 | c | 99.00 | a | 99.00 | 97.00 | 90.00 | 87.00 | b | 70.00 | b | 74.00 | a | 99.00 | k | |||||
1930 | 62.00 | f | 75.00 | 73.00 | b | 88.00 | 93.00 | a | 104.00 | 100.00 | a | 99.00 | 93.00 | 87.00 | b | 70.00 | a | 62.00 | 104.00 | m | ||||||
1931 | 63.00 | a | 65.00 | a | 79.00 | d | 80.00 | b | 90.00 | a | 98.00 | 99.00 | 98.00 | 95.00 | 86.00 | a | 78.00 | a | 65.00 | a | 99.00 | l | ||||
1932 | 62.00 | a | 79.00 | 79.00 | b | 85.00 | a | 96.00 | 92.00 | 98.00 | a | 98.00 | a | 89.00 | 82.00 | c | 75.00 | a | 68.00 | a | 98.00 | k | ||||
1933 | 60.00 | a | 70.00 | a | 80.00 | b | 81.00 | c | 94.00 | 102.00 | 106.00 | a | 98.00 | a | 91.00 | 81.00 | a | 74.00 | b | 74.00 | 106.00 | l | ||||
1934 | 65.00 | a | 75.00 | b | 80.00 | c | 86.00 | a | 94.00 | b | 100.00 | 106.00 | 103.00 | 92.00 | a | 87.00 | 77.00 | 64.00 | 106.00 | j | ||||||
1935 | 70.00 | b | 77.00 | a | 77.00 | b | 85.00 | b | 90.00 | c | 101.00 | 101.00 | 102.00 | a | 88.00 | c | 85.00 | c | 77.00 | c | 59.00 | b | 102.00 | v | ||
1936 | 65.00 | d | 73.00 | b | 76.00 | c | 89.00 | c | 91.00 | a | 98.00 | a | 100.00 | 106.00 | a | 96.00 | b | 85.00 | d | 71.00 | b | 64.00 | b | 106.00 | y | |
1937 | 63.00 | b | 72.00 | c | 75.00 | c | 93.00 | c | 95.00 | 98.00 | 100.00 | 103.00 | 97.00 | 87.00 | a | 77.00 | 72.00 | c | 103.00 | o | ||||||
1938 | 71.00 | a | 75.00 | b | 80.00 | b | 87.00 | a | 97.00 | a | 95.00 | a | 100.00 | 102.00 | 90.00 | 86.00 | 74.00 | 70.00 | 102.00 | h | ||||||
1939 | 68.00 | 62.00 | 76.00 | 87.00 | 94.00 | 105.00 | 98.00 | 96.00 | 99.00 | 87.00 | 73.00 | 79.00 | 105.00 | |||||||||||||
1940 | 62.00 | 78.00 | 87.00 | 87.00 | 96.00 | 100.00 | 108.00 | 98.00 | 98.00 | 88.00 | 77.00 | a | 73.00 | a | 108.00 | b | ||||||||||
1941 | 67.00 | 69.00 | 79.00 | 78.00 | 87.00 | 92.00 | 91.00 | 92.00 | 93.00 | 84.00 | 77.00 | 67.00 | 93.00 | |||||||||||||
1942 | 67.00 | 67.00 | a | 79.00 | 85.00 | 93.00 | 100.00 | a | 99.00 | 98.00 | 87.00 | 83.00 | 80.00 | 74.00 | 100.00 | b | ||||||||||
1943 | 73.00 | 74.00 | 86.00 | a | 92.00 | 90.00 | a | 98.00 | 98.00 | 104.00 | 94.00 | 86.00 | 77.00 | b | 61.00 | 104.00 | d | |||||||||
1944 | 59.00 | 67.00 | 74.00 | 79.00 | 89.00 | 97.00 | 103.00 | 105.00 | 93.00 | 82.00 | 79.00 | 65.00 | 105.00 | |||||||||||||
1945 | 65.00 | 76.00 | 77.00 | 86.00 | 98.00 | a | 101.00 | 97.00 | 99.00 | 99.00 | 80.00 | 80.00 | 66.00 | 101.00 | a | |||||||||||
