YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | 25.19 | e | 27.75 | 28.13 | 41.03 | 44.45 | 55.73 | 66.81 | 62.03 | 53.40 | 46.11 | c | 34.15 | c | 30.26 | h | 44.07 | a | ||||||||
1918 | 30.33 | d | 34.71 | 37.58 | 43.70 | 45.35 | 69.70 | 62.81 | 60.13 | 56.63 | 49.16 | ----- | z | ----- | z | 49.01 | b | |||||||||
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 | 25.19 | e | 35.89 | 34.23 | 41.43 | 50.52 | 57.00 | 66.32 | 59.77 | 55.30 | 46.48 | 33.25 | b | 28.06 | 44.45 | |||||||||||
1946 | 25.97 | a | 27.86 | 34.42 | 44.50 | 50.71 | 58.70 | 64.52 | 62.10 | 50.67 | 39.81 | 31.50 | 30.48 | 43.44 | ||||||||||||
1947 | 23.74 | 29.88 | d | 37.86 | c | 44.83 | 54.16 | 56.63 | 57.97 | 57.17 | a | 55.07 | 43.74 | 25.25 | f | 24.16 | f | 46.10 | b | |||||||
1948 | 22.76 | b | 27.83 | e | 30.72 | b | 41.75 | b | 47.73 | a | 56.57 | 62.58 | 57.55 | 51.52 | a | 44.06 | 26.70 | 26.94 | 41.39 | |||||||
1949 | 22.39 | h | 26.68 | 37.23 | 48.07 | a | 51.13 | 59.37 | 64.23 | 58.71 | 55.10 | 41.10 | 34.73 | 26.71 | 45.73 | a | ||||||||||
1950 | 27.94 | 33.39 | 38.48 | 47.27 | 50.58 | 56.93 | 66.84 | 61.77 | 57.00 | 46.61 | 37.57 | 32.23 | a | 46.38 | ||||||||||||
1951 | 30.81 | 32.57 | 35.52 | 47.90 | 52.94 | 57.97 | 66.35 | 62.48 | 55.60 | 45.07 | d | 35.07 | 30.65 | 46.08 | ||||||||||||
1952 | 31.13 | 34.83 | 35.61 | 42.83 | 54.84 | 53.10 | 64.74 | 63.48 | 57.00 | 45.39 | 31.63 | 30.61 | 45.43 | |||||||||||||
1953 | 33.39 | 27.04 | 33.65 | 41.62 | a | 45.03 | 54.59 | a | 68.61 | 59.03 | 53.73 | 41.55 | 36.33 | 25.52 | 43.34 | |||||||||||
1954 | 29.54 | c | 34.07 | 35.74 | 47.20 | 53.26 | 57.10 | 68.55 | 58.55 | 52.60 | 41.68 | 36.27 | 27.42 | 45.16 | ||||||||||||
1955 | 28.77 | a | 27.43 | 36.39 | 40.52 | a | 49.07 | a | 56.47 | 62.94 | 66.45 | 55.57 | 43.83 | g | 32.43 | 35.82 | c | 44.71 | a | |||||||
1956 | 34.74 | 28.66 | 36.23 | 42.80 | 49.13 | 58.87 | 61.94 | 58.06 | 55.70 | 42.81 | 28.07 | 25.48 | 43.54 | |||||||||||||
1957 | 29.23 | 40.57 | 40.55 | b | 44.54 | b | 48.35 | 61.00 | 61.97 | 59.26 | 52.87 | 44.48 | 32.13 | 28.35 | 45.28 | |||||||||||
1958 | 28.35 | 38.36 | 35.58 | 41.60 | 50.10 | 56.03 | 61.26 | 63.17 | a | 53.10 | 44.55 | 29.07 | ----- | z | 45.56 | a | ||||||||||
1959 | 30.21 | b | 30.46 | 40.42 | 48.47 | 48.81 | 60.77 | 67.48 | 60.61 | 55.77 | 47.37 | a | 32.97 | 29.10 | 46.04 | |||||||||||
