YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 72.98 | h | 60.58 | 43.76 | 23.82 | 28.08 | 39.06 | h | ||||
1960 | 17.82 | 19.09 | 19.97 | 45.50 | 55.10 | 61.50 | 67.82 | 69.34 | 61.83 | 48.66 | 35.28 | 16.95 | 43.24 | |||||||||||||
1961 | 13.69 | 24.57 | 31.77 | 40.20 | 54.23 | 66.63 | 70.31 | 70.58 | 59.80 | 50.27 | 32.23 | 16.42 | 44.23 | |||||||||||||
1962 | 8.42 | 12.68 | 26.89 | 43.00 | 60.94 | 65.32 | 66.98 | 68.15 | 56.13 | 51.05 | 34.38 | 18.65 | 42.71 | |||||||||||||
1963 | 4.03 | 10.73 | 31.67 | a | 47.58 | 54.56 | 68.67 | 72.21 | 66.66 | 60.53 | 58.98 | 38.52 | 10.21 | 43.70 | ||||||||||||
1964 | 19.24 | 21.91 | 26.94 | 45.60 | 60.84 | 66.85 | 74.19 | 66.89 | 58.38 | 46.76 | 36.60 | 13.81 | 44.83 | |||||||||||||
1965 | 9.74 | 11.46 | 21.26 | 41.07 | 60.19 | 64.88 | 67.53 | 65.69 | 54.55 | 48.53 | 33.92 | 26.10 | a | 42.08 | ||||||||||||
1966 | 2.40 | 15.29 | 33.24 | 41.25 | 51.60 | 67.25 | 74.08 | a | 66.45 | 58.53 | 46.76 | 32.26 | a | 22.67 | j | 44.46 | a | |||||||||
1967 | 15.00 | q | 10.98 | g | 27.66 | 44.10 | 49.98 | b | 65.21 | a | 67.68 | 64.45 | 58.18 | 45.58 | 30.26 | a | 21.10 | 47.42 | b | |||||||
1968 | 11.96 | g | 14.72 | 37.23 | 46.58 | 52.60 | 63.75 | 68.27 | 67.77 | 58.31 | a | 48.53 | 33.68 | 17.05 | 46.23 | a | ||||||||||
1969 | 8.55 | 17.87 | b | 24.13 | a | 46.62 | a | 58.05 | a | 57.97 | 69.30 | c | 71.13 | d | 60.32 | 44.92 | a | 31.23 | 19.71 | 42.48 | ||||||
1970 | 4.22 | b | 15.25 | 25.69 | 43.74 | a | 56.77 | 66.79 | b | 71.39 | 67.85 | 58.48 | 50.06 | 31.18 | 17.19 | 42.39 | ||||||||||
1971 | 5.58 | a | 15.48 | a | 23.53 | 44.18 | b | 52.97 | a | 68.32 | 66.27 | 65.55 | 59.68 | 53.40 | 33.35 | 19.16 | 42.29 | |||||||||
1972 | 6.11 | 11.29 | 24.16 | 40.23 | 60.71 | 62.62 | 67.23 | a | 66.77 | a | 57.32 | 42.02 | b | 31.43 | 12.79 | 40.22 | ||||||||||
1973 | 15.34 | 19.86 | 38.82 | 42.07 | 51.83 | a | 66.97 | 70.10 | 69.35 | 58.12 | a | 52.85 | 33.22 | a | 16.02 | 44.55 | ||||||||||
1974 | 13.13 | 14.02 | 27.63 | a | 44.70 | 52.58 | a | 61.88 | 71.67 | a | 66.23 | 53.62 | 46.31 | 34.68 | 23.40 | 42.49 | ||||||||||
1975 | 13.85 | 16.05 | 22.08 | 37.77 | 60.52 | 65.30 | 71.13 | 68.50 | 54.57 | 50.05 | a | 37.37 | 19.38 | a | 43.05 | |||||||||||
1976 | 7.31 | 23.53 | 30.21 | 47.79 | a | 54.32 | 67.93 | a | 70.40 | a | 68.47 | a | 58.33 | 40.64 | c | 25.17 | 7.39 | c | 41.79 | |||||||
