A total of 68,433 runs from 1994 and 32,783 from the first
half of 1995 were used to generate the time series variables.
The predicted total run volume for 1995 was 74,151. In 1994
an average of 7.83 runs occurred each hour (95% confidence
interval [CI] 7.73, 7.93). In the first half of 1995, 8.13 runs
per hour (95% CI 7.98, 8.28) took place. Large variations in
the number of runs per hour were observed at different times
of the day (F = 323, P < .001) (Figure 1).
A total of 68,433 runs from 1994 and 32,783 from the first
half of 1995 were used to generate the time series variables.
The predicted total run volume for 1995 was 74,151. In 1994
an average of 7.83 runs occurred each hour (95% confidence
interval [CI] 7.73, 7.93). In the first half of 1995, 8.13 runs
per hour (95% CI 7.98, 8.28) took place. Large variations in
the number of runs per hour were observed at different times
of the day (F = 323, P < .001) (Figure 1).
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