YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | 85.29 | q | 90.27 | 95.58 | 96.77 | 91.60 | 77.39 | 74.60 | 64.29 | 84.36 | e | |||||||
1966 | 53.10 | 58.82 | 69.55 | 78.60 | 81.45 | 89.53 | 94.19 | 93.84 | 88.63 | 81.23 | 76.93 | 63.90 | 77.48 | |||||||||||||
1967 | 61.68 | 63.50 | 78.45 | 86.27 | 86.94 | 94.40 | 97.35 | 94.84 | 85.03 | 80.06 | 70.43 | 61.00 | 80.00 | |||||||||||||
1968 | 54.42 | 57.79 | 66.84 | 76.43 | 83.71 | 87.07 | 91.23 | 95.53 | a | 86.20 | 82.97 | ----- | z | 65.26 | 77.04 | a | ||||||||||
1969 | 62.06 | 63.29 | 63.19 | 78.17 | 82.29 | 90.23 | 98.42 | 96.90 | 89.97 | 79.90 | 69.63 | 67.84 | 78.49 | |||||||||||||
1970 | 53.97 | 63.32 | 65.48 | 78.43 | 81.39 | 89.07 | 94.48 | 97.48 | 86.70 | 78.00 | 70.93 | 71.00 | 77.52 | |||||||||||||
1971 | 68.26 | 67.54 | 75.16 | 79.37 | 85.55 | 92.93 | 96.77 | 90.57 | a | 87.40 | 81.90 | 72.55 | a | 65.61 | 80.30 | |||||||||||
1972 | 62.26 | 66.79 | 77.48 | 83.37 | 83.10 | 90.70 | 92.39 | 94.13 | 94.03 | 82.39 | 63.07 | 57.03 | 78.89 | |||||||||||||
1973 | 55.13 | 60.25 | 75.16 | 73.07 | 84.52 | 88.00 | 94.48 | 94.52 | 89.30 | 82.83 | a | 77.43 | 67.55 | 78.52 | ||||||||||||
1974 | 58.19 | 70.00 | 77.68 | 80.30 | 87.55 | 90.70 | 96.90 | 91.52 | 82.23 | 81.58 | 67.90 | 61.10 | 78.80 | |||||||||||||
1975 | 65.16 | 64.46 | 73.03 | 77.50 | 83.06 | 89.87 | 92.03 | 93.10 | 87.03 | 83.52 | 74.23 | 63.58 | 78.88 | |||||||||||||
1976 | 63.29 | 73.10 | 72.52 | 77.83 | 80.00 | 90.17 | 89.35 | 95.87 | 89.10 | 73.03 | 62.30 | 60.16 | 77.23 | |||||||||||||
1977 | 52.43 | a | 66.21 | 74.06 | 78.13 | 84.19 | 92.24 | a | 96.68 | 99.10 | 95.53 | 85.52 | 74.43 | 66.16 | 80.39 | |||||||||||
1978 | 50.77 | 53.07 | 71.10 | 80.13 | 89.00 | 93.17 | 99.84 | 95.39 | 87.43 | 82.74 | 71.30 | 60.52 | 77.87 | |||||||||||||
1979 | ----- | z | ----- | z | 72.89 | c | 77.17 | 81.88 | e | 89.57 | 92.45 | 93.68 | 88.17 | 86.61 | 68.43 | 63.10 | 81.39 | b | ||||||||
1980 | 61.97 | 62.48 | 70.94 | 77.50 | 84.16 | 94.63 | 100.77 | 96.81 | 92.43 | 81.14 | c | 68.17 | 63.00 | 79.50 | ||||||||||||
1981 | 61.26 | 64.26 | a | 69.77 | a | 80.83 | 82.90 | 87.63 | 91.77 | 95.61 | 88.47 | 78.55 | 71.73 | 62.70 | a | 77.96 | ||||||||||
1982 | 59.56 | d | 56.42 | b | 69.41 | d | 73.55 | j | 75.24 | b | 89.33 | 98.16 | 98.58 | 92.90 | 79.94 | 68.58 | f | 59.71 | g | 79.95 | c | |||||
1983 | 55.96 | f | 58.15 | b | 64.90 | 71.97 | 82.39 | 88.27 | 92.48 | b | 95.32 | 90.20 | 81.68 | 74.40 | 53.48 | 77.57 | a | |||||||||
1984 | 55.81 | 66.76 | 74.48 | 84.10 | 86.53 | a | 93.97 | 97.74 | 98.10 | 89.53 | 79.23 | 70.10 | 68.87 | 80.43 | ||||||||||||
