The data elements used in this study  the number of addresses served; the number of stops; (for city carriers only) volume per address, and address per kilometer (for rural carriers only).
Gathering this information took roughly 4 weeks at 8 hours per day.
mnli hypothesis: Gathering this information took roughly 4 weeks at 8 hours per day. premise: The data elements used in this study  the number of addresses served; the number of stops; (for city carriers only) volume per address, and address per kilometer (for rural carriers only).