1977 | -0.47 | 17.96 | 36.55 | 50.98 | 65.55 | 64.97 | 71.55 | a | 64.31 | 59.57 | 46.25 | a | 30.70 | 14.44 | 43.53 | |||||||||||
1978 | 5.53 | 10.20 | 26.71 | 43.68 | 57.55 | a | 65.15 | 67.89 | 69.24 | 62.36 | a | 45.87 | a | 30.78 | 13.02 | 41.50 | ||||||||||
1979 | 0.85 | 8.45 | 27.95 | 41.87 | 52.53 | a | 63.55 | b | 69.27 | a | 65.40 | a | 60.73 | 44.37 | 32.52 | 23.39 | 40.91 | |||||||||
1980 | 12.57 | b | 13.93 | 24.07 | a | 46.46 | b | 59.23 | 64.90 | 71.52 | a | 68.10 | a | 57.07 | 42.44 | 33.62 | d | 17.60 | a | 42.62 | ||||||
1981 | 15.24 | 19.98 | b | 33.42 | 45.93 | 54.95 | 65.07 | 68.74 | 68.24 | b | 57.15 | 43.65 | a | 37.29 | a | 17.05 | 43.89 | |||||||||
1982 | 1.66 | 15.44 | a | 26.63 | a | 40.07 | a | 61.38 | b | 60.10 | a | 71.93 | a | 66.21 | c | 57.31 | c | 47.25 | c | ----- | z | 25.19 | 43.02 | a | ||
1983 | 18.63 | a | 25.05 | 32.88 | a | 40.35 | 51.31 | b | 65.45 | a | 73.97 | a | 72.42 | 60.18 | 48.07 | c | 34.87 | c | 5.17 | a | 44.03 | |||||
1984 | 12.85 | a | 26.79 | c | 23.48 | 46.26 | a | 52.83 | b | 66.52 | d | 69.33 | b | 71.10 | a | 56.60 | a | 50.70 | a | 30.57 | g | 18.57 | h | 47.65 | b | |
1985 | 9.89 | c | 13.43 | 34.27 | 48.53 | a | 60.70 | a | 59.64 | p | 69.35 | k | 65.95 | b | 58.67 | 46.22 | a | 27.14 | e | 6.48 | a | 37.13 | b | |||
1986 | 13.82 | 15.38 | 31.79 | 48.57 | a | 58.90 | 64.62 | b | 70.45 | 64.62 | a | 59.02 | b | 47.25 | a | 27.68 | 21.77 | a | 43.66 | |||||||
1987 | 19.46 | c | 27.21 | b | 36.07 | a | 50.33 | 60.33 | a | 69.39 | b | 73.18 | 68.15 | ----- | z | 42.31 | 36.69 | d | 25.00 | 46.19 | a | |||||
1988 | 9.43 | b | 12.50 | b | 30.66 | b | 45.76 | a | 61.10 | 70.12 | 73.66 | 73.75 | e | 61.00 | h | 38.70 | i | 36.59 | s | ----- | z | 47.12 | d | |||
1989 | ----- | z | 10.04 | p | 24.15 | g | 43.45 | a | 56.53 | 63.83 | d | 72.17 | k | 67.53 | n | 58.56 | l | 48.63 | a | 28.45 | j | 7.14 | j | 53.11 | h | |
1990 | 24.10 | j | 18.71 | k | 33.50 | b | 46.53 | a | 52.81 | d | 66.80 | c | 68.55 | c | 68.03 | a | 60.76 | i | 45.17 | e | 35.85 | d | 26.03 | l | 52.16 | d |
1991 | 9.00 | k | 21.82 | i | 33.50 | i | 48.93 | a | 60.79 | e | 71.50 | f | 69.30 | c | 69.52 | f | 55.20 | e | 46.25 | c | 25.69 | l | 19.00 | j | 56.09 | g |
1992 | 20.05 | j | 25.70 | i | 30.14 | f | 40.66 | b | 58.15 | d | 63.12 | f | 62.98 | i | 63.05 | j | 56.74 | k | 45.25 | e | 32.34 | n | 23.56 | n | 48.02 | i |
