| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -10.00 | a | -10.00 | |
| 1906 | ----- | z | -7.00 | -23.00 | 13.00 | 21.00 | 30.00 | a | 31.00 | 28.00 | 20.00 | 16.00 | -11.00 | -8.00 | -23.00 | |||||||||||
| 1907 | -14.00 | 6.00 | 3.00 | 15.00 | 22.00 | 29.00 | 30.00 | 23.00 | 22.00 | 21.00 | 12.00 | -7.00 | -14.00 | |||||||||||||
| 1908 | -21.00 | -12.00 | 0.00 | 11.00 | 20.00 | 27.00 | 27.00 | 24.00 | 13.00 | 13.00 | 10.00 | a | 0.00 | a | -21.00 | |||||||||||
| 1909 | -20.00 | -4.00 | 0.00 | 8.00 | 19.00 | 26.00 | a | 28.00 | a | 24.00 | 20.00 | 12.00 | -8.00 | -13.00 | -20.00 | |||||||||||
| 1910 | -16.00 | -20.00 | a | 12.00 | 14.00 | e | 22.00 | 24.00 | 28.00 | 23.00 | a | 19.00 | ----- | z | ----- | z | ----- | z | -20.00 | |||||||
| 1911 | -4.00 | -17.00 | -7.00 | 4.00 | 23.00 | a | 28.00 | 28.00 | 26.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | -17.00 | |||||||
| 1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | -6.00 | 5.00 | -6.00 | |||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.00 | a | 29.00 | 25.00 | 16.00 | 2.00 | a | -17.00 | -17.00 | |||||
| 1949 | -25.00 | c | -19.00 | a | 3.00 | 14.00 | 24.00 | 26.00 | 29.00 | 30.00 | a | 22.00 | 14.00 | ----- | z | -4.00 | -25.00 | |||||||||
| 1950 | -28.00 | -26.00 | 2.00 | 7.00 | 18.00 | 27.00 | 29.00 | a | 30.00 | 24.00 | 15.00 | 10.00 | 5.00 | a | -28.00 | |||||||||||
| 1951 | -28.00 | -18.00 | -6.00 | b | 13.00 | 25.00 | a | 25.00 | a | 31.00 | 27.00 | a | 25.00 | a | 18.00 | 0.00 | -11.00 | -28.00 | ||||||||
| 1952 | -9.00 | -8.00 | 3.00 | 11.00 | a | 24.00 | 28.00 | 29.00 | 28.00 | 24.00 | 21.00 | a | -1.00 | -5.00 | -9.00 | |||||||||||
| 1953 | 2.00 | -2.00 | 3.00 | 10.00 | 20.00 | 28.00 | 29.00 | 32.00 | 25.00 | 20.00 | 9.00 | a | 2.00 | -2.00 | ||||||||||||
| 1954 | -16.00 | 10.00 | -2.00 | 17.00 | 15.00 | 25.00 | 29.00 | 29.00 | 18.00 | 15.00 | 3.00 | a | -9.00 | -16.00 | ||||||||||||
| 1955 | -6.00 | -9.00 | -17.00 | 12.00 | 22.00 | 28.00 | 29.00 | 29.00 | 20.00 | 20.00 | -18.00 | a | -8.00 | a | -18.00 | |||||||||||
| 1956 | -20.00 | a | -21.00 | -10.00 | 11.00 | 24.00 | 29.00 | 30.00 | 29.00 | 23.00 | 12.00 | -2.00 | -8.00 | -21.00 | ||||||||||||
| 1957 | -18.00 | -10.00 | 8.00 | 21.00 | 30.00 | 30.00 | 29.00 | 28.00 | 27.00 | 23.00 | -3.00 | 5.00 | -18.00 | |||||||||||||
| 1958 | 0.00 | 10.00 | -2.00 | 16.00 | 25.00 | 32.00 | 33.00 | 33.00 | 26.00 | 18.00 | -7.00 | 14.00 | -7.00 | |||||||||||||
| 1959 | -19.00 | -4.00 | 4.00 | 16.00 | 21.00 | 27.00 | 29.00 | 28.00 | 24.00 | 22.00 | 4.00 | 6.00 | -19.00 | |||||||||||||
| 1960 | -10.00 | -19.00 | -6.00 | 14.00 | 18.00 | 27.00 | 32.00 | 25.00 | 21.00 | 19.00 | 7.00 | -5.00 | -19.00 | |||||||||||||
| 1961 | 0.00 | 16.00 | 8.00 | 14.00 | 25.00 | 30.00 | b | 33.00 | 32.00 | 19.00 | 17.00 | 1.00 | -19.00 | -19.00 | ||||||||||||
| 1962 | -24.00 | -22.00 | 0.00 | 17.00 | 25.00 | 24.00 | 28.00 | 29.00 | 24.00 | 22.00 | 2.00 | 0.00 | -24.00 | |||||||||||||
| 1963 | -23.00 | 14.00 | 3.00 | 5.00 | 27.00 | 30.00 | 28.00 | 30.00 | 32.00 | 12.00 | 8.00 | -9.00 | -23.00 | |||||||||||||
| 1964 | 2.00 | -2.00 | 7.00 | 9.00 | 16.00 | 28.00 | 30.00 | 29.00 | 24.00 | 20.00 | 8.00 | -28.00 | -28.00 | |||||||||||||
| 1965 | 1.00 | -13.00 | -7.00 | 18.00 | 21.00 | 24.00 | 30.00 | 25.00 | 18.00 | 23.00 | 11.00 | -10.00 | -13.00 | |||||||||||||
| 1966 | -5.00 | 0.00 | -9.00 | 14.00 | 21.00 | 25.00 | 32.00 | 29.00 | 28.00 | 15.00 | 12.00 | 7.00 | -9.00 | |||||||||||||
| 1967 | 4.00 | -3.00 | 2.00 | 8.00 | 19.00 | 30.00 | 32.00 | 34.00 | 25.00 | 24.00 | o | ----- | z | ----- | z | -3.00 | ||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | -12.38 | -7.20 | -1.24 | 12.48 | 21.88 | 27.48 | 29.65 | 28.19 | 22.72 | 17.57 | 1.87 | -5.08 | -17.26 | |||||||||||||
| S.D. | 10.51 | 11.87 | 7.98 | 4.13 | 3.44 | 2.22 | 1.67 | 2.94 | 3.90 | 3.65 | 8.06 | 9.37 | 6.91 | |||||||||||||
| SKEW | 0.13 | 0.38 | -0.91 | -0.21 | 0.12 | 0.00 | 0.62 | -0.11 | -0.13 | -0.09 | -0.66 | -0.20 | 0.48 | |||||||||||||
| MAX | 4.00 | 16.00 | 12.00 | 21.00 | 30.00 | 32.00 | 33.00 | 34.00 | 32.00 | 23.00 | 12.00 | 14.00 | -2.00 | |||||||||||||
| MIN | -28.00 | -26.00 | -23.00 | 4.00 | 15.00 | 24.00 | 27.00 | 23.00 | 13.00 | 12.00 | -18.00 | -28.00 | -28.00 | |||||||||||||
| NO YRS | 24 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 23 | 23 | 25 | 19 | |||||||||||||