1946 | 72.00 | 75.00 | 90.00 | 89.00 | a | 89.00 | a | 100.00 | 102.00 | 102.00 | 90.00 | 85.00 | 74.00 | 74.00 | 102.00 | b | ||||||||||
1947 | 68.00 | 72.00 | 79.00 | 84.00 | 90.00 | 99.00 | 101.00 | d | 99.00 | 101.00 | 89.00 | 71.00 | 70.00 | 101.00 | d | |||||||||||
1948 | 74.00 | 74.00 | 81.00 | 93.00 | 98.00 | 102.00 | a | 105.00 | 98.00 | 103.00 | 88.00 | 75.00 | 72.00 | 105.00 | a | |||||||||||
1949 | 61.00 | 72.00 | 79.00 | 81.00 | 91.00 | 96.00 | 98.00 | 97.00 | 95.00 | 88.00 | 82.00 | 68.00 | 98.00 | |||||||||||||
1950 | 80.00 | b | 78.00 | 83.00 | 94.00 | 93.00 | 100.00 | 97.00 | 99.00 | 87.00 | 88.00 | 79.00 | a | 70.00 | 100.00 | c | ||||||||||
1951 | 77.00 | 81.00 | 78.00 | 88.00 | 90.00 | 97.00 | 105.00 | 104.00 | 97.00 | 90.00 | 74.00 | 70.00 | 105.00 | |||||||||||||
1952 | 74.00 | 74.00 | 77.00 | 87.00 | 92.00 | 104.00 | 99.00 | 102.00 | 94.00 | a | 89.00 | 82.00 | 71.00 | 104.00 | a | |||||||||||
1953 | 75.00 | 72.00 | 82.00 | 90.00 | 102.00 | 107.00 | 103.00 | 103.00 | 99.00 | 93.00 | 77.00 | 67.00 | 107.00 | |||||||||||||
1954 | 70.00 | 78.00 | 83.00 | 90.00 | 89.00 | 99.00 | 103.00 | 100.00 | 99.00 | 96.00 | 78.00 | 74.00 | h | 103.00 | h | |||||||||||
1955 | 70.00 | 72.00 | 81.00 | 88.00 | 92.00 | b | 102.00 | 101.00 | 98.00 | 96.00 | 86.00 | 78.00 | 78.00 | 102.00 | b | |||||||||||
1956 | 75.00 | 78.00 | c | 85.00 | b | 87.00 | 98.00 | 101.00 | 102.00 | 101.00 | 100.00 | 92.00 | 80.00 | 70.00 | a | 102.00 | f | |||||||||
1957 | 72.00 | f | 80.00 | 75.00 | 78.00 | a | 83.00 | 107.00 | 104.00 | 99.00 | 95.00 | 91.00 | 74.00 | b | 70.00 | 107.00 | i | |||||||||
1958 | 66.00 | 70.00 | 74.00 | 79.00 | 96.00 | 100.00 | 105.00 | 100.00 | 95.00 | 89.00 | 80.00 | 77.00 | 105.00 | |||||||||||||
1959 | 68.00 | a | 76.00 | 78.00 | 95.00 | 95.00 | 101.00 | 97.00 | 101.00 | 100.00 | 89.00 | 75.00 | 68.00 | 101.00 | a | |||||||||||
1960 | 64.00 | 62.00 | 80.00 | 88.00 | 95.00 | 100.00 | a | 98.00 | 96.00 | 92.00 | 85.00 | 78.00 | 65.00 | 100.00 | a | |||||||||||
1961 | 67.00 | 78.00 | 79.00 | 86.00 | d | 95.00 | 96.00 | 95.00 | 97.00 | 94.00 | 87.00 | 75.00 | 72.00 | 97.00 | d | |||||||||||
1962 | 68.00 | 84.00 | 82.00 | 88.00 | 97.00 | 95.00 | 100.00 | 97.00 | 98.00 | b | 91.00 | 80.00 | 71.00 | 100.00 | b | |||||||||||