1993 | 12.71 | l | 13.33 | j | 27.77 | g | 41.61 | c | 56.98 | g | 61.38 | i | 67.83 | k | 68.90 | g | 52.85 | j | 45.25 | k | 32.36 | h | 22.57 | k | 41.61 | k |
1994 | 2.42 | f | 8.79 | g | 31.58 | e | 44.31 | c | 55.96 | c | 66.92 | e | 67.48 | j | 64.77 | g | 60.32 | k | 49.89 | i | 36.48 | i | 24.55 | k | 49.69 | h |
1995 | 15.12 | k | 17.38 | h | 30.54 | g | 39.46 | b | 55.29 | c | 69.26 | g | 71.34 | l | 72.67 | j | 55.40 | i | 49.22 | h | 23.93 | i | 14.73 | p | 47.38 | j |
1996 | 7.90 | j | 16.91 | g | 21.71 | j | 40.19 | c | 52.88 | a | 63.74 | k | 67.25 | k | 67.52 | i | 58.86 | h | 46.62 | c | 24.81 | i | 16.02 | k | 46.56 | i |
1997 | 9.43 | k | 20.75 | h | 29.50 | j | 42.26 | a | 50.60 | a | 66.48 | i | 67.95 | i | 63.92 | g | 59.83 | j | 47.20 | f | 27.11 | l | 27.34 | i | 46.43 | j |
1998 | 18.41 | h | 29.53 | k | 32.16 | f | 48.83 | 62.91 | i | 62.64 | i | 70.41 | h | 68.02 | h | 62.30 | h | 47.94 | g | 37.91 | h | 28.20 | k | 48.83 | k | |
1999 | 8.44 | m | 26.03 | i | 33.52 | g | 47.86 | a | 58.45 | j | 64.50 | h | 72.93 | h | 66.09 | i | 56.71 | i | 47.04 | g | 40.71 | b | 22.07 | i | 44.29 | j |
2000 | 12.15 | k | 26.39 | g | 39.30 | a | 44.30 | 59.20 | f | 64.11 | h | 68.24 | l | 68.12 | g | 57.81 | i | 53.00 | g | 33.54 | g | 5.47 | l | 41.80 | j | |
2001 | 19.18 | k | 12.53 | l | 28.00 | i | 47.86 | e | 57.15 | g | 66.05 | h | 69.33 | g | 69.90 | f | 56.97 | m | 47.08 | g | 44.20 | c | 30.94 | n | 46.03 | j |
2002 | 22.81 | j | 26.16 | i | 25.85 | g | 44.80 | e | 51.82 | c | 64.25 | p | ----- | z | 68.43 | x | ----- | z | ----- | z | ----- | z | ----- | z | 48.31 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 9.96 | 16.79 | 29.43 | 44.46 | 56.29 | 65.33 | 70.20 | 67.84 | 58.32 | 47.22 | 33.36 | 17.50 | 42.87 | |||||||||||||
S.D. | 5.85 | 5.17 | 5.27 | 3.26 | 3.93 | 2.64 | 2.29 | 2.33 | 2.16 | 3.66 | 4.30 | 5.93 | 1.19 | |||||||||||||
SKEW | -0.04 | 0.55 | 0.11 | -0.02 | 0.26 | -0.71 | 0.21 | 0.63 | -0.33 | 0.90 | 0.05 | -0.31 | -0.36 | |||||||||||||
MAX | 19.46 | 27.21 | 39.30 | 50.98 | 65.55 | 70.12 | 74.19 | 73.75 | 62.36 | 58.98 | 44.20 | 28.08 | 44.83 | |||||||||||||
MIN | -0.47 | 8.45 | 19.97 | 37.77 | 49.98 | 57.97 | 66.27 | 64.31 | 53.62 | 40.64 | 23.82 | 5.17 | 40.22 | |||||||||||||
YRS | 27 | 28 | 32 | 43 | 38 | 31 | 30 | 30 | 29 | 34 | 30 | 27 | 21 |