YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | 87.00 | 87.00 | 87.00 | 95.00 | 90.00 | 92.00 | 93.00 | 92.00 | 92.00 | 90.00 | 90.00 | 89.00 | 95.00 | |||||||||||||
1956 | 88.00 | 86.00 | 88.00 | 89.00 | 91.00 | 89.00 | 92.00 | 92.00 | a | 92.00 | 90.00 | 94.00 | 90.00 | 94.00 | a | |||||||||||
1957 | 87.00 | 85.00 | 90.00 | 91.00 | 90.00 | 90.00 | 92.00 | 92.00 | 92.00 | 93.00 | 91.00 | 90.00 | 93.00 | |||||||||||||
1958 | 88.00 | 90.00 | 90.00 | 93.00 | 92.00 | 92.00 | 91.00 | b | 93.00 | 93.00 | 94.00 | 92.00 | 89.00 | 94.00 | b | |||||||||||
1959 | 89.00 | 87.00 | 89.00 | 90.00 | 90.00 | 92.00 | 93.00 | 94.00 | 94.00 | 92.00 | 92.00 | 89.00 | 94.00 | |||||||||||||
1960 | 89.00 | 90.00 | 90.00 | 90.00 | 90.00 | 91.00 | 92.00 | 92.00 | a | 90.00 | 93.00 | 93.00 | 88.00 | 93.00 | a | |||||||||||
1961 | 88.00 | 90.00 | 91.00 | 89.00 | 90.00 | 91.00 | 92.00 | 92.00 | 95.00 | 89.00 | 88.00 | 88.00 | 95.00 | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | 90.00 | 88.00 | 88.00 | 89.00 | 90.00 | 91.00 | 92.00 | 93.00 | 94.00 | 91.00 | 92.00 | 89.00 | 94.00 | |||||||||||||
1964 | 88.00 | 88.00 | 89.00 | 88.00 | 91.00 | 91.00 | 91.00 | 91.00 | 90.00 | 91.00 | 91.00 | 87.00 | 91.00 | |||||||||||||
1965 | 87.00 | 87.00 | 89.00 | 89.00 | 90.00 | 89.00 | 92.00 | 92.00 | 92.00 | a | 93.00 | 90.00 | 89.00 | 93.00 | a | |||||||||||
1966 | 88.00 | 89.00 | 89.00 | 90.00 | 89.00 | 92.00 | 92.00 | 93.00 | 93.00 | 92.00 | 90.00 | 88.00 | 93.00 | |||||||||||||
1967 | 90.00 | a | 87.00 | 88.00 | 89.00 | 90.00 | 94.00 | 91.00 | 92.00 | 93.00 | 92.00 | 90.00 | 88.00 | 94.00 | a | |||||||||||
1968 | 88.00 | 89.00 | 89.00 | 88.00 | 91.00 | 91.00 | 91.00 | 93.00 | 93.00 | 93.00 | 92.00 | 89.00 | 93.00 | |||||||||||||
1969 | 88.00 | 90.00 | 90.00 | 94.00 | 92.00 | 93.00 | 93.00 | 93.00 | 93.00 | 93.00 | 92.00 | 90.00 | 94.00 | |||||||||||||
1970 | 89.00 | 89.00 | 90.00 | 92.00 | 92.00 | 92.00 | 90.00 | 93.00 | 93.00 | 93.00 | 93.00 | 89.00 | 93.00 | |||||||||||||
1971 | 89.00 | 88.00 | 89.00 | 91.00 | 92.00 | 92.00 | 92.00 | 93.00 | b | 95.00 | 93.00 | 90.00 | 88.00 | 95.00 | b | |||||||||||
1972 | 85.00 | 87.00 | 92.00 | 93.00 | 93.00 | 93.00 | 93.00 | 94.00 | 94.00 | 91.00 | 90.00 | 86.00 | 94.00 | |||||||||||||
1973 | 86.00 | 87.00 | 88.00 | 89.00 | 91.00 | 91.00 | 91.00 | 90.00 | 91.00 | 91.00 | 89.00 | 87.00 | 91.00 | |||||||||||||
1974 | 83.00 | 85.00 | 87.00 | 90.00 | 92.00 | 92.00 | 91.00 | 90.00 | 91.00 | 91.00 | 87.00 | 86.00 | 92.00 | |||||||||||||
1975 | 85.00 | 86.00 | 87.00 | 87.00 | 91.00 | 91.00 | 89.00 | 89.00 | 89.00 | 88.00 | 87.00 | 85.00 | 91.00 | |||||||||||||
1976 | 83.00 | 85.00 | 88.00 | 87.00 | 90.00 | 91.00 | 92.00 | 91.00 | 92.00 | ----- | z | ----- | z | ----- | z | ----- | z | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 87.38 | 87.62 | 88.95 | 90.14 | 90.81 | 91.43 | 91.67 | 92.10 | 92.43 | 91.65 | 90.65 | 88.20 | 93.30 | |||||||||||||
S.D. | 1.99 | 1.69 | 1.32 | 2.20 | 1.03 | 1.21 | 1.02 | 1.30 | 1.60 | 1.57 | 1.93 | 1.40 | 1.26 | |||||||||||||
SKEW | -0.94 | -0.02 | 0.35 | 0.65 | 0.39 | -0.18 | -0.76 | -0.74 | -0.36 | -0.67 | -0.35 | -0.72 | -0.59 | |||||||||||||
MAX | 90.00 | 90.00 | 92.00 | 95.00 | 93.00 | 94.00 | 93.00 | 94.00 | 95.00 | 94.00 | 94.00 | 90.00 | 95.00 | |||||||||||||
MIN | 83.00 | 85.00 | 87.00 | 87.00 | 89.00 | 89.00 | 89.00 | 89.00 | 89.00 | 88.00 | 87.00 | 85.00 | 91.00 | |||||||||||||
YRS | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 |