YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 71.00 | b | 74.00 | a | 79.00 | 80.00 | 93.00 | 105.00 | 104.00 | 100.00 | 101.00 | 94.00 | 78.00 | 75.00 | 105.00 | c | ||||||||||
1956 | 75.00 | 72.00 | b | 91.00 | 86.00 | a | 95.00 | 104.00 | 105.00 | 102.00 | 100.00 | 86.00 | 80.00 | a | 80.00 | 105.00 | d | |||||||||
1957 | 63.00 | 82.00 | 77.00 | a | 80.00 | 92.00 | 105.00 | 106.00 | 104.00 | 100.00 | 97.00 | 75.00 | 74.00 | 106.00 | a | |||||||||||
1958 | 70.00 | 74.00 | 70.00 | 88.00 | 100.00 | 101.00 | 107.00 | a | 102.00 | 99.00 | 90.00 | 79.00 | 78.00 | 107.00 | a | |||||||||||
1959 | 75.00 | 70.00 | a | 77.00 | 89.00 | 93.00 | a | 105.00 | 105.00 | 97.00 | 97.00 | 93.00 | 78.00 | 79.00 | 105.00 | b | ||||||||||
1960 | 67.00 | 66.00 | a | 82.00 | 86.00 | 99.00 | 103.00 | 106.00 | 104.00 | 98.00 | 90.00 | 81.00 | 78.00 | 106.00 | a | |||||||||||
1961 | 74.00 | a | 73.00 | 79.00 | 89.00 | 90.00 | 106.00 | 105.00 | b | 105.00 | 92.00 | 89.00 | 74.00 | 69.00 | 106.00 | c | ||||||||||
1962 | 71.00 | 75.00 | 80.00 | 91.00 | a | 90.00 | 103.00 | 100.00 | 105.00 | 101.00 | c | 89.00 | d | 83.00 | e | 76.00 | i | 105.00 | v | |||||||
1963 | 68.00 | a | 85.00 | c | 78.00 | g | 84.00 | o | 96.00 | 99.00 | a | 107.00 | 101.00 | b | 98.00 | b | 99.00 | c | 82.00 | b | 80.00 | b | ----- | z | ||
1964 | 76.00 | c | 71.00 | d | 82.00 | f | 87.00 | b | 94.00 | e | 102.00 | h | 104.00 | c | 103.00 | c | 97.00 | f | 89.00 | d | 82.00 | a | 72.00 | b | ----- | z |
1965 | 76.00 | d | 76.00 | b | 74.00 | d | 88.00 | b | 92.00 | 98.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | 68.00 | x | 78.00 | ----- | z | ||
1966 | 75.00 | b | 67.00 | a | 85.00 | a | 88.00 | 96.00 | d | 104.00 | a | 105.00 | a | 107.00 | c | 100.00 | f | 88.00 | g | 85.00 | a | 74.00 | a | ----- | z | |
1967 | 73.00 | b | 75.00 | 80.00 | a | 78.00 | a | 100.00 | 101.00 | 104.00 | a | 102.00 | 95.00 | 90.00 | d | 86.00 | 65.00 | 104.00 | i | |||||||
1968 | 72.00 | 77.00 | 81.00 | 84.00 | 99.00 | a | 111.00 | a | 105.00 | 100.00 | a | 103.00 | b | 88.00 | 79.00 | a | 73.00 | 111.00 | f | |||||||
1969 | 75.00 | a | 70.00 | 84.00 | a | 87.00 | 100.00 | 104.00 | a | 106.00 | 106.00 | 101.00 | e | 94.00 | 78.00 | a | 76.00 | b | 106.00 | k | ||||||
1970 | 75.00 | 76.00 | 75.00 | b | 81.00 | 98.00 | b | 111.00 | a | 106.00 | b | 106.00 | a | 100.00 | c | 84.00 | 80.00 | a | 72.00 | a | 111.00 | m | ||||
