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CAUTION: Extensive efforts have been made to assure the quality of information contained
in this report. It is impossible, however, to achieve complete accuracy and consistency
of the reported data. In addition, the reported data do not include all relevant
information generally necessary to explain apparent differences in performance
(e.g., information related to work rules, topography, climate, and unusual events
such as strikes and service start-ups). Users of this report, therefore, should
be careful not to draw unwarranted conclusions based solely on the data contained