YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 111.00 | 95.00 | 75.00 | 68.00 | ----- | z | ||||
1900 | 65.00 | 74.00 | 95.00 | 92.00 | 103.00 | 108.00 | 115.00 | 115.00 | h | 105.00 | 92.00 | 73.00 | 65.00 | j | 115.00 | r | ||||||||||
1901 | 68.00 | 72.00 | 78.00 | 96.00 | a | 101.00 | 110.00 | 112.00 | 111.00 | 111.00 | ----- | 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 | 69.00 | ----- | z | |
1908 | 60.00 | 70.00 | 85.00 | 89.00 | 91.00 | 103.00 | 103.00 | 99.00 | 98.00 | 91.00 | 78.00 | 55.00 | 103.00 | |||||||||||||
1909 | 63.00 | 65.00 | 72.00 | 88.00 | 92.00 | 104.00 | 106.00 | 99.00 | 91.00 | 87.00 | 86.00 | ----- | z | ----- | z | |||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | 77.00 | 86.00 | 94.00 | 103.00 | 107.00 | 106.00 | 104.00 | 88.00 | 73.00 | ----- | z | ----- | z | |||||||||
1912 | 70.00 | a | 75.00 | 91.00 | h | 82.00 | 102.00 | 106.00 | a | 106.00 | 104.00 | b | 97.00 | b | 82.00 | b | 73.00 | 60.00 | 106.00 | p | ||||||
1913 | 61.00 | 68.00 | 87.00 | 90.00 | b | 99.00 | a | 104.00 | 110.00 | a | 101.00 | a | 97.00 | 86.00 | 78.00 | a | 57.00 | 110.00 | f | |||||||
1914 | 64.00 | c | 69.00 | a | 82.00 | d | 93.00 | 100.00 | 108.00 | 106.00 | 104.00 | 96.00 | 85.00 | 77.00 | 64.00 | 108.00 | h | |||||||||
1915 | 60.00 | 72.00 | 83.00 | 87.00 | 97.00 | 102.00 | 103.00 | p | 100.00 | 93.00 | 88.00 | 77.00 | 62.00 | 103.00 | p | |||||||||||
1916 | 59.00 | 70.00 | 83.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.00 | 60.00 | f | ----- | z | ||||
1917 | 57.00 | a | 70.00 | 78.00 | a | 86.00 | a | 90.00 | a | 101.00 | 101.00 | 98.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1918 | ----- | z | 73.00 | l | 78.00 | 81.00 | 86.00 | 104.00 | 100.00 | 98.00 | 95.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.00 | h | ----- | z |
1920 | 62.00 | b | 66.00 | 74.00 | 86.00 | 95.00 | c | 99.00 | 103.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | 92.00 | 104.00 | a | 103.00 | 97.00 | 95.00 | 91.00 | a | 76.00 | 66.00 | ----- | z | ||||||
1922 | 71.00 | 75.00 | a | 77.00 | a | 83.00 | 96.00 | 107.00 | 108.00 | 105.00 | ----- | z | 90.00 | 67.00 | b | ----- | z | ----- | z | |||||||
1923 | 79.00 | 69.00 | 79.00 | 86.00 | ----- | z | ----- | z | 108.00 | 98.00 | ----- | z | ----- | z | ----- | z | 69.00 | c | ----- | z | ||||||
1924 | 62.00 | 70.00 | 71.00 | b | 83.00 | 97.00 | 105.00 | 98.00 | 106.00 | 95.00 | 83.00 | 80.00 | b | 58.00 | 106.00 | d | ||||||||||
1925 | 61.00 | a | 65.00 | 79.00 | a | 86.00 | g | 91.00 | e | 98.00 | 103.00 | a | 90.00 | a | 88.00 | 83.00 | 61.00 | 55.00 | 103.00 | p | ||||||
1926 | 63.00 | a | 70.00 | 77.00 | 85.00 | a | 92.00 | 106.00 | 104.00 | 102.00 | 95.00 | 84.00 | a | 78.00 | 70.00 | 106.00 | c | |||||||||
1927 | 69.00 | 75.00 | 83.00 | 98.00 | 107.00 | h | 111.00 | 112.00 | 105.00 | g | 98.00 | a | 89.00 | a | 76.00 | 65.00 | 112.00 | q | ||||||||
1928 | 67.00 | 70.00 | e | 88.00 | r | 96.00 | 104.00 | e | 108.00 | l | 106.00 | e | 107.00 | e | ----- | z | 83.00 | d | 71.00 | e | 75.00 | l | ----- | z | ||