1971 | 82.00 | a | 79.00 | a | 87.00 | 90.00 | a | 89.00 | 104.00 | b | 107.00 | c | 98.00 | 111.00 | b | 90.00 | h | 80.00 | 67.00 | c | 111.00 | u | ||||
1972 | 68.00 | a | 79.00 | a | 87.00 | a | 87.00 | c | 94.00 | 109.00 | 109.00 | 108.00 | g | 96.00 | a | 94.00 | 73.00 | 72.00 | b | 109.00 | p | |||||
1973 | 71.00 | c | 70.00 | a | 69.00 | 85.00 | a | 95.00 | a | 109.00 | 109.00 | 105.00 | 100.00 | f | 92.00 | 84.00 | b | 73.00 | a | 109.00 | o | |||||
1974 | 75.00 | 77.00 | 80.00 | b | 85.00 | a | 103.00 | 109.00 | 105.00 | 104.00 | b | 101.00 | a | 93.00 | 80.00 | b | 67.00 | a | 109.00 | i | ||||||
1975 | 75.00 | 77.00 | 78.00 | 79.00 | 93.00 | a | 101.00 | a | 105.00 | a | 105.00 | 99.00 | 94.00 | 87.00 | b | 78.00 | 105.00 | e | ||||||||
1976 | 77.00 | 74.00 | 78.00 | 86.00 | 95.00 | 107.00 | 107.00 | 103.00 | c | 99.00 | 89.00 | 84.00 | 70.00 | 107.00 | c | |||||||||||
1977 | 71.00 | a | 80.00 | 79.00 | 89.00 | 99.00 | 106.00 | 108.00 | 105.00 | 104.00 | 90.00 | b | 82.00 | 74.00 | 108.00 | c | ||||||||||
1978 | 69.00 | 72.00 | 80.00 | 80.00 | a | 96.00 | 103.00 | 106.00 | a | 100.00 | 99.00 | a | 95.00 | 80.00 | 69.00 | 106.00 | c | |||||||||
1979 | 60.00 | 74.00 | 74.00 | 84.00 | 94.00 | 106.00 | 105.00 | 103.00 | 102.00 | b | 96.00 | 75.00 | 80.00 | 106.00 | b | |||||||||||
1980 | 66.00 | 76.00 | 70.00 | 90.00 | 92.00 | 107.00 | 106.00 | 106.00 | 100.00 | a | 101.00 | 88.00 | 80.00 | 107.00 | a | |||||||||||
1981 | 74.00 | 81.00 | 76.00 | 95.00 | 92.00 | 107.00 | 108.00 | 110.00 | 97.00 | 85.00 | 80.00 | 77.00 | 110.00 | |||||||||||||
1982 | 76.00 | d | 75.00 | b | 75.00 | c | 85.00 | c | 94.00 | a | 100.00 | a | 104.00 | c | 103.00 | 105.00 | b | 87.00 | 78.00 | a | 70.00 | c | 105.00 | w | ||
1983 | 73.00 | 73.00 | a | 75.00 | a | 78.00 | f | 101.00 | a | 99.00 | 107.00 | 102.00 | b | 100.00 | c | 84.00 | 81.00 | a | 68.00 | b | 107.00 | q | ||||
1984 | 73.00 | a | 75.00 | a | 80.00 | 92.00 | d | 104.00 | 104.00 | b | 108.00 | b | 105.00 | a | 100.00 | 87.00 | a | 83.00 | b | 70.00 | b | 108.00 | p | |||
1985 | 67.00 | b | 77.00 | a | 76.00 | e | 90.00 | 93.00 | 104.00 | a | 108.00 | 107.00 | 94.00 | 91.00 | 80.00 | 74.00 | a | 108.00 | j | |||||||
1986 | 75.00 | 84.00 | 84.00 | 87.00 | 96.00 | 105.00 | b | 105.00 | a | 103.00 | a | 100.00 | b | 84.00 | a | 78.00 | 71.00 | a | 105.00 | h | ||||||