1963 | 73.00 | 83.00 | 88.00 | 90.00 | 97.00 | a | 96.00 | a | 99.00 | 95.00 | 92.00 | 90.00 | a | 79.00 | 71.00 | 99.00 | c | |||||||||
1964 | 70.00 | 62.00 | 72.00 | a | 88.00 | 97.00 | 97.00 | 101.00 | 101.00 | 96.00 | 86.00 | a | 79.00 | 74.00 | 101.00 | b | ||||||||||
1965 | 70.00 | 74.00 | a | 76.00 | 94.00 | 93.00 | 92.00 | 95.00 | 94.00 | 92.00 | a | 90.00 | 79.00 | 73.00 | 95.00 | b | ||||||||||
1966 | 65.00 | 64.00 | 80.00 | 84.00 | 93.00 | 95.00 | 103.00 | 96.00 | 88.00 | 85.00 | 80.00 | 67.00 | 103.00 | |||||||||||||
1967 | 73.00 | 73.00 | 83.00 | 84.00 | 93.00 | 92.00 | 93.00 | 95.00 | 93.00 | 89.00 | 77.00 | 66.00 | 95.00 | |||||||||||||
1968 | 67.00 | 67.00 | 80.00 | 80.00 | 89.00 | 104.00 | 95.00 | 94.00 | 92.00 | 90.00 | 76.00 | 70.00 | 104.00 | |||||||||||||
1969 | 72.00 | d | 71.00 | 73.00 | 84.00 | 92.00 | 97.00 | 101.00 | 99.00 | 89.00 | 89.00 | 74.00 | 70.00 | 101.00 | d | |||||||||||
1970 | 74.00 | 81.00 | 76.00 | 81.00 | 92.00 | 102.00 | 99.00 | 99.00 | 98.00 | 85.00 | 79.00 | 74.00 | 102.00 | |||||||||||||
1971 | 76.00 | 75.00 | 89.00 | 90.00 | 92.00 | 96.00 | 100.00 | 92.00 | 94.00 | 84.00 | 80.00 | 74.00 | 100.00 | |||||||||||||
1972 | 75.00 | 78.00 | 84.00 | 90.00 | 92.00 | 98.00 | 96.00 | 95.00 | 90.00 | 89.00 | 70.00 | a | 69.00 | a | 98.00 | b | ||||||||||
1973 | 68.00 | 68.00 | 72.00 | 80.00 | 89.00 | 100.00 | 100.00 | 101.00 | 94.00 | 94.00 | 82.00 | 80.00 | 101.00 | |||||||||||||
1974 | 76.00 | 75.00 | 86.00 | 89.00 | 98.00 | 100.00 | 105.00 | 95.00 | 93.00 | 84.00 | 76.00 | 67.00 | 105.00 | |||||||||||||
1975 | 76.00 | 73.00 | 80.00 | 84.00 | 91.00 | 99.00 | 93.00 | 100.00 | 95.00 | 89.00 | 84.00 | 73.00 | 100.00 | |||||||||||||
1976 | 70.00 | 80.00 | 82.00 | 86.00 | 95.00 | 106.00 | 97.00 | 95.00 | 97.00 | 85.00 | 77.00 | 72.00 | 106.00 | |||||||||||||
1977 | 56.00 | 76.00 | 79.00 | 86.00 | 97.00 | 104.00 | 101.00 | 103.00 | 95.00 | 90.00 | 81.00 | 73.00 | 104.00 | |||||||||||||
1978 | 64.00 | 67.00 | 83.00 | 89.00 | 98.00 | 104.00 | 105.00 | 101.00 | 98.00 | 89.00 | 81.00 | 72.00 | 105.00 | |||||||||||||
1979 | 61.00 | 84.00 | 78.00 | 88.00 | 94.00 | 99.00 | 101.00 | 96.00 | 99.00 | 97.00 | 69.00 | 72.00 | a | 101.00 | a | |||||||||||
1980 | 73.00 | 77.00 | 77.00 | 86.00 | 89.00 | 107.00 | 104.00 | 100.00 | 96.00 | 86.00 | 87.00 | 77.00 | 107.00 | |||||||||||||