1929 | 62.00 | a | 70.00 | 78.00 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 102.00 | a | 79.00 | 85.00 | a | ----- | z | ||
1930 | 71.00 | c | 87.00 | a | 90.00 | a | 92.00 | c | 96.00 | 106.00 | a | 106.00 | i | 103.00 | k | 109.00 | 96.00 | 82.00 | 60.00 | ----- | z | |||||
1931 | 62.00 | a | 68.00 | 82.00 | a | 90.00 | 94.00 | a | 98.00 | c | 101.00 | j | 102.00 | h | 101.00 | e | 94.00 | l | 79.00 | a | 55.00 | g | ----- | z | ||
1932 | 49.00 | 68.00 | b | 78.00 | b | 101.00 | h | 91.00 | 102.00 | b | 108.00 | h | 98.00 | i | 97.00 | e | 83.00 | a | 71.00 | g | 58.00 | i | ----- | z | ||
1933 | 52.00 | d | 62.00 | f | 77.00 | f | 84.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | ----- | z | ----- | z | |
1934 | 50.00 | b | ----- | z | ----- | z | ----- | z | 100.00 | 105.00 | c | ----- | 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 | 105.00 | 99.00 | 99.00 | 93.00 | a | 74.00 | 69.00 | ----- | z | |||||
1957 | 63.00 | 74.00 | 77.00 | 83.00 | 93.00 | 106.00 | 104.00 | 103.00 | 99.00 | 91.00 | 65.00 | 63.00 | 106.00 | |||||||||||||
1958 | 62.00 | 74.00 | 71.00 | a | 87.00 | 99.00 | 104.00 | 107.00 | 104.00 | 100.00 | 89.00 | 80.00 | 68.00 | 107.00 | a | |||||||||||
1959 | 67.00 | 69.00 | 79.00 | 96.00 | 99.00 | 106.00 | 108.00 | 101.00 | ----- | z | 86.00 | m | 69.00 | 59.00 | ----- | z | ||||||||||
1960 | 60.00 | 70.00 | 85.00 | 90.00 | 101.00 | 105.00 | 108.00 | 105.00 | q | 89.00 | e | 84.00 | 67.00 | t | 48.00 | m | ----- | z | ||||||||
1961 | 56.00 | e | 67.00 | d | 76.00 | 86.00 | i | 91.00 | c | 104.00 | a | 106.00 | a | 103.00 | c | 94.00 | b | 89.00 | f | 71.00 | j | 63.00 | c | ----- | z | |
1962 | 63.00 | 77.00 | d | 82.00 | b | 96.00 | 96.00 | b | 106.00 | a | 106.00 | 107.00 | e | 101.00 | b | 92.00 | c | 79.00 | 66.00 | f | 107.00 | y | ||||
1963 | 66.00 | b | 75.00 | c | 81.00 | 88.00 | c | 100.00 | 102.00 | b | 107.00 | 105.00 | b | 97.00 | b | 94.00 | b | 74.00 | 62.00 | b | 107.00 | r | ||||
1964 | 67.00 | a | 67.00 | b | 83.00 | 88.00 | 98.00 | b | 104.00 | 105.00 | a | 101.00 | b | 97.00 | b | 92.00 | c | 75.00 | t | 67.00 | ----- | z | ||||
1965 | 69.00 | a | 73.00 | 82.00 | a | 92.00 | b | 94.00 | a | 99.00 | 105.00 | g | 104.00 | b | 95.00 | ----- | z | ----- | z | 62.00 | a | ----- | z | |||
1966 | 59.00 | 64.00 | 85.00 | b | 90.00 | a | 98.00 | 104.00 | b | 105.00 | a | 104.00 | f | 98.00 | c | 85.00 | 78.00 | e | 67.00 | a | 105.00 | u | ||||
1967 | 65.00 | a | 72.00 | d | 81.00 | 82.00 | a | 101.00 | 105.00 | d | 110.00 | a | 106.00 | b | 99.00 | e | 87.00 | 76.00 | c | 60.00 | 110.00 | u | ||||
1968 | 61.00 | a | 76.00 | 85.00 | 87.00 | b | 104.00 | 109.00 | 108.00 | b | 101.00 | c | 103.00 | b | 90.00 | e | 76.00 | 65.00 | c | 109.00 | r | |||||
1969 | 64.00 | a | 65.00 | 86.00 | a | 93.00 | a | 101.00 | f | 109.00 | a | 109.00 | 106.00 | a | 99.00 | 92.00 | d | 75.00 | o | 68.00 | r | ----- | z | |||
1970 | 65.00 | g | 74.00 | 82.00 | 85.00 | a | 99.00 | 111.00 | 106.00 | 103.00 | a | 98.00 | a | 91.00 | b | 76.00 | a | 67.00 | 111.00 | m | ||||||
