| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1914 | ----- | z | ----- | z | ----- | z | 78.00 | h | 90.00 | a | 86.00 | 88.00 | 90.00 | 81.00 | 71.00 | 60.00 | 46.00 | a | ----- | z | ||||||
| 1915 | 51.00 | 58.00 | 75.00 | 71.00 | 78.00 | 89.00 | 92.00 | 95.00 | 78.00 | a | 67.00 | c | 63.00 | 50.00 | 95.00 | d | ||||||||||
| 1916 | 45.00 | a | 59.00 | 56.00 | 69.00 | 76.00 | 88.00 | 86.00 | 94.00 | 81.00 | 70.00 | 51.00 | a | 43.00 | 94.00 | b | ||||||||||
| 1917 | 43.00 | 48.00 | 55.00 | 66.00 | 75.00 | a | 82.00 | 89.00 | 88.00 | 81.00 | 75.00 | 63.00 | d | 52.00 | 89.00 | e | ||||||||||
| 1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.00 | q | 56.00 | x | 57.00 | t | ----- | z |
| 1919 | 54.00 | d | 55.00 | d | 70.00 | b | 72.00 | e | 83.00 | c | 85.00 | o | 96.00 | i | 91.00 | g | 81.00 | t | 73.00 | i | 59.00 | h | 53.00 | b | ----- | z |
| 1920 | 51.00 | h | 57.00 | a | 58.00 | c | 71.00 | c | 80.00 | g | 86.00 | k | 90.00 | b | 90.00 | g | 78.00 | m | ----- | z | 53.00 | c | 51.00 | d | ----- | z |
| 1921 | 48.00 | f | 46.00 | m | 64.00 | 65.00 | 77.00 | h | 82.00 | i | 76.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
| 1922 | 39.00 | i | 43.00 | c | 45.00 | b | 69.00 | c | 69.00 | o | ----- | z | 98.00 | y | 96.00 | e | 74.00 | o | 62.00 | o | 46.00 | i | 45.00 | j | ----- | z |
| 1923 | 43.00 | f | 45.00 | j | 60.00 | l | 70.00 | d | 70.00 | k | 78.00 | n | ----- | z | ----- | z | 69.00 | s | 57.00 | s | 48.00 | j | ----- | z | ----- | z |
| 1924 | 44.00 | m | 48.00 | b | 58.00 | g | 67.00 | n | 78.00 | i | 87.00 | f | 89.00 | t | ----- | z | ----- | z | ----- | z | 47.00 | c | 49.00 | g | ----- | z |
| 1925 | 41.00 | c | 48.00 | p | 50.00 | k | ----- | z | 90.00 | f | 98.00 | k | ----- | z | ----- | z | 84.00 | l | ----- | 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 | 64.00 | 49.00 | g | ----- | z | |
| 1935 | 48.00 | c | 60.00 | 57.00 | a | 71.00 | 80.00 | a | 84.00 | b | 96.00 | b | 91.00 | 88.00 | 81.00 | c | 53.00 | 52.00 | a | 96.00 | m | |||||
| 1936 | 50.00 | 41.00 | c | 56.00 | a | 80.00 | 92.00 | c | 87.00 | c | 85.00 | 90.00 | 80.00 | 79.00 | 59.00 | a | 60.00 | 92.00 | k | |||||||
| 1937 | 35.00 | c | 53.00 | 62.00 | 65.00 | 88.00 | b | 92.00 | 86.00 | b | 87.00 | 93.00 | 76.00 | a | 61.00 | a | 50.00 | a | 93.00 | j | ||||||
| 1938 | 54.00 | b | 69.00 | 60.00 | a | 76.00 | 86.00 | 86.00 | b | 101.00 | a | 92.00 | a | 94.00 | a | 75.00 | f | 51.00 | b | 53.00 | b | 101.00 | r | |||
| 1939 | 49.00 | b | 51.00 | g | 71.00 | b | 79.00 | f | 88.00 | e | 83.00 | e | 90.00 | 94.00 | a | 80.00 | b | 75.00 | b | 64.00 | c | 66.00 | a | ----- | z | |
| 1940 | 59.00 | 55.00 | b | 67.00 | 80.00 | d | 89.00 | 90.00 | 92.00 | o | 96.00 | 91.00 | d | 78.00 | 57.00 | 60.00 | 96.00 | y | ||||||||
| 1941 | 58.00 | 63.00 | 78.00 | 83.00 | 86.00 | 93.00 | o | 104.00 | k | ----- | z | ----- | z | 89.00 | w | ----- | z | ----- | z | ----- | z | |||||
| 1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 97.00 | a | 87.00 | a | 75.00 | c | 64.00 | a | 51.00 | ----- | z | |
| 1943 | 52.00 | 63.00 | a | 57.00 | 79.00 | 74.00 | 81.00 | 84.00 | e | 83.00 | 82.00 | 75.00 | v | ----- | z | 62.00 | e | ----- | z | |||||||
