YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.78 | b | 50.14 | j | 41.43 | g | 28.73 | 17.40 | 7.81 | 26.18 | h | |||
1929 | 20.47 | b | 16.64 | 3.52 | 21.40 | e | 40.94 | 54.08 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.59 | g | |||
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.09 | i | 19.48 | -0.85 | 9.31 | j | ||
1967 | 5.95 | 6.34 | 21.35 | 31.42 | 43.27 | 54.88 | 54.55 | c | 54.79 | 45.93 | 27.65 | 19.85 | 7.68 | 31.14 | ||||||||||||
1968 | 7.23 | 2.72 | 15.11 | 24.47 | 41.26 | 53.80 | 60.00 | 54.81 | 41.43 | a | 26.90 | 13.02 | -3.60 | 28.10 | ||||||||||||
1969 | 4.05 | 6.62 | 17.11 | 29.42 | 46.50 | 53.00 | 54.73 | 49.74 | 47.57 | 34.94 | 8.70 | 12.11 | 30.37 | |||||||||||||
1970 | -10.10 | 13.52 | 19.00 | 23.48 | 45.47 | 53.47 | 53.38 | a | 51.16 | 41.21 | b | 14.80 | p | 25.40 | a | 1.59 | b | 28.87 | a | |||||||
1971 | -9.38 | e | -3.48 | a | -0.63 | a | 19.45 | a | 34.64 | b | 51.90 | d | 53.73 | i | ----- | z | 44.40 | o | 29.43 | b | 13.32 | 6.29 | 15.73 | c | ||
1972 | -0.97 | a | 3.28 | -0.26 | 17.72 | 38.81 | 49.97 | 59.19 | 55.89 | 43.83 | 33.94 | 15.15 | 8.32 | 27.07 | ||||||||||||
1973 | -12.96 | d | ----- | z | ----- | z | 23.91 | s | 35.10 | a | 46.60 | 52.39 | 49.97 | a | 43.91 | b | 27.25 | c | 14.38 | b | 3.07 | d | 28.86 | c | ||
1974 | 2.73 | a | -11.80 | c | 17.33 | j | 26.45 | a | 43.67 | a | 51.25 | 53.65 | a | 53.92 | a | 47.48 | b | 23.87 | a | 19.75 | r | ----- | z | 32.36 | c | |
1975 | ----- | z | ----- | z | 20.95 | j | 20.20 | 38.38 | e | 51.40 | a | 55.65 | 51.98 | a | 41.07 | a | 29.63 | ----- | z | ----- | z | 41.19 | e | |||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.00 | 54.73 | ----- | z | ----- | z | 28.39 | 15.40 | 5.58 | e | 30.82 | g | ||||
1977 | 18.37 | a | 13.94 | a | ----- | z | 13.52 | a | 36.52 | 53.65 | 55.93 | c | 57.94 | d | 49.68 | h | 28.95 | a | ----- | z | 3.74 | 31.40 | c | |||
1978 | 16.50 | 12.52 | c | 14.40 | a | ----- | z | 45.08 | 47.57 | a | 55.18 | a | 57.38 | a | 45.73 | 26.16 | 24.23 | j | 16.11 | c | 33.66 | b | ||||
1979 | 17.39 | ----- | z | 31.95 | u | 30.57 | 44.73 | 50.10 | 52.81 | 53.16 | 44.00 | a | 33.33 | h | 22.88 | b | -8.41 | c | 34.13 | c | ||||||
1980 | -6.55 | c | 12.00 | m | 18.89 | q | ----- | z | 41.83 | g | 45.85 | 55.24 | 50.65 | g | 44.07 | i | 30.59 | b | 17.72 | a | -2.19 | 23.44 | f | |||
1981 | 17.23 | c | 10.52 | a | 27.68 | 30.02 | a | 47.77 | 52.03 | 52.31 | 51.47 | 43.04 | b | 29.18 | a | 15.03 | 0.78 | b | 31.42 | |||||||
1982 | 3.02 | h | 9.07 | f | 14.38 | f | 17.09 | b | 37.10 | 49.83 | 53.00 | 51.45 | 43.39 | b | 23.45 | c | 14.52 | e | 7.07 | j | 36.23 | d | ||||
1983 | -8.04 | h | 7.98 | a | 4.93 | c | 24.91 | a | 44.23 | a | 53.02 | 55.11 | 49.00 | a | 40.45 | 23.90 | 18.38 | 17.16 | 30.83 | a | ||||||
1984 | 2.84 | b | -14.45 | 19.87 | a | 7.15 | c | 26.61 | d | 49.08 | 49.84 | c | ----- | z | 40.47 | a | 23.86 | b | 8.17 | 13.16 | 20.60 | a | ||||
1985 | 21.87 | -0.62 | 10.13 | 10.10 | 35.23 | 42.68 | ----- | z | 44.70 | d | 36.28 | a | 22.34 | 15.84 | b | 21.43 | b | 23.63 | a | |||||||
1986 | 4.34 | b | 15.57 | a | 10.53 | a | 19.27 | ----- | z | ----- | z | 54.27 | 48.07 | d | 42.53 | 25.48 | b | 17.17 | 18.79 | 25.60 | b | |||||
1987 | 7.60 | 7.44 | a | 17.24 | ----- | z | 39.16 | 49.62 | a | 53.53 | a | 53.31 | b | 37.80 | 32.96 | d | ----- | z | ----- | z | 33.19 | c | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 5.92 | 5.42 | 12.86 | 21.57 | 40.23 | 50.49 | 54.31 | 52.28 | 42.71 | 27.88 | 16.21 | 6.77 | 29.62 | |||||||||||||
S.D. | 11.04 | 9.22 | 8.51 | 7.11 | 5.29 | 3.06 | 2.40 | 3.43 | 3.09 | 3.53 | 4.28 | 8.14 | 1.93 | |||||||||||||
SKEW | -0.16 | -0.86 | -0.19 | -0.40 | -0.73 | -0.84 | 0.60 | -0.28 | -0.28 | 0.33 | 0.12 | 0.11 | -0.40 | |||||||||||||
MAX | 21.87 | 16.64 | 27.68 | 31.42 | 47.77 | 54.88 | 60.00 | 57.94 | 47.57 | 34.94 | 25.40 | 21.43 | 31.42 | |||||||||||||
MIN | -12.96 | -14.45 | -0.63 | 7.15 | 26.61 | 42.68 | 49.84 | 44.70 | 36.28 | 22.34 | 8.17 | -8.41 | 27.07 | |||||||||||||
YRS | 18 | 16 | 14 | 17 | 19 | 20 | 20 | 17 | 17 | 20 | 18 | 19 | 5 |