YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1919 | 16.90 | 12.14 | 14.23 | r | 30.79 | b | 37.17 | b | 48.13 | 58.88 | g | 53.45 | 47.80 | 28.61 | 17.61 | b | 11.20 | a | 30.38 | b | ||||||
1920 | 18.39 | 17.17 | 20.52 | b | 24.37 | 41.61 | 48.77 | 52.43 | a | 49.80 | a | 42.30 | 31.00 | b | 20.60 | 14.71 | 31.81 | |||||||||
1921 | 13.61 | 17.39 | 24.72 | b | 28.63 | 39.73 | a | 50.90 | 54.58 | 53.68 | 43.20 | 32.81 | 22.97 | 17.07 | a | 33.27 | ||||||||||
1922 | 5.42 | 10.65 | b | 20.74 | 28.77 | 39.17 | a | 50.07 | 52.42 | 57.17 | a | 46.66 | a | 31.03 | 18.27 | d | 15.32 | 31.31 | ||||||||
1923 | 19.45 | 9.63 | a | 18.26 | 27.27 | 39.71 | 49.90 | a | 56.58 | 53.77 | a | 44.46 | b | 29.84 | 25.15 | c | 11.97 | 32.16 | ||||||||
1924 | 8.48 | 18.70 | b | 14.13 | a | 27.33 | 33.53 | a | 46.07 | 52.84 | 50.10 | a | 41.10 | a | 34.55 | b | 21.57 | b | 7.00 | a | 29.62 | |||||
1925 | 12.35 | 20.15 | a | 22.57 | c | 32.96 | b | 40.03 | 49.28 | a | 55.56 | d | 53.06 | 45.30 | c | 25.62 | b | 21.21 | b | 13.37 | a | 32.62 | ||||
1926 | 10.97 | 22.00 | a | 21.17 | a | 28.80 | 40.50 | a | 49.38 | i | 53.55 | 51.35 | 39.24 | a | 33.93 | a | 25.97 | 14.35 | 31.08 | a | ||||||
1927 | 15.54 | c | 16.30 | a | 22.45 | b | 29.66 | a | 40.53 | a | 47.47 | 51.64 | c | 50.79 | b | 42.83 | 31.29 | 25.62 | d | 8.29 | 31.87 | |||||
1928 | 20.71 | 16.83 | 24.13 | 27.37 | 43.14 | b | 44.76 | a | 53.29 | 49.23 | 40.31 | a | 33.50 | a | 22.10 | a | 10.58 | 32.16 | ||||||||
1929 | 5.87 | a | 3.33 | a | 21.87 | h | 26.93 | b | 37.07 | d | 45.56 | c | 55.62 | b | 54.48 | 40.60 | 32.29 | c | 12.27 | 16.87 | h | 31.40 | b | |||
1930 | -3.55 | 23.39 | 18.87 | 37.07 | a | 37.27 | a | 45.62 | a | 54.77 | 54.48 | 41.63 | 31.10 | b | 21.32 | b | 14.90 | 31.41 | ||||||||
1931 | 16.25 | c | 19.52 | a | 19.10 | 28.66 | a | 36.35 | 51.70 | 55.71 | 51.26 | 46.90 | 33.68 | 17.07 | 15.45 | 32.64 | ||||||||||
1932 | 8.35 | 20.24 | 15.03 | 32.40 | 42.29 | 47.47 | 55.68 | 54.68 | 42.37 | 27.97 | 24.73 | 4.00 | 31.27 | |||||||||||||
1933 | 13.52 | 7.54 | 24.19 | 27.53 | 37.52 | 51.13 | 56.97 | 53.16 | 45.87 | 31.71 | 23.73 | 22.16 | 32.92 | |||||||||||||
1934 | 19.52 | 18.93 | 23.77 | 31.67 | 44.68 | 48.27 | 56.16 | 53.84 | 36.77 | 35.45 | 23.57 | 14.71 | 33.94 | |||||||||||||
