YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 111.00 | 97.00 | 82.00 | 81.00 | 69.00 | ----- | z | |||||
1933 | 56.00 | 68.00 | 79.00 | 84.00 | 95.00 | 102.00 | 102.00 | 99.00 | 92.00 | a | 89.00 | 77.00 | 78.00 | 102.00 | a | |||||||||||
1934 | 73.00 | 75.00 | 84.00 | 84.00 | 91.00 | 102.00 | 107.00 | 105.00 | 96.00 | 92.00 | 84.00 | 68.00 | 107.00 | |||||||||||||
1935 | 74.00 | 79.00 | 78.00 | 90.00 | 88.00 | 104.00 | 104.00 | 102.00 | 90.00 | 89.00 | 78.00 | 66.00 | a | 104.00 | a | |||||||||||
1936 | 67.00 | 70.00 | 80.00 | 86.00 | 93.00 | 104.00 | 105.00 | 104.00 | 96.00 | 89.00 | 79.00 | 69.00 | 105.00 | |||||||||||||
1937 | 65.00 | 72.00 | a | 73.00 | 91.00 | 96.00 | 102.00 | 103.00 | 104.00 | 94.00 | 92.00 | 79.00 | 70.00 | a | 104.00 | b | ||||||||||
1938 | 70.00 | a | 73.00 | 82.00 | 91.00 | 97.00 | 102.00 | 103.00 | 103.00 | 92.00 | 91.00 | 74.00 | 71.00 | 103.00 | a | |||||||||||
1939 | 69.00 | 69.00 | 82.00 | 91.00 | 95.00 | 106.00 | 101.00 | 99.00 | 100.00 | 88.00 | 83.00 | 75.00 | 106.00 | |||||||||||||
1940 | 71.00 | 80.00 | 82.00 | 88.00 | 97.00 | 105.00 | 106.00 | 103.00 | 98.00 | 92.00 | 81.00 | 74.00 | 106.00 | |||||||||||||
1941 | 68.00 | a | 75.00 | 76.00 | 82.00 | a | 96.00 | 101.00 | 101.00 | 97.00 | 95.00 | 85.00 | 79.00 | 73.00 | g | 101.00 | i | |||||||||
1942 | 75.00 | 74.00 | 80.00 | 87.00 | a | 97.00 | 105.00 | 103.00 | 99.00 | 96.00 | 88.00 | 82.00 | 74.00 | 105.00 | a | |||||||||||
1943 | 72.00 | 80.00 | a | 87.00 | 93.00 | 96.00 | 105.00 | 104.00 | 99.00 | 99.00 | 89.00 | ----- | z | 68.00 | ----- | z | ||||||||||
1944 | 71.00 | 69.00 | 75.00 | 78.00 | 95.00 | 105.00 | 104.00 | 107.00 | 100.00 | 93.00 | 82.00 | 67.00 | 107.00 | |||||||||||||
1945 | 67.00 | 73.00 | 82.00 | 91.00 | 96.00 | 103.00 | 105.00 | 102.00 | 102.00 | 84.00 | 86.00 | 69.00 | q | 105.00 | q | |||||||||||
1946 | 75.00 | a | 76.00 | 82.00 | 89.00 | 93.00 | c | 105.00 | 102.00 | s | 101.00 | 96.00 | 92.00 | ----- | z | 78.00 | ----- | z | ||||||||
1947 | 72.00 | 76.00 | 85.00 | ----- | z | 101.00 | 101.00 | a | 102.00 | a | 103.00 | c | 98.00 | 92.00 | 78.00 | 69.00 | ----- | z | ||||||||
1948 | 70.00 | d | 73.00 | 78.00 | 95.00 | p | 102.00 | 107.00 | 107.00 | i | 103.00 | t | 106.00 | b | 93.00 | ----- | z | ----- | z | ----- | z | |||||
1949 | ----- | z | 74.00 | t | 79.00 | f | 93.00 | a | 100.00 | a | 104.00 | 102.00 | a | 103.00 | a | 101.00 | 88.00 | 80.00 | 73.00 | ----- | z | |||||