1985 | 53.74 | 57.56 | a | 72.61 | 78.13 | 85.06 | 90.50 | 94.61 | 101.16 | 91.47 | 80.39 | 71.93 | 59.52 | 78.06 | ||||||||||||
1986 | 64.81 | 68.57 | 76.16 | 81.80 | 82.84 | 91.20 | 98.61 | 98.19 | 91.10 | 78.77 | 68.07 | 58.68 | 79.90 | |||||||||||||
1987 | 60.58 | 64.11 | 69.55 | 80.77 | 85.48 | 88.13 | 93.10 | 97.84 | 90.73 | 83.13 | 72.77 | 64.59 | b | 79.23 | ||||||||||||
1988 | 57.48 | 62.97 | 73.03 | a | 81.67 | 84.65 | 91.57 | 97.58 | 100.23 | 95.37 | 85.35 | 77.67 | 65.81 | 81.11 | ||||||||||||
1989 | 65.03 | 58.79 | 72.03 | 79.80 | 87.32 | 91.20 | 98.42 | 97.48 | 93.37 | 85.94 | 73.63 | 53.97 | 79.75 | |||||||||||||
1990 | 66.97 | 70.57 | 71.10 | 77.97 | 87.97 | a | 99.07 | 94.61 | 98.90 | 92.83 | 82.23 | 75.47 | 63.74 | 81.78 | ||||||||||||
1991 | 54.97 | 65.96 | 74.77 | 80.90 | 85.65 | 92.20 | 92.84 | 97.68 | 88.03 | 87.39 | 67.13 | 63.33 | a | 79.24 | ||||||||||||
1992 | 58.13 | 68.00 | 73.61 | 77.50 | 82.58 | 90.23 | 93.93 | a | 94.29 | 93.13 | 84.84 | 68.80 | 63.13 | 79.02 | ||||||||||||
1993 | 59.39 | 64.11 | 70.65 | 76.37 | 81.10 | 88.00 | 94.16 | 98.55 | 93.27 | 81.10 | 65.53 | 64.81 | 78.08 | |||||||||||||
1994 | 61.87 | a | 64.68 | 73.13 | 79.47 | 81.52 | 92.17 | 98.03 | 94.84 | 88.53 | 81.00 | 74.97 | 63.73 | a | 79.49 | |||||||||||
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | 84.24 | a | 91.77 | 95.31 | a | 99.68 | 95.13 | 88.50 | 81.43 | a | 72.31 | a | 67.19 | 86.17 | c | |||||
1997 | 60.06 | 62.79 | 75.69 | b | 74.00 | 83.58 | 88.67 | 95.29 | 96.77 | 94.03 | 81.10 | 67.17 | a | 63.52 | 78.56 | |||||||||||
1998 | 69.77 | a | 66.86 | 71.87 | 79.52 | a | 92.23 | a | 98.67 | 101.00 | 95.29 | 90.70 | 81.10 | 72.00 | a | 65.23 | a | 82.02 | ||||||||
1999 | 70.60 | a | 74.64 | 78.43 | x | 83.59 | h | 88.11 | c | 91.36 | e | 93.03 | a | 99.71 | 94.93 | 84.68 | 78.48 | a | 67.32 | c | 84.29 | b | ||||
2000 | 68.07 | a | 72.36 | a | 75.94 | 79.50 | 86.87 | 87.40 | t | 100.85 | r | 99.38 | b | 96.76 | a | 78.50 | a | 66.90 | 56.39 | m | 80.47 | c | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.35 | 64.32 | 72.26 | 79.09 | 84.49 | 91.18 | 95.53 | 96.37 | 90.42 | 81.63 | 71.26 | 63.35 | 79.20 | |||||||||||||
S.D. | 5.39 | 5.05 | 3.68 | 3.07 | 3.35 | 2.86 | 2.97 | 2.43 | 3.28 | 2.90 | 4.07 | 3.87 | 1.26 | |||||||||||||
SKEW | 0.12 | -0.05 | -0.61 | -0.01 | 0.05 | 1.08 | 0.05 | -0.24 | -0.15 | -0.36 | -0.23 | -0.72 | 0.52 | |||||||||||||
MAX | 70.60 | 74.64 | 78.45 | 86.27 | 92.23 | 99.07 | 101.00 | 101.16 | 96.76 | 87.39 | 78.48 | 71.00 | 82.02 | |||||||||||||
MIN | 50.77 | 53.07 | 63.19 | 71.97 | 75.24 | 87.07 | 89.35 | 90.57 | 82.23 | 73.03 | 62.30 | 53.48 | 77.23 | |||||||||||||
YRS | 31 | 32 | 32 | 32 | 34 | 34 | 34 | 35 | 35 | 35 | 33 | 33 | 27 |