1935 | 15.06 | 16.75 | 22.58 | 27.33 | 37.52 | 47.17 | 55.52 | 53.74 | 42.90 | 30.74 | 20.00 | 15.23 | 32.04 | |||||||||||||
1936 | 11.19 | 1.86 | 22.19 | 30.03 | 42.03 | 52.13 | 57.19 | 53.19 | 43.47 | 31.74 | 22.10 | 16.26 | 31.95 | |||||||||||||
1937 | -3.45 | 13.46 | 20.61 | 28.50 | 40.84 | 48.23 | 54.35 | 54.74 | 44.60 | 33.71 | 20.93 | 12.68 | 30.77 | |||||||||||||
1938 | 14.94 | 16.57 | 27.42 | 30.57 | 39.23 | 49.40 | 53.58 | 54.61 | 46.70 | 33.94 | 18.67 | 15.26 | 33.41 | |||||||||||||
1939 | 18.77 | 7.93 | 23.03 | 30.00 | 41.71 | 45.37 | 54.45 | 48.77 | 43.67 | 31.10 | 19.80 | 20.13 | 32.06 | |||||||||||||
1940 | 8.06 | 19.03 | 26.06 | 30.43 | 40.00 | 49.27 | 55.03 | 50.94 | 47.97 | 35.48 | 16.63 | 17.10 | 33.00 | |||||||||||||
1941 | 14.26 | 17.79 | 21.39 | 31.23 | 41.90 | 46.70 | 53.16 | 53.52 | 40.37 | 32.42 | 21.43 | 14.42 | 32.38 | |||||||||||||
1942 | 8.03 | 10.04 | 19.90 | 31.53 | 36.45 | 49.10 | 52.77 | 51.19 | 41.67 | 33.29 | 21.23 | 17.94 | 31.10 | |||||||||||||
1943 | 14.45 | 19.86 | 15.32 | 35.40 | 37.35 | 47.03 | 53.90 | 54.94 | 39.30 | 25.23 | 21.87 | 16.10 | 31.73 | |||||||||||||
1944 | 13.32 | 14.86 | 18.23 | 28.63 | 38.90 | 47.30 | 52.06 | 51.52 | 39.30 | 31.97 | 22.63 | 13.32 | 31.00 | |||||||||||||
1945 | 16.00 | 19.43 | 19.42 | 26.43 | 37.55 | 45.33 | 54.13 | 54.35 | 40.47 | 34.29 | 22.57 | 12.35 | 31.86 | |||||||||||||
1946 | 15.03 | 16.00 | 23.90 | 35.47 | 37.55 | 46.70 | 55.13 | 53.61 | 43.33 | 32.35 | 21.97 | 20.74 | 33.48 | |||||||||||||
1947 | 15.03 | 13.86 | 19.84 | 31.03 | 40.00 | 45.97 | 55.06 | 55.10 | 45.10 | 37.81 | 17.87 | 19.61 | 33.02 | |||||||||||||
1948 | 14.10 | 13.62 | 16.90 | 32.43 | 41.13 | 50.83 | 53.90 | 53.77 | 46.33 | 30.10 | 20.45 | a | 11.39 | 32.08 | ||||||||||||
1949 | 0.87 | a | 12.15 | a | 22.60 | a | 33.86 | h | 42.22 | d | 49.80 | 55.81 | 52.16 | 42.50 | 32.10 | 28.77 | 12.45 | 31.95 | a | |||||||
1950 | 7.35 | 19.29 | 19.35 | 27.50 | 34.55 | 44.90 | 51.84 | 48.23 | 44.67 | 34.29 | 22.47 | 19.42 | 31.15 | |||||||||||||
1951 | 10.61 | 15.75 | 15.39 | 26.07 | 40.58 | 43.66 | a | 55.26 | 52.39 | 41.57 | 33.13 | 20.33 | 12.58 | 30.61 | ||||||||||||
1952 | 13.29 | 17.62 | 18.13 | 29.93 | 40.39 | 52.40 | 51.68 | 54.52 | 43.37 | 30.32 | 15.43 | 15.06 | 31.85 | |||||||||||||
1953 | 23.74 | 15.79 | 22.42 | 25.47 | 37.68 | 50.23 | 56.32 | 53.10 | 44.10 | 32.94 | 24.60 | 15.97 | 33.53 | |||||||||||||
