YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | 17.36 | s | 13.45 | 13.45 | k | |
1948 | 16.52 | 14.04 | b | 14.67 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.28 | j | |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.10 | 44.32 | 39.20 | 33.06 | 20.38 | f | ----- | z | 40.42 | h | ||||
1951 | 16.82 | n | 9.89 | 17.39 | h | 24.43 | i | 32.25 | k | 35.35 | g | 47.65 | 44.00 | e | ----- | z | 29.69 | e | 23.33 | x | 16.10 | j | 32.81 | h | ||
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 | 53.48 | d | 48.80 | 39.29 | 25.37 | c | 21.36 | i | 41.74 | h | ||
1956 | 25.32 | 12.86 | 22.81 | 28.86 | a | 38.00 | 50.10 | 51.74 | 49.32 | 48.77 | 35.26 | 21.03 | 20.32 | 33.70 | ||||||||||||
1957 | 15.03 | a | 27.07 | a | 22.29 | 29.27 | 36.52 | 45.79 | a | 53.23 | 46.58 | 46.14 | b | 33.45 | 22.00 | 21.03 | 33.20 | |||||||||
1958 | 14.03 | 19.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.55 | j | ||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.55 | 44.53 | 32.47 | a | 26.48 | a | 14.68 | 33.34 | g | |||
1961 | 17.23 | 19.64 | 21.35 | ----- | z | 35.42 | 49.57 | 52.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.56 | f | ||||||
1962 | ----- | z | ----- | z | 16.14 | i | ----- | z | ----- | z | ----- | z | 47.50 | u | 49.94 | 44.27 | 34.74 | 25.71 | f | 17.77 | a | 36.68 | h | |||
1963 | 10.53 | a | 22.96 | b | 18.93 | b | 24.20 | e | ----- | z | 41.04 | d | 50.65 | 49.77 | 43.81 | c | 37.85 | e | 24.48 | e | 15.33 | g | 32.42 | b | ||
1964 | 1.64 | c | -0.96 | d | 12.64 | c | 23.32 | k | 32.92 | g | 41.70 | 51.55 | b | 49.53 | l | 39.82 | h | ----- | z | 20.00 | o | 14.53 | p | 21.32 | g | |
1965 | 18.68 | 17.68 | 14.74 | 24.72 | a | 28.44 | o | 36.79 | f | 49.03 | a | 44.90 | 37.40 | e | ----- | z | ----- | z | 18.19 | 28.17 | d | |||||
1966 | 11.87 | 8.75 | 20.81 | 21.76 | a | 36.88 | w | 44.83 | r | 49.77 | a | 50.64 | i | ----- | z | ----- | z | ----- | z | 12.88 | f | 22.59 | g | |||
1967 | 15.19 | 18.21 | ----- | z | ----- | z | ----- | z | 40.66 | a | 51.06 | 47.68 | 40.20 | 31.54 | c | 26.93 | 11.16 | 31.40 | c | |||||||
1968 | 16.13 | 22.17 | 19.87 | 23.77 | ----- | z | ----- | z | 48.06 | 44.68 | 38.73 | 32.19 | 20.70 | 10.40 | k | 29.59 | c | |||||||||
1969 | 19.86 | b | 15.68 | c | 13.76 | f | 25.67 | f | 34.37 | a | 39.33 | 48.71 | 50.13 | 41.86 | a | 28.77 | a | 23.60 | 20.00 | 32.23 | b | |||||
1970 | 14.45 | 21.75 | 20.10 | 21.67 | 35.45 | ----- | z | 49.16 | 48.81 | 36.64 | b | 28.40 | a | 27.13 | 18.77 | 29.30 | a | |||||||||
1971 | 17.90 | a | 18.64 | 21.16 | 29.63 | ----- | z | 42.35 | g | 51.10 | 49.35 | 38.27 | 27.15 | e | 21.03 | 13.03 | a | 28.73 | b | |||||||
1972 | 17.29 | 19.21 | 26.90 | 28.13 | 35.10 | 42.70 | 51.03 | 46.61 | 40.33 | 33.06 | 20.73 | 12.48 | 31.13 | |||||||||||||
1973 | 12.90 | ----- | z | 21.26 | 21.70 | 36.07 | c | ----- | z | 49.77 | 49.95 | k | 40.27 | 31.03 | a | 21.77 | ----- | z | 29.35 | d | ||||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.45 | 46.39 | ----- | z | 34.13 | ----- | z | ----- | z | 43.32 | i | |||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.42 | 48.65 | 43.07 | 29.60 | f | 21.40 | 14.74 | 35.65 | g | |||||
1976 | 13.29 | c | 21.28 | ----- | z | 25.27 | ----- | z | 40.93 | 50.16 | 47.68 | 42.90 | j | ----- | z | ----- | z | ----- | z | 33.10 | f | |||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.84 | 23.84 | k | |
1982 | 17.29 | 18.07 | a | 21.73 | a | 27.38 | a | 37.70 | a | 45.53 | 51.63 | a | 52.97 | a | 45.47 | 29.97 | a | 23.87 | 17.87 | a | 32.46 | |||||
1983 | 20.39 | 21.37 | a | 24.77 | 24.67 | 36.93 | b | 45.32 | b | 53.33 | a | 51.29 | 46.67 | 34.77 | a | 23.69 | a | 20.30 | a | 33.62 | ||||||
1984 | 15.17 | a | 15.64 | d | 22.86 | c | 26.24 | a | 42.19 | 45.86 | a | 52.74 | 51.06 | 47.12 | e | 27.93 | a | 23.25 | b | 18.00 | b | 32.34 | ||||
1985 | 15.97 | b | 13.96 | c | 20.31 | b | 31.74 | c | 40.03 | 49.17 | 54.13 | 51.58 | 39.59 | c | 33.96 | d | 19.42 | d | 19.00 | 32.41 | ||||||
1986 | 23.50 | a | 21.83 | d | 26.83 | g | 30.71 | f | 37.97 | a | 49.60 | 52.77 | 54.55 | b | 43.67 | f | 34.31 | e | 27.04 | c | 21.03 | 35.84 | c | |||
1987 | 15.00 | b | 18.92 | b | 22.30 | d | 34.20 | 38.76 | b | 50.42 | d | 50.06 | 50.21 | g | 44.65 | g | 38.17 | m | ----- | z | ----- | z | 32.81 | e | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.88 | 17.29 | 20.87 | 26.45 | 37.27 | 45.18 | 50.58 | 48.80 | 42.56 | 32.53 | 23.33 | 17.54 | 32.69 | |||||||||||||
S.D. | 4.63 | 5.84 | 3.31 | 3.68 | 2.19 | 3.92 | 2.03 | 2.93 | 3.81 | 3.16 | 2.48 | 3.51 | 0.90 | |||||||||||||
SKEW | -0.78 | -1.33 | -0.88 | 0.45 | 0.79 | -0.00 | -0.55 | 0.10 | 0.15 | 0.16 | 0.24 | -0.27 | -0.48 | |||||||||||||
MAX | 25.32 | 27.07 | 26.90 | 34.20 | 42.19 | 50.42 | 54.13 | 54.55 | 48.80 | 39.29 | 27.13 | 23.84 | 33.70 | |||||||||||||
MIN | 1.64 | -0.96 | 12.64 | 21.67 | 34.37 | 39.33 | 45.10 | 44.00 | 36.64 | 27.15 | 19.42 | 11.16 | 31.13 | |||||||||||||
YRS | 23 | 23 | 17 | 16 | 13 | 15 | 25 | 23 | 20 | 21 | 18 | 18 | 7 |