1960 | 29.03 | 32.93 | 40.06 | 42.97 | 51.00 | 63.30 | 65.23 | 59.48 | 57.31 | a | 44.45 | 34.10 | 26.87 | 45.56 | ||||||||||||
1961 | 25.27 | a | 32.68 | 39.23 | 44.07 | 48.52 | 61.00 | 67.55 | 64.68 | 51.53 | 43.77 | 34.57 | 31.17 | a | 45.34 | |||||||||||
1962 | 26.97 | 36.79 | 35.06 | 45.03 | 48.45 | 58.27 | 62.35 | 61.45 | 53.47 | 45.29 | 36.20 | 27.39 | 44.73 | |||||||||||||
1963 | 25.97 | 40.32 | 37.19 | 40.60 | 51.90 | 56.37 | 62.52 | 58.94 | 56.47 | 49.65 | 37.30 | 26.84 | 45.34 | |||||||||||||
1964 | 28.19 | 26.97 | 34.13 | 42.03 | 49.61 | 57.60 | 63.94 | 62.74 | 50.70 | 48.52 | 33.13 | 33.32 | 44.24 | |||||||||||||
1965 | 29.35 | 30.61 | 38.74 | 44.03 | 50.06 | 53.57 | 59.58 | 61.19 | 51.33 | 43.94 | 40.27 | 30.70 | a | 44.45 | ||||||||||||
1966 | 27.52 | 29.78 | a | 37.26 | 44.27 | 49.81 | 57.47 | 61.32 | 63.87 | 54.50 | 43.03 | 36.70 | 28.55 | 44.51 | ||||||||||||
1967 | 26.47 | a | 29.43 | 38.26 | 36.37 | 49.55 | 53.43 | 66.42 | 65.77 | 57.93 | 44.58 | 40.23 | 27.58 | 44.67 | ||||||||||||
1968 | 27.58 | 37.52 | 36.84 | 40.20 | 50.19 | 59.60 | 64.81 | 59.74 | 53.77 | 44.77 | 35.47 | 25.26 | 44.65 | |||||||||||||
1969 | 35.32 | 33.11 | 34.71 | 41.70 | 51.58 | 56.60 | 63.65 | 61.06 | 56.57 | 41.65 | 35.30 | 29.58 | 45.07 | |||||||||||||
1970 | 32.23 | 34.32 | 36.90 | 37.67 | 49.84 | 57.07 | 66.03 | 63.97 | 51.20 | 43.45 | 37.23 | 31.16 | 45.09 | |||||||||||||
1971 | 27.84 | 31.71 | 35.65 | 38.53 | 45.32 | 55.70 | 64.39 | 64.19 | 55.17 | 39.94 | 32.90 | 25.97 | 43.11 | |||||||||||||
1972 | 25.87 | 33.34 | 41.81 | 41.60 | 49.84 | 57.10 | 63.65 | 60.77 | 53.03 | 50.00 | y | ----- | z | ----- | z | 47.45 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.44 | 32.25 | 36.47 | 42.97 | 49.73 | 57.79 | 64.24 | 61.27 | 54.32 | 44.39 | 34.27 | 28.87 | 44.66 | |||||||||||||
S.D. | 3.05 | 4.00 | 2.83 | 3.00 | 2.51 | 3.22 | 2.58 | 2.45 | 2.14 | 2.52 | 3.24 | 2.66 | 1.13 | |||||||||||||
SKEW | 0.44 | 0.40 | -0.71 | 0.00 | -0.25 | 1.71 | -0.29 | 0.28 | -0.19 | 0.20 | -0.36 | 0.71 | -1.02 | |||||||||||||
MAX | 35.32 | 40.57 | 41.81 | 48.47 | 54.84 | 69.70 | 68.61 | 66.45 | 57.93 | 49.65 | 40.27 | 35.82 | 46.38 | |||||||||||||
MIN | 22.76 | 26.68 | 28.13 | 36.37 | 44.45 | 53.10 | 57.97 | 57.17 | 50.67 | 39.81 | 26.70 | 25.26 | 41.39 | |||||||||||||
YRS | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 28 | 27 | 25 | 23 |