trip_id,start_time,end_time,headway_secs,exact_times
t_874462_b_81563_tn_frequencies_trip,10:00:00,15:40:01,1200,0
t_819605_b_80219_tn_frequencies_trip,09:30:00,18:45:01,900,0
t_1064032_b_81562_tn_frequencies_trip,10:00:00,15:40:01,1200,0