1950 | 73.00 | h | 69.00 | d | 86.00 | d | 89.00 | c | 97.00 | e | 105.00 | 103.00 | m | 98.00 | d | 99.00 | 93.00 | 83.00 | 78.00 | ----- | z | |||||
1951 | 72.00 | ----- | z | 79.00 | u | ----- | z | 105.00 | a | 108.00 | 105.00 | 103.00 | 101.00 | a | 94.00 | 79.00 | 72.00 | ----- | z | |||||||
1952 | 72.00 | 72.00 | 76.00 | 84.00 | a | 94.00 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | 76.00 | p | 76.00 | ----- | z | ----- | z | 94.00 | 105.00 | a | 106.00 | 96.00 | 101.00 | 92.00 | 81.00 | a | 75.00 | ----- | z | |||||||
1955 | 64.00 | 74.00 | 81.00 | a | 85.00 | 96.00 | 104.00 | 104.00 | 94.00 | 99.00 | 90.00 | 80.00 | a | 74.00 | a | 104.00 | c | |||||||||
1956 | 72.00 | a | 83.00 | 87.00 | a | 86.00 | 101.00 | 103.00 | 106.00 | 101.00 | 100.00 | 93.00 | 77.00 | 70.00 | 106.00 | b | ||||||||||
1957 | 72.00 | 88.00 | f | 82.00 | k | 88.00 | h | 94.00 | i | 96.00 | j | 108.00 | j | 103.00 | i | 95.00 | i | 88.00 | i | 68.00 | j | 77.00 | j | ----- | z | |
1958 | 77.00 | i | 79.00 | j | 75.00 | j | 92.00 | i | 103.00 | k | 104.00 | i | 109.00 | i | 99.00 | j | 98.00 | k | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | 75.00 | o | 78.00 | g | 80.00 | f | 91.00 | d | 97.00 | g | 105.00 | d | 103.00 | f | 97.00 | i | 98.00 | j | 94.00 | i | 76.00 | f | 69.00 | g | ----- | z |
1960 | 70.00 | f | 75.00 | f | 88.00 | i | 89.00 | f | 98.00 | l | 109.00 | e | 107.00 | f | 104.00 | i | 98.00 | i | 90.00 | f | 84.00 | g | 72.00 | j | ----- | z |
1961 | 67.00 | m | 78.00 | j | 82.00 | j | 89.00 | i | 97.00 | q | 105.00 | i | 104.00 | j | 102.00 | i | 93.00 | f | 88.00 | e | 75.00 | d | 71.00 | g | ----- | z |
1962 | 74.00 | b | 80.00 | e | 86.00 | b | 94.00 | b | 95.00 | f | 105.00 | b | 102.00 | e | 103.00 | e | 97.00 | f | 90.00 | c | 83.00 | c | 72.00 | f | ----- | z |
1963 | 77.00 | d | 80.00 | b | 88.00 | e | 91.00 | f | 96.00 | c | 105.00 | b | 106.00 | a | 92.00 | 95.00 | f | 99.00 | b | 82.00 | g | 70.00 | g | ----- | z | |
1964 | 71.00 | c | 71.00 | c | 85.00 | b | 87.00 | b | 100.00 | e | 102.00 | e | 106.00 | b | 101.00 | a | 95.00 | d | 90.00 | d | 81.00 | h | 75.00 | e | ----- | z |
1965 | 72.00 | d | 77.00 | b | 80.00 | d | 97.00 | d | 94.00 | b | 103.00 | e | 104.00 | e | 100.00 | e | 93.00 | e | 94.00 | e | 81.00 | h | 72.00 | e | ----- | z |
1966 | 69.00 | g | 70.00 | e | 82.00 | d | 87.00 | e | 96.00 | f | 107.00 | e | 105.00 | h | 98.00 | h | 94.00 | f | 88.00 | e | 82.00 | h | 76.00 | f | ----- | z |
