| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.00 | a | 41.00 | ----- | z | 35.00 | f | ----- | z | ----- | z | ----- | z | 33.00 | ||
| 1923 | ----- | z | ----- | z | ----- | z | 29.00 | a | 37.00 | 36.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.00 | |||
| 1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.00 | a | 40.00 | 43.00 | b | 32.00 | 34.00 | 32.00 | 32.00 | c | 32.00 | |||||
| 1954 | 25.00 | b | 25.00 | b | 24.00 | f | 30.00 | 32.00 | a | 39.00 | b | 38.00 | 45.00 | b | 35.00 | b | 29.00 | 23.00 | a | 25.00 | d | 23.00 | ||||
| 1955 | 24.00 | a | 21.00 | 21.00 | 28.00 | 34.00 | e | 38.00 | 42.00 | 39.00 | 30.00 | 33.00 | a | 14.00 | a | 24.00 | a | 14.00 | ||||||||
| 1956 | 20.00 | 18.00 | 25.00 | 28.00 | 37.00 | c | 38.00 | a | 39.00 | a | 42.00 | 34.00 | 31.00 | m | 27.00 | a | 22.00 | 18.00 | ||||||||
| 1957 | 13.00 | 20.00 | 28.00 | 31.00 | 39.00 | 39.00 | b | 41.00 | 39.00 | 34.00 | 33.00 | d | 28.00 | 29.00 | a | 13.00 | ||||||||||
| 1958 | 29.00 | b | 26.00 | 26.00 | 31.00 | 33.00 | a | 42.00 | a | 43.00 | 42.00 | a | 39.00 | 34.00 | 24.00 | a | 34.00 | b | 24.00 | |||||||
| 1959 | 17.00 | b | 26.00 | 29.00 | 31.00 | e | 35.00 | 38.00 | a | 40.00 | 35.00 | 37.00 | 30.00 | b | 21.00 | c | 22.00 | c | 17.00 | |||||||
| 1960 | 19.00 | 19.00 | 16.00 | 25.00 | a | 33.00 | 37.00 | a | 34.00 | a | 38.00 | b | 30.00 | b | 27.00 | a | 23.00 | b | 22.00 | 16.00 | ||||||
| 1961 | 23.00 | 30.00 | 28.00 | 29.00 | a | 33.00 | 34.00 | 42.00 | b | 41.00 | c | 29.00 | 29.00 | 19.00 | a | 20.00 | b | 19.00 | ||||||||
| 1962 | 11.00 | 17.00 | 25.00 | a | 30.00 | 32.00 | 35.00 | a | 36.00 | 39.00 | 35.00 | a | 32.00 | 29.00 | 17.00 | 11.00 | ||||||||||
| 1963 | 12.00 | 30.00 | 25.00 | b | 29.00 | d | 31.00 | 38.00 | 38.00 | 43.00 | 37.00 | a | 30.00 | 29.00 | b | 24.00 | 12.00 | |||||||||
| 1964 | 23.00 | 24.00 | 24.00 | 24.00 | 32.00 | ----- | z | 40.00 | 38.00 | a | 36.00 | 28.00 | 23.00 | 15.00 | b | 15.00 | ||||||||||
| 1965 | 28.00 | 29.00 | 24.00 | 30.00 | 30.00 | 35.00 | 39.00 | a | 37.00 | 30.00 | 34.00 | 26.00 | 20.00 | a | 20.00 | |||||||||||
| 1966 | 22.00 | 25.00 | 23.00 | 30.00 | 32.00 | 33.00 | 41.00 | 39.00 | 40.00 | 30.00 | 26.00 | a | 29.00 | 22.00 | ||||||||||||
| 1967 | 26.00 | 27.00 | 26.00 | 31.00 | b | 34.00 | b | 43.00 | 41.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.00 | ||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 20.86 | 24.07 | 24.62 | 29.07 | 33.60 | 37.25 | 39.69 | 40.00 | 34.14 | 31.00 | 24.57 | 23.93 | 17.67 | |||||||||||||
| S.D. | 5.80 | 4.39 | 3.38 | 2.12 | 2.47 | 2.86 | 2.33 | 2.75 | 3.53 | 2.45 | 4.64 | 5.47 | 5.86 | |||||||||||||
| SKEW | -0.42 | -0.21 | -1.18 | -1.30 | 0.77 | 0.29 | -0.95 | 0.09 | 0.02 | -0.07 | -0.61 | 0.30 | -0.62 | |||||||||||||
| MAX | 29.00 | 30.00 | 29.00 | 31.00 | 39.00 | 43.00 | 43.00 | 45.00 | 40.00 | 34.00 | 32.00 | 34.00 | 22.00 | |||||||||||||
| MIN | 11.00 | 17.00 | 16.00 | 24.00 | 30.00 | 33.00 | 34.00 | 35.00 | 29.00 | 27.00 | 14.00 | 15.00 | 11.00 | |||||||||||||
| NO YRS | 14 | 14 | 13 | 15 | 15 | 16 | 16 | 14 | 14 | 13 | 14 | 14 | 3 | |||||||||||||