1954 | 16.87 | 22.79 | 15.84 | 32.63 | 38.42 | 48.03 | 57.39 | 52.81 | 45.90 | 32.45 | 24.41 | a | 17.42 | 33.75 | ||||||||||||
1955 | 9.29 | 9.11 | 16.48 | 29.67 | 40.10 | 46.27 | 55.26 | 55.77 | 43.47 | 33.65 | 18.70 | 17.42 | 31.26 | |||||||||||||
1956 | 15.71 | 13.03 | 20.10 | 25.87 | 41.84 | 50.17 | 53.23 | 50.39 | 42.13 | 32.58 | 22.60 | 21.35 | 32.42 | |||||||||||||
1957 | 7.77 | a | 19.43 | 21.06 | 28.60 | 38.68 | 47.17 | 54.13 | 54.00 | 39.57 | 37.10 | 21.47 | 22.39 | 32.61 | ||||||||||||
1958 | 15.90 | 18.46 | 17.81 | 29.97 | 44.10 | 49.10 | 51.55 | 53.19 | 44.33 | 33.13 | 22.00 | a | 18.71 | 33.19 | ||||||||||||
1959 | 13.39 | 14.46 | 19.87 | 28.10 | 40.52 | 51.67 | 53.45 | 56.52 | 42.63 | 30.48 | 18.63 | 18.71 | 32.37 | |||||||||||||
1960 | 12.61 | 13.24 | 21.61 | 32.83 | 38.65 | 49.57 | 53.42 | 51.23 | 45.13 | 34.68 | 22.77 | 15.87 | 32.63 | |||||||||||||
1961 | 15.97 | 20.46 | 23.97 | 28.33 | 39.71 | 49.47 | 53.94 | 54.32 | 38.57 | 30.84 | 18.60 | 12.97 | 32.26 | |||||||||||||
1962 | 4.71 | 17.14 | 18.94 | 31.66 | a | 41.77 | 48.73 | 54.39 | 50.10 | 42.87 | 35.03 | 25.90 | 17.42 | 32.39 | ||||||||||||
1963 | 2.52 | 21.30 | a | 22.81 | 30.70 | 41.42 | 49.87 | 57.39 | 55.16 | 49.33 | 38.68 | 23.80 | 13.06 | 33.84 | ||||||||||||
1964 | 14.10 | 11.07 | 15.58 | 31.00 | 41.74 | 46.62 | a | 56.19 | 51.45 | 40.21 | a | 30.65 | 22.23 | 15.00 | 31.32 | |||||||||||
1965 | 17.07 | a | 13.57 | 10.47 | a | 32.07 | 38.40 | a | 48.17 | 54.16 | 50.84 | 39.17 | 36.71 | 27.03 | 16.17 | a | 31.98 | |||||||||
1966 | 9.74 | 13.29 | 22.23 | 25.13 | 38.58 | 48.43 | 59.10 | 53.32 | 47.13 | 32.58 | 25.66 | a | 16.00 | 32.60 | ||||||||||||
1967 | 18.43 | a | 22.04 | 25.23 | 30.50 | 38.71 | 48.27 | 54.52 | 50.58 | 44.59 | a | 34.17 | a | 18.90 | 10.87 | 33.07 | ||||||||||
1968 | 13.29 | 19.07 | 23.16 | 27.13 | 37.77 | 49.77 | ----- | z | 50.19 | 41.10 | 33.74 | 21.97 | 10.74 | 29.81 | a | |||||||||||
1969 | 13.06 | 16.64 | 16.68 | 33.10 | a | 41.06 | 45.25 | b | 55.61 | 54.21 | b | 46.80 | 27.26 | 23.57 | 18.03 | 32.61 | ||||||||||
1970 | 15.13 | 19.11 | 19.32 | 26.93 | 40.94 | 46.67 | 55.19 | 55.42 | 41.59 | a | 29.19 | 23.10 | 12.00 | 32.05 | ||||||||||||
1971 | 17.34 | b | 14.61 | 21.19 | 30.40 | 39.45 | 50.67 | 52.84 | 54.52 | 39.04 | e | 31.77 | 22.70 | 13.03 | 32.30 | |||||||||||