1967 | 77.00 | g | 78.00 | e | 85.00 | d | 90.00 | e | 96.00 | f | 102.00 | n | 102.00 | f | 100.00 | e | 93.00 | f | 91.00 | h | 80.00 | f | 66.00 | j | ----- | z |
1968 | 68.00 | f | 78.00 | e | 81.00 | e | 86.00 | d | 98.00 | f | 105.00 | f | 100.00 | g | 92.00 | h | 97.00 | g | 91.00 | e | 79.00 | g | 72.00 | f | ----- | z |
1969 | 77.00 | e | 73.00 | e | 87.00 | e | 92.00 | d | 101.00 | f | 108.00 | f | 106.00 | g | 103.00 | f | 97.00 | f | 92.00 | d | 75.00 | j | 74.00 | g | ----- | z |
1970 | 78.00 | g | 76.00 | e | 78.00 | f | 89.00 | e | 98.00 | g | 105.00 | e | 105.00 | g | 100.00 | e | 97.00 | f | 85.00 | f | 82.00 | g | 77.00 | g | ----- | z |
1971 | 80.00 | g | 78.00 | h | 88.00 | f | 90.00 | d | 92.00 | g | 106.00 | f | 104.00 | e | 98.00 | a | 98.00 | d | 85.00 | e | 81.00 | d | 74.00 | f | ----- | z |
1972 | 73.00 | e | 82.00 | e | 88.00 | b | 92.00 | k | 94.00 | c | 104.00 | c | 105.00 | b | 105.00 | b | 93.00 | e | 95.00 | f | 77.00 | d | 73.00 | d | ----- | z |
1973 | 68.00 | d | 74.00 | f | 73.00 | c | 85.00 | 95.00 | b | 107.00 | a | 105.00 | d | 100.00 | g | 100.00 | c | 91.00 | c | 85.00 | d | 75.00 | c | ----- | z | |
1974 | 76.00 | d | 80.00 | d | 85.00 | b | 91.00 | b | 101.00 | b | 108.00 | c | 103.00 | e | 97.00 | b | 100.00 | c | 87.00 | c | 77.00 | a | 69.00 | f | ----- | z |
1975 | 76.00 | a | 76.00 | e | 80.00 | a | 85.00 | 93.00 | b | 102.00 | 101.00 | c | 100.00 | e | 100.00 | e | 91.00 | e | 82.00 | e | 75.00 | e | ----- | z | ||
1976 | 72.00 | e | ----- | z | 81.00 | e | 87.00 | g | 94.00 | g | 103.00 | d | 102.00 | e | 101.00 | e | 95.00 | d | 84.00 | f | 77.00 | f | 67.00 | g | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 100.00 | f | 97.00 | 95.00 | j | 91.00 | p | 80.00 | l | 74.00 | j | ----- | z | |
1978 | 71.00 | g | 70.00 | g | 83.00 | m | 87.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 71.06 | 75.06 | 81.70 | 88.31 | 96.34 | 104.37 | 103.83 | 100.79 | 97.48 | 90.17 | 80.11 | 72.32 | 104.92 | |||||||||||||
S.D. | 4.30 | 4.11 | 4.18 | 3.91 | 3.57 | 2.03 | 1.73 | 3.70 | 3.52 | 3.27 | 2.97 | 3.50 | 1.56 | |||||||||||||
SKEW | -1.43 | 0.05 | -0.38 | -0.28 | 0.27 | 0.32 | -0.07 | 0.15 | -0.07 | -0.18 | -0.05 | -0.04 | -0.30 | |||||||||||||
MAX | 77.00 | 83.00 | 88.00 | 97.00 | 105.00 | 109.00 | 107.00 | 111.00 | 106.00 | 99.00 | 86.00 | 78.00 | 107.00 | |||||||||||||
MIN | 56.00 | 68.00 | 73.00 | 78.00 | 88.00 | 101.00 | 101.00 | 92.00 | 90.00 | 82.00 | 74.00 | 66.00 | 102.00 | |||||||||||||
YRS | 31 | 33 | 33 | 32 | 29 | 35 | 29 | 34 | 31 | 35 | 27 | 25 | 12 |