1987 | 76.00 | 73.00 | a | 75.00 | b | 97.00 | b | 90.00 | a | 102.00 | o | 103.00 | a | ----- | z | ----- | z | 95.00 | 75.00 | 73.00 | ----- | z | ||||
1988 | 73.00 | 75.00 | a | 87.00 | 87.00 | b | 93.00 | c | 105.00 | b | 104.00 | b | 98.00 | f | 93.00 | 93.00 | 85.00 | 73.00 | 105.00 | p | ||||||
1989 | 71.00 | b | 80.00 | a | 84.00 | a | 92.00 | 99.00 | d | 101.00 | 103.00 | b | 104.00 | 98.00 | 91.00 | 83.00 | 77.00 | 104.00 | j | |||||||
1990 | 79.00 | a | 76.00 | c | 82.00 | b | 87.00 | c | 90.00 | a | 110.00 | a | 104.00 | a | 101.00 | 100.00 | 88.00 | b | 81.00 | 73.00 | 110.00 | n | ||||
1991 | 69.00 | 75.00 | a | 72.00 | d | 84.00 | b | 90.00 | c | 97.00 | a | 104.00 | 102.00 | c | 97.00 | b | 97.00 | 84.00 | a | 69.00 | 104.00 | q | ||||
1992 | 75.00 | 72.00 | 69.00 | 91.00 | 88.00 | a | 92.00 | 96.00 | b | 97.00 | 91.00 | 88.00 | 73.00 | 64.00 | a | 97.00 | d | |||||||||
1993 | 66.00 | a | 65.00 | b | 76.00 | 85.00 | a | 91.00 | a | 101.00 | 102.00 | b | 105.00 | h | 99.00 | a | 94.00 | a | 77.00 | 73.00 | 105.00 | q | ||||
1994 | 75.00 | 72.00 | a | 79.00 | a | 92.00 | a | 97.00 | b | 112.00 | a | 104.00 | a | 110.00 | 99.00 | a | 86.00 | b | 77.00 | 73.00 | a | 112.00 | k | |||
1995 | 73.00 | b | 79.00 | 76.00 | b | 81.00 | 92.00 | b | 101.00 | b | 113.00 | 106.00 | b | 102.00 | 92.00 | 83.00 | 76.00 | 113.00 | j | |||||||
1996 | 77.00 | 82.00 | c | 80.00 | b | 94.00 | a | 101.00 | 103.00 | b | 107.00 | d | 104.00 | h | 90.00 | m | 96.00 | 84.00 | a | 75.00 | a | ----- | z | |||
1997 | 71.00 | b | 75.00 | 85.00 | a | 87.00 | c | 98.00 | a | 101.00 | a | 107.00 | 102.00 | b | 98.00 | 92.00 | c | 83.00 | e | 77.00 | p | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 72.40 | 75.12 | 78.71 | 86.90 | 95.02 | 103.98 | 105.45 | 103.38 | 99.16 | 91.15 | 80.43 | 73.39 | 105.79 | |||||||||||||
S.D. | 4.27 | 4.42 | 5.19 | 4.39 | 4.01 | 4.12 | 2.65 | 3.01 | 3.64 | 4.20 | 3.71 | 4.22 | 2.86 | |||||||||||||
SKEW | -0.65 | 0.00 | 0.12 | -0.04 | 0.33 | -0.31 | -0.65 | -0.06 | 0.40 | 0.15 | -0.18 | -0.21 | -2.01 | |||||||||||||
MAX | 82.00 | 85.00 | 91.00 | 97.00 | 104.00 | 112.00 | 113.00 | 110.00 | 111.00 | 101.00 | 88.00 | 80.00 | 110.00 | |||||||||||||
MIN | 60.00 | 65.00 | 69.00 | 78.00 | 88.00 | 92.00 | 96.00 | 97.00 | 91.00 | 84.00 | 73.00 | 64.00 | 97.00 | |||||||||||||
YRS | 43 | 43 | 41 | 41 | 43 | 41 | 42 | 37 | 37 | 40 | 42 | 41 | 14 |