| 1944 | 56.00 | b | 47.00 | b | 58.00 | 78.00 | 86.00 | b | 88.00 | e | 95.00 | e | 89.00 | 87.00 | 67.00 | 57.00 | c | 51.00 | f | 95.00 | y | |||||
| 1945 | 50.00 | c | 51.00 | 59.00 | d | 66.00 | c | 86.00 | b | 83.00 | b | 91.00 | h | 97.00 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.00 | i | 54.00 | k | ----- | z | ----- | z |
| 1947 | ----- | z | 54.00 | p | 70.00 | j | 79.00 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.00 | g | ----- | z | 48.00 | n | ----- | z |
| 1948 | 46.00 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1949 | ----- | z | ----- | z | ----- | z | 74.00 | v | 81.00 | q | 86.00 | g | 86.00 | g | 82.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1950 | 39.00 | a | 46.00 | 51.00 | b | 73.00 | 79.00 | a | 85.00 | e | 86.00 | a | 86.00 | 83.00 | f | 60.00 | o | 62.00 | j | 58.00 | l | ----- | z | |||
| 1951 | 40.00 | d | 49.00 | e | 61.00 | 78.00 | 77.00 | a | 82.00 | e | 94.00 | 89.00 | 87.00 | b | 68.00 | q | 58.00 | n | 48.00 | j | ----- | z | ||||
| 1952 | 49.00 | e | 58.00 | i | 58.00 | l | 75.00 | d | 82.00 | a | 79.00 | h | 90.00 | 93.00 | a | ----- | z | 71.00 | g | 52.00 | s | 51.00 | m | ----- | z | |
| 1953 | 49.00 | g | 52.00 | 64.00 | 67.00 | a | 87.00 | a | 72.00 | a | 90.00 | c | 89.00 | 76.00 | d | 65.00 | f | 62.00 | e | 48.00 | a | ----- | z | |||
| 1954 | 46.00 | a | 48.00 | a | 58.00 | 69.00 | 81.00 | c | 83.00 | 84.00 | 78.00 | 74.00 | 65.00 | 60.00 | b | 52.00 | 84.00 | g | ||||||||
| 1955 | 45.00 | 45.00 | 57.00 | 69.00 | 69.00 | 94.00 | 84.00 | a | 87.00 | a | 90.00 | b | ----- | z | 52.00 | l | 46.00 | c | ----- | z | ||||||
| 1956 | 49.00 | a | 43.00 | 52.00 | 80.00 | 91.00 | g | 75.00 | i | 97.00 | a | 91.00 | c | 83.00 | h | 67.00 | k | 55.00 | j | 44.00 | s | ----- | z | |||
| 1957 | ----- | z | 48.00 | l | 60.00 | 84.00 | 85.00 | a | 81.00 | o | 81.00 | b | 79.00 | 84.00 | b | 68.00 | b | 54.00 | 52.00 | ----- | z | |||||
| 1958 | 50.00 | 58.00 | a | 62.00 | 74.00 | c | 94.00 | 94.00 | b | 101.00 | d | 94.00 | 84.00 | 71.00 | 56.00 | b | 54.00 | f | 101.00 | r | ||||||
| 1959 | 49.00 | 52.00 | c | 59.00 | a | 75.00 | 89.00 | b | 85.00 | a | 95.00 | 93.00 | a | 78.00 | a | 66.00 | d | 55.00 | c | 54.00 | d | 95.00 | t | |||
| 1960 | 48.00 | a | 54.00 | b | 74.00 | 74.00 | b | 79.00 | d | 81.00 | 95.00 | 98.00 | a | 81.00 | a | 70.00 | d | 49.00 | a | 60.00 | b | 98.00 | r | |||
| 1961 | 64.00 | h | 55.00 | f | 61.00 | ----- | z | 83.00 | f | 92.00 | 98.00 | 95.00 | a | 80.00 | b | 69.00 | 52.00 | 46.00 | a | ----- | z | |||||
| 1962 | 50.00 | b | 55.00 | b | 67.00 | c | 81.00 | 67.00 | d | 84.00 | 89.00 | 84.00 | 81.00 | 72.00 | a | 62.00 | b | 56.00 | 89.00 | n | ||||||
| 1963 | 45.00 | 52.00 | b | 64.00 | c | 64.00 | 91.00 | b | 91.00 | a | 81.00 | 89.00 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
| 1964 | ----- | z | ----- | z | 70.00 | x | ----- | z | ----- | z | 80.00 | 87.00 | 87.00 | a | 76.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ||
| 1965 | ----- | z | ----- | z | 72.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.00 | c | 71.00 | k | 60.00 | k | ----- | z | ----- | z | |
| 1966 | ----- | z | ----- | z | 68.00 | 75.00 | d | 90.00 | c | 87.00 | 83.00 | a | 94.00 | 86.00 | 75.00 | 57.00 | 50.00 | ----- | z | |||||||
