trip_id,start_time,end_time,headway_secs
FL1,07:15:00,22:00:00,900
AL1,07:15:00,22:00:00,900
FL2,07:15:00,22:00:00,900
AL2,07:15:00,22:00:00,900
FF1,08:15:00,22:00:00,900
AF1,08:15:00,22:00:00,900
FF2,07:15:00,23:00:00,900
AF2,07:15:00,23:00:00,900