trip_id,start_time,end_time,headway_secs,exact_times
12880:1,08:45:00,12:45:30,1800,1
12881:1,13:00:00,17:00:30,1800,1
12882:1,08:30:00,12:30:30,1800,1
12883:1,13:15:00,17:15:30,1800,1