| 21. | Public transport facilities were heavily utilised to travel to work at peak periods.
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| 22. | The usual peak period travel time is between 19 30 minutes.
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| 23. | The usual peak period travel time, is between 9 13 minutes.
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| 24. | The service now handles one million simultaneous users at peak periods.
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| 25. | Most of the passengers were likely to travel during the summer peak period.
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| 26. | His peak period of lichen study was from 1950 to 1960s.
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| 27. | Kai Tak airport handles an arriving flight every three minutes at peak periods.
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| 28. | During peak periods, many temps have to work 70-and 80-hour weeks.
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| 29. | Jersey Ave locals make local stops between Rahway and Elizabeth outside peak periods.
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| 30. | The usual peak period travel time, is between 6 8 minutes.
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