trip_id,start_time,end_time,headway_secs
M-FSAT1DN,5:00:00,06:00:00,1200
M-FSAT2DN,6:00:00,24:00:00,600
M-FSAT1UP,5:00:00,06:00:00,1200
M-FSAT2UP,6:00:00,24:00:00,600
SUN1DN,8:00:00,24:00:00,600
SUN1UP,8:00:00,24:00:00,600