1981 | 74.00 | 82.00 | a | 79.00 | 92.00 | 95.00 | 107.00 | 101.00 | 96.00 | 93.00 | 86.00 | 80.00 | 74.00 | 107.00 | a | |||||||||||
1982 | 72.00 | 78.00 | 81.00 | 87.00 | 89.00 | 96.00 | 96.00 | 100.00 | 97.00 | 85.00 | 80.00 | 78.00 | a | 100.00 | a | |||||||||||
1983 | 69.00 | 67.00 | 79.00 | 84.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | 94.00 | 101.00 | 98.00 | 100.00 | 91.00 | 86.00 | 74.00 | 66.00 | ----- | z | ||||||||
2003 | 71.00 | 73.00 | 78.00 | 87.00 | 100.00 | 92.00 | 102.00 | 102.00 | 91.00 | 90.00 | 79.00 | 75.00 | 102.00 | |||||||||||||
2004 | 67.00 | 78.00 | 85.00 | 82.00 | 96.00 | 100.00 | 96.00 | 96.00 | 96.00 | 80.00 | 73.00 | a | 70.00 | 100.00 | a | |||||||||||
2005 | 73.00 | a | 71.00 | 81.00 | 80.00 | 94.00 | 97.00 | 102.00 | 95.00 | 95.00 | 88.00 | 83.00 | 73.00 | 102.00 | a | |||||||||||
2006 | 76.00 | 78.00 | 81.00 | 93.00 | 100.00 | 104.00 | 101.00 | 97.00 | 90.00 | 92.00 | 85.00 | 72.00 | 104.00 | |||||||||||||
2007 | 65.00 | 72.00 | 84.00 | 80.00 | 87.00 | 95.00 | 96.00 | 104.00 | 97.00 | 90.00 | 88.00 | 73.00 | 104.00 | |||||||||||||
2008 | 67.00 | 74.00 | 80.00 | 88.00 | 96.00 | 105.00 | 99.00 | 101.00 | 91.00 | 88.00 | b | 81.00 | 72.00 | 105.00 | b | |||||||||||
2009 | 74.00 | a | 77.00 | c | 82.00 | h | 85.00 | d | 93.00 | 97.00 | 102.00 | 98.00 | 94.00 | 95.00 | a | 84.00 | 65.00 | 102.00 | q | |||||||
2010 | 67.00 | 59.00 | 86.00 | 85.00 | 93.00 | 102.00 | 98.00 | 100.00 | 100.00 | 87.00 | a | 80.00 | a | 75.00 | 102.00 | b | ||||||||||
2011 | 73.00 | 77.00 | a | 86.00 | 92.00 | 101.00 | 108.00 | 104.00 | 101.00 | 102.00 | 89.00 | a | 80.00 | 67.00 | 108.00 | b | ||||||||||
2012 | 70.00 | 75.00 | 83.00 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 68.96 | 73.43 | 79.79 | 86.06 | 93.24 | 99.39 | 100.01 | 98.77 | 94.07 | 87.27 | 77.30 | 70.24 | 102.12 | |||||||||||||
S.D. | 5.24 | 5.52 | 4.14 | 4.41 | 4.00 | 4.19 | 3.38 | 3.22 | 3.99 | 3.68 | 4.39 | 4.45 | 3.36 | |||||||||||||
SKEW | -0.26 | -0.46 | 0.27 | -0.15 | -0.27 | -0.01 | -0.14 | -0.12 | 0.02 | 0.06 | -0.23 | -0.18 | -0.46 | |||||||||||||
MAX | 80.00 | 84.00 | 90.00 | 95.00 | 102.00 | 108.00 | 108.00 | 106.00 | 103.00 | 97.00 | 88.00 | 80.00 | 108.00 | |||||||||||||
MIN | 56.00 | 59.00 | 72.00 | 76.00 | 83.00 | 91.00 | 91.00 | 91.00 | 86.00 | 77.00 | 66.00 | 59.00 | 93.00 | |||||||||||||
YRS | 68 | 70 | 68 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 68 | 49 |