| 1967 | 47.00 | 56.00 | 58.00 | 64.00 | 81.00 | 91.00 | 88.00 | 98.00 | a | 90.00 | 68.00 | e | 65.00 | f | 53.00 | l | 98.00 | x | ||||||||
| 1968 | 57.00 | h | 69.00 | 66.00 | c | 76.00 | 78.00 | b | 83.00 | 92.00 | 90.00 | 80.00 | b | ----- | z | ----- | z | ----- | z | ----- | z | |||||
| 1969 | 37.00 | 52.00 | 70.00 | c | ----- | z | 90.00 | i | 91.00 | c | 85.00 | b | 84.00 | 84.00 | b | 74.00 | a | 62.00 | g | 50.00 | c | ----- | z | |||
| 1970 | 40.00 | f | 60.00 | c | 58.00 | 63.00 | 79.00 | a | 92.00 | b | 94.00 | 88.00 | 81.00 | b | 79.00 | 64.00 | 44.00 | k | 94.00 | y | ||||||
| 1971 | 45.00 | f | 49.00 | b | 57.00 | c | 77.00 | 85.00 | b | 81.00 | a | 96.00 | 92.00 | 76.00 | a | 73.00 | f | 56.00 | 49.00 | 96.00 | u | |||||
| 1972 | 46.00 | 56.00 | d | 62.00 | 71.00 | c | 82.00 | m | 85.00 | a | 88.00 | a | 90.00 | b | 88.00 | h | 71.00 | s | 55.00 | g | 47.00 | ----- | z | |||
| 1973 | 56.00 | 60.00 | 63.00 | ----- | z | ----- | z | 88.00 | 90.00 | h | 89.00 | 89.00 | a | 63.00 | 52.00 | 52.00 | ----- | z | ||||||||
| 1974 | 50.00 | a | 50.00 | a | 57.00 | 68.00 | c | 72.00 | b | 84.00 | g | 88.00 | p | 94.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
| 1975 | 42.00 | g | 54.00 | 58.00 | a | 65.00 | q | ----- | z | 80.00 | p | 91.00 | a | 85.00 | 85.00 | a | 78.00 | 70.00 | a | 48.00 | b | ----- | z | |||
| 1976 | 54.00 | a | 54.00 | 54.00 | 72.00 | 82.00 | 78.00 | 83.00 | a | 79.00 | 80.00 | a | 73.00 | 61.00 | 56.00 | 83.00 | c | |||||||||
| 1977 | 47.00 | 59.00 | 57.00 | 83.00 | e | 72.00 | a | 88.00 | 86.00 | c | 96.00 | a | 76.00 | a | 66.00 | 59.00 | 48.00 | 96.00 | k | |||||||
| 1978 | 43.00 | a | 56.00 | a | 66.00 | 74.00 | 80.00 | 87.00 | 94.00 | a | 100.00 | 73.00 | ----- | z | ----- | z | 44.00 | r | ----- | z | ||||||
| 1979 | ----- | z | 48.00 | o | 68.00 | f | 76.00 | e | 82.00 | k | 84.00 | a | 92.00 | d | 84.00 | 86.00 | g | 78.00 | o | 54.00 | h | 49.00 | p | ----- | z | |
| 1980 | 47.00 | g | 55.00 | h | 54.00 | d | 79.00 | k | 83.00 | i | 73.00 | n | ----- | z | ----- | z | ----- | z | 88.00 | f | 67.00 | h | 63.00 | h | ----- | z |
| 1981 | 56.00 | h | 55.00 | c | 68.00 | b | 76.00 | e | 74.00 | c | 81.00 | a | 86.00 | f | 97.00 | d | 88.00 | 67.00 | a | 65.00 | 57.00 | ----- | z | |||
| 1982 | 44.00 | 49.00 | 67.00 | 79.00 | 80.00 | 92.00 | 93.00 | 90.00 | 84.00 | 75.00 | 58.00 | 52.00 | a | 93.00 | a | |||||||||||
| 1983 | 52.00 | g | 60.00 | d | 63.00 | g | 70.00 | k | 98.00 | l | 76.00 | f | 89.00 | b | ----- | 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 |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 47.97 | 53.88 | 61.55 | 73.21 | 81.84 | 85.90 | 89.95 | 90.31 | 82.68 | 71.89 | 58.09 | 52.25 | 91.25 | |||||||||||||
| S.D. | 5.67 | 6.42 | 6.75 | 5.69 | 6.65 | 4.78 | 5.19 | 5.25 | 5.39 | 4.89 | 5.40 | 5.20 | 5.56 | |||||||||||||
| SKEW | -0.21 | 0.23 | 0.31 | 0.01 | -0.25 | -0.38 | 0.25 | -0.45 | 0.24 | 0.07 | -0.08 | 0.74 | -1.08 | |||||||||||||
| MAX | 59.00 | 69.00 | 78.00 | 84.00 | 94.00 | 94.00 | 101.00 | 100.00 | 94.00 | 81.00 | 70.00 | 66.00 | 95.00 | |||||||||||||
| MIN | 35.00 | 41.00 | 45.00 | 63.00 | 67.00 | 72.00 | 81.00 | 78.00 | 73.00 | 63.00 | 47.00 | 43.00 | 83.00 | |||||||||||||
| YRS | 35 | 42 | 47 | 43 | 38 | 39 | 41 | 45 | 38 | 28 | 32 | 32 | 4 | |||||||||||||