YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.00 | l | ----- | z |
1928 | 81.00 | 78.00 | 84.00 | 84.00 | c | 96.00 | 92.00 | 101.00 | 100.00 | 104.00 | 94.00 | 84.00 | 86.00 | 104.00 | c | |||||||||||
1929 | 78.00 | 76.00 | 83.00 | 80.00 | 95.00 | a | 102.00 | 98.00 | 103.00 | 102.00 | 96.00 | 88.00 | 86.00 | 103.00 | a | |||||||||||
1930 | 78.00 | b | 86.00 | 88.00 | 91.00 | 89.00 | 94.00 | 104.00 | 100.00 | 100.00 | 94.00 | 90.00 | 76.00 | 104.00 | b | |||||||||||
1931 | 78.00 | 74.00 | 93.00 | 95.00 | 90.00 | 98.00 | 102.00 | 106.00 | 100.00 | 92.00 | 92.00 | a | 72.00 | 106.00 | a | |||||||||||
1932 | 72.00 | b | 82.00 | a | 86.00 | a | 94.00 | 94.00 | 102.00 | 97.00 | 102.00 | 103.00 | 98.00 | 87.00 | ----- | z | ----- | z | ||||||||
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 81.00 | 84.00 | 85.00 | 101.00 | a | 108.00 | a | 97.00 | 100.00 | 100.00 | 102.00 | a | 92.00 | 77.00 | a | ----- | z | |||||||
1975 | 90.00 | 83.00 | 84.00 | a | 77.00 | 89.00 | 94.00 | 99.00 | 101.00 | 101.00 | d | 99.00 | a | 92.00 | 87.00 | 101.00 | f | |||||||||
1976 | 89.00 | 84.00 | a | 84.00 | 85.00 | 98.00 | a | 106.00 | 101.00 | 105.00 | b | 97.00 | 94.00 | 93.00 | 80.00 | 106.00 | d | |||||||||
1977 | 79.00 | 87.00 | a | 81.00 | 90.00 | 89.00 | 93.00 | 102.00 | 100.00 | 101.00 | 96.00 | a | 93.00 | 85.00 | 102.00 | b | ||||||||||
1978 | 79.00 | 80.00 | 88.00 | a | 79.00 | 99.00 | 100.00 | a | 105.00 | 98.00 | 104.00 | 103.00 | 91.00 | 78.00 | 105.00 | b | ||||||||||
1979 | 70.00 | 79.00 | 82.00 | 83.00 | 97.00 | 106.00 | 100.00 | 97.00 | 108.00 | a | 95.00 | 83.00 | 94.00 | b | 108.00 | c | ||||||||||
1980 | 78.00 | a | 86.00 | i | ----- | z | 87.00 | d | 82.00 | d | 100.00 | d | 104.00 | c | 101.00 | a | 107.00 | 105.00 | 94.00 | 86.00 | a | ----- | z | |||
1981 | 80.00 | a | 89.00 | 77.00 | a | 90.00 | 93.00 | b | 108.00 | 96.00 | d | 105.00 | c | 105.00 | a | 93.00 | d | 90.00 | c | 86.00 | 108.00 | s | ||||
1982 | 80.00 | d | 83.00 | b | 77.00 | d | 84.00 | d | 87.00 | e | 88.00 | e | 103.00 | b | 102.00 | b | 109.00 | a | 94.00 | e | 85.00 | b | 80.00 | ----- | z | |
1983 | 84.00 | b | 82.00 | c | 80.00 | d | 84.00 | c | 90.00 | c | 94.00 | c | 103.00 | b | 105.00 | b | 106.00 | d | 94.00 | b | ----- | z | 82.00 | a | ----- | z |
1984 | 83.00 | ----- | z | 83.00 | b | ----- | z | 107.00 | e | 96.00 | f | 100.00 | a | 98.00 | ----- | z | 93.00 | g | 81.00 | d | 71.00 | c | ----- | z | ||
1985 | 73.00 | c | 83.00 | a | 82.00 | f | 94.00 | g | 86.00 | e | 101.00 | c | 105.00 | f | 107.00 | a | 94.00 | e | 95.00 | f | 85.00 | b | 82.00 | d | ----- | z |
1986 | 84.00 | b | 88.00 | f | 87.00 | e | 88.00 | a | 92.00 | f | 97.00 | c | 96.00 | a | 99.00 | c | 96.00 | c | 88.00 | f | 83.00 | d | 78.00 | c | ----- | z |
1987 | 83.00 | f | 78.00 | d | 83.00 | d | 90.00 | f | 90.00 | c | 92.00 | g | 98.00 | c | 97.00 | d | 102.00 | d | 100.00 | g | 79.00 | c | 79.00 | b | ----- | z |
1988 | 80.00 | f | 83.00 | e | 94.00 | e | 89.00 | f | 94.00 | c | 90.00 | f | 96.00 | e | 95.00 | 104.00 | e | 95.00 | e | 87.00 | e | 82.00 | b | ----- | z | |
1989 | 76.00 | d | 83.00 | g | 84.00 | f | 98.00 | e | 87.00 | c | 102.00 | h | 105.00 | c | 92.00 | 101.00 | g | 92.00 | e | 87.00 | b | 83.00 | c | ----- | z | |
1990 | 84.00 | c | 83.00 | d | 85.00 | c | 85.00 | e | 96.00 | g | 105.00 | d | 97.00 | e | 96.00 | f | 103.00 | d | 95.00 | d | 86.00 | d | 81.00 | c | ----- | z |