1972 | ----- | z | 21.86 | 28.62 | b | 32.00 | 39.19 | 50.70 | 50.77 | 51.83 | a | 42.37 | 32.61 | 20.20 | 8.77 | 34.45 | a | |||||||||
1973 | 13.55 | 18.25 | 24.87 | 28.34 | a | 39.17 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.84 | g | |||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 50.16 | 46.57 | 34.39 | 15.21 | b | 19.55 | 33.18 | g | ||||
1980 | 9.07 | a | 13.66 | 18.42 | 28.77 | 37.23 | 47.27 | 55.55 | 51.16 | 42.60 | 30.13 | 20.62 | a | 20.23 | 31.22 | |||||||||||
1981 | 15.87 | 14.75 | 23.52 | b | 34.50 | 38.42 | 49.10 | a | 53.97 | 52.42 | 44.70 | 31.39 | 24.97 | 17.45 | 33.42 | |||||||||||
1982 | 9.63 | l | 13.25 | h | 21.74 | h | 25.15 | d | 38.46 | g | 45.91 | g | 53.64 | c | 54.71 | g | 44.71 | i | 32.17 | h | 17.33 | 17.03 | 28.29 | h | ||
1983 | 21.23 | 20.38 | b | 23.53 | a | 26.73 | 35.97 | a | 48.00 | a | 54.00 | b | 58.10 | 41.68 | b | 31.48 | 18.68 | b | 2.38 | b | 31.85 | |||||
1984 | 10.37 | a | 18.59 | b | 22.48 | 26.60 | 40.90 | 46.41 | c | 55.40 | a | 55.29 | 36.50 | f | 26.28 | b | 19.30 | 9.36 | c | 30.09 | a | |||||
1985 | 8.59 | d | 8.11 | j | 21.26 | 33.57 | 41.16 | 46.87 | 54.97 | 49.86 | c | 39.28 | a | 29.67 | a | 10.41 | a | 11.68 | 31.57 | a | ||||||
1986 | 19.90 | a | 14.52 | a | 27.90 | a | 32.57 | b | 39.65 | 53.59 | a | 55.70 | a | 53.90 | a | 43.55 | a | 33.48 | 22.07 | a | 14.07 | a | 34.24 | |||
1987 | 16.53 | a | 20.19 | a | 23.45 | 33.50 | b | 45.23 | e | 51.60 | 55.71 | 51.90 | 41.67 | 29.87 | 23.52 | a | 12.93 | a | 33.84 | |||||||
1988 | 7.90 | 17.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 12.92 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.72 | 16.04 | 20.85 | 29.75 | 39.62 | 48.40 | 54.51 | 52.86 | 43.03 | 32.18 | 21.27 | 14.74 | 32.29 | |||||||||||||
S.D. | 5.52 | 4.49 | 3.56 | 2.81 | 2.28 | 2.18 | 1.66 | 2.11 | 2.72 | 2.68 | 3.34 | 4.05 | 0.96 | |||||||||||||
SKEW | -0.85 | -0.94 | -0.32 | 0.31 | -0.04 | 0.10 | 0.07 | -0.03 | 0.09 | -0.28 | -0.70 | -0.57 | -0.15 | |||||||||||||
MAX | 23.74 | 23.39 | 28.62 | 37.07 | 45.23 | 53.59 | 59.10 | 58.10 | 49.33 | 38.68 | 28.77 | 22.39 | 34.24 | |||||||||||||
MIN | -3.55 | 1.86 | 10.47 | 24.37 | 33.53 | 43.66 | 50.77 | 48.23 | 36.77 | 25.23 | 10.41 | 2.38 | 29.62 | |||||||||||||
YRS | 62 | 62 | 60 | 62 | 62 | 60 | 60 | 62 | 61 | 62 | 63 | 62 | 53 |