trip_id,start_time,end_time,headway_secs,exact_times
AIR_TRAIN_1,05:00:00,22:59:59,240,0
AIR_TRAIN_1,23:00:00,28:59:59,900,0
AIR_TRAIN_2,05:00:00,22:59:59,240,0
AIR_TRAIN_2,23:00:00,28:59:59,900,0 