1991 | 77.00 | e | 84.00 | c | 76.00 | e | 85.00 | b | 88.00 | g | 86.00 | d | 93.00 | c | ----- | z | 100.00 | b | ----- | z | 88.00 | b | 73.00 | d | ----- | z |
1992 | 80.00 | d | 81.00 | b | 71.00 | c | 90.00 | d | 85.00 | f | 94.00 | d | ----- | z | ----- | z | 101.00 | a | 100.00 | d | 84.00 | c | 75.00 | c | ----- | z |
1993 | 77.00 | e | 75.00 | c | 81.00 | e | 85.00 | g | 89.00 | g | 93.00 | b | 98.00 | 96.00 | c | ----- | z | ----- | z | 86.00 | a | 79.00 | c | ----- | z | |
1994 | 82.00 | d | 74.00 | b | ----- | z | 85.00 | f | 91.00 | e | 107.00 | c | 97.00 | a | 105.00 | c | 98.00 | b | 92.00 | a | 80.00 | 80.00 | a | ----- | z | |
1995 | 79.00 | 88.00 | a | 79.00 | 83.00 | a | 85.00 | d | 93.00 | 106.00 | b | 102.00 | a | 102.00 | c | 97.00 | b | 91.00 | b | 82.00 | c | 106.00 | s | |||
1996 | 83.00 | a | 85.00 | 85.00 | g | 93.00 | f | 95.00 | f | 103.00 | d | 103.00 | a | 103.00 | ----- | z | 101.00 | f | 92.00 | d | 76.00 | c | ----- | z | ||
1997 | 76.00 | b | 79.00 | e | 92.00 | f | 87.00 | c | 97.00 | b | 89.00 | 98.00 | c | 107.00 | d | 98.00 | c | 96.00 | e | ----- | z | 80.00 | c | ----- | z | |
1998 | 75.00 | e | 68.00 | b | 80.00 | f | 90.00 | g | 79.00 | f | 91.00 | f | ----- | z | 108.00 | b | 101.00 | e | ----- | z | ----- | z | 82.00 | a | ----- | z |
1999 | 83.00 | c | 79.00 | b | 82.00 | d | 91.00 | 85.00 | c | 97.00 | c | 99.00 | c | 100.00 | b | 101.00 | f | 99.00 | b | 91.00 | a | 93.00 | c | ----- | z | |
2000 | 85.00 | b | 83.00 | b | 82.00 | d | 90.00 | 96.00 | d | 93.00 | f | 103.00 | b | 103.00 | b | 102.00 | b | 87.00 | c | 85.00 | b | 81.00 | a | ----- | z | |
2001 | 82.00 | b | 86.00 | c | 87.00 | b | 89.00 | 97.00 | a | 95.00 | e | 95.00 | 99.00 | a | 101.00 | c | 95.00 | d | 86.00 | f | 80.00 | ----- | z | |||
2002 | 83.00 | 90.00 | d | 82.00 | c | 81.00 | t | ----- | z | ----- | z | ----- | z | 105.00 | c | 108.00 | 93.00 | 90.00 | a | 76.00 | a | ----- | z | |||
2003 | 90.00 | d | 73.00 | c | 85.00 | 84.00 | c | 98.00 | g | 98.00 | 99.00 | a | 101.00 | a | 103.00 | c | 101.00 | f | 86.00 | a | 82.00 | d | ----- | z | ||
2004 | 81.00 | e | 81.00 | a | 92.00 | e | 98.00 | c | 98.00 | c | 91.00 | d | 98.00 | 102.00 | 102.00 | g | 95.00 | f | 74.00 | 84.00 | ----- | z | ||||
2005 | 80.00 | f | 72.00 | g | 81.00 | g | 88.00 | e | 94.00 | e | 94.00 | d | 101.00 | i | 105.00 | b | 103.00 | a | 96.00 | c | 88.00 | h | 89.00 | a | ----- | z |
2006 | 86.00 | a | 86.00 | a | 78.00 | b | 85.00 | b | 91.00 | f | 101.00 | e | 111.00 | e | 101.00 | c | 102.00 | e | 92.00 | b | 94.00 | d | 83.00 | b | ----- | z |
2007 | 83.00 | a | 88.00 | f | 90.00 | b | 82.00 | o | 92.00 | i | 95.00 | b | 101.00 | a | 102.00 | a | 106.00 | e | 95.00 | e | 90.00 | 85.00 | ----- | z | ||
2008 | 75.00 | a | 80.00 | a | 85.00 | 94.00 | c | 97.00 | c | 106.00 | b | 98.00 | 99.00 | 99.00 | p | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 80.36 | 81.26 | 83.53 | 87.43 | 92.86 | 97.88 | 100.09 | 101.38 | 102.15 | 95.62 | 87.44 | 81.34 | 104.75 | |||||||||||||
S.D. | 4.70 | 4.88 | 5.00 | 5.16 | 5.62 | 6.10 | 3.72 | 3.59 | 3.45 | 3.73 | 4.71 | 5.11 | 1.91 | |||||||||||||
SKEW | 0.07 | -0.55 | -0.04 | 0.25 | 0.20 | 0.08 | 0.64 | -0.30 | -0.08 | 0.54 | -0.74 | 0.28 | 0.25 | |||||||||||||
MAX | 90.00 | 90.00 | 94.00 | 98.00 | 107.00 | 108.00 | 111.00 | 108.00 | 109.00 | 105.00 | 94.00 | 94.00 | 108.00 | |||||||||||||
MIN | 70.00 | 68.00 | 71.00 | 77.00 | 82.00 | 86.00 | 93.00 | 92.00 | 94.00 | 87.00 | 74.00 | 71.00 | 102.00 | |||||||||||||
YRS | 36 | 34 | 32 | 30 | 29 | 33 | 35 | 37 | 33 | 29 | 34 | 38 | 8 |