1971 | 69.00 | 75.00 | 88.00 | a | 90.00 | 95.00 | 106.00 | a | 111.00 | 102.00 | a | 101.00 | 90.00 | a | 74.00 | 66.00 | a | 111.00 | e | |||||||
1972 | 64.00 | 78.00 | a | 90.00 | 89.00 | 98.00 | 107.00 | 109.00 | 104.00 | b | 94.00 | 92.00 | 70.00 | 60.00 | 109.00 | c | ||||||||||
1973 | 58.00 | 70.00 | 68.00 | 87.00 | 96.00 | 107.00 | 107.00 | 105.00 | 100.00 | a | 90.00 | 79.00 | 70.00 | 107.00 | a | |||||||||||
1974 | 58.00 | 73.00 | 83.00 | 87.00 | 102.00 | 109.00 | 107.00 | 105.00 | 102.00 | 92.00 | 67.00 | 59.00 | 109.00 | |||||||||||||
1975 | 73.00 | ----- | z | 75.00 | 83.00 | 98.00 | 105.00 | 108.00 | 108.00 | 102.00 | 92.00 | 79.00 | 63.00 | ----- | z | |||||||||||
1976 | 65.00 | 73.00 | 80.00 | 86.00 | 98.00 | 106.00 | 106.00 | 102.00 | a | 100.00 | 86.00 | b | 75.00 | 61.00 | 106.00 | c | ||||||||||
1977 | 69.00 | 74.00 | 78.00 | 89.00 | 101.00 | 105.00 | 106.00 | 105.00 | 104.00 | 92.00 | 78.00 | 69.00 | 106.00 | |||||||||||||
1978 | 60.00 | 68.00 | 83.00 | 83.00 | 97.00 | 107.00 | 105.00 | 105.00 | 101.00 | 95.00 | 74.00 | a | 60.00 | 107.00 | a | |||||||||||
1979 | 57.00 | 64.00 | 75.00 | a | 85.00 | 94.00 | 104.00 | 105.00 | 106.00 | 100.00 | 92.00 | 67.00 | 63.00 | 106.00 | a | |||||||||||
1980 | 64.00 | 74.00 | 73.00 | 92.00 | 94.00 | b | 104.00 | 107.00 | 108.00 | a | 100.00 | 97.00 | c | 79.00 | b | 70.00 | a | 108.00 | i | |||||||
1981 | 65.00 | 77.00 | 77.00 | a | 95.00 | 95.00 | 112.00 | 110.00 | 110.00 | b | 98.00 | 89.00 | a | 76.00 | 64.00 | 112.00 | d | |||||||||
1982 | 64.00 | 71.00 | a | 73.00 | a | 90.00 | 95.00 | 106.00 | a | 107.00 | 103.00 | a | 102.00 | 82.00 | a | 70.00 | 59.00 | a | 107.00 | f | ||||||
1983 | 67.00 | 74.00 | a | 78.00 | 88.00 | 104.00 | 104.00 | a | 107.00 | 102.00 | c | 102.00 | a | 90.00 | b | 79.00 | b | 67.00 | b | 107.00 | l | |||||
1984 | 63.00 | 71.00 | 80.00 | 85.00 | a | 102.00 | b | 105.00 | b | 106.00 | b | 103.00 | a | 102.00 | b | 88.00 | a | 77.00 | d | 59.00 | a | 106.00 | p | |||
1985 | 62.00 | b | 70.00 | b | 77.00 | b | 92.00 | b | 102.00 | a | 110.00 | 116.00 | b | 109.00 | a | 100.00 | b | 92.00 | 77.00 | b | 60.00 | c | 116.00 | s | ||
1986 | 70.00 | a | 80.00 | a | 85.00 | b | 92.00 | a | 102.00 | b | 110.00 | 111.00 | a | 110.00 | a | 105.00 | b | 92.00 | c | 78.00 | f | 73.00 | b | 111.00 | v | |
1987 | 66.00 | e | 70.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 63.39 | 71.48 | 80.12 | 88.55 | 97.04 | 105.29 | 106.80 | 103.37 | 99.12 | 89.55 | 75.15 | 64.14 | 106.92 | |||||||||||||
S.D. | 5.48 | 4.32 | 5.34 | 4.26 | 4.22 | 3.18 | 3.37 | 3.96 | 4.74 | 4.31 | 4.74 | 5.51 | 2.14 | |||||||||||||
SKEW | -0.15 | 0.78 | 0.22 | 0.29 | -0.27 | -0.19 | 0.22 | -0.67 | 0.25 | 0.16 | -0.79 | 1.14 | 0.74 | |||||||||||||
MAX | 79.00 | 87.00 | 95.00 | 98.00 | 104.00 | 112.00 | 116.00 | 111.00 | 111.00 | 102.00 | 86.00 | 85.00 | 112.00 | |||||||||||||
MIN | 49.00 | 64.00 | 68.00 | 81.00 | 86.00 | 98.00 | 98.00 | 90.00 | 88.00 | 82.00 | 61.00 | 55.00 | 103.00 | |||||||||||||
YRS | 54 | 52 | 51 | 49 | 51 | 52 | 49 | 46 | 49 | 47 | 46 | 43 | 13 |