from_stop_id,to_stop_id,transfer_type,min_transfer_time
2421917,2421917,0,
2421921,2421921,0,
2421938,2421939,3,
2421939,2421938,3,
2421958,2421958,0,
2421959,2421959,0,
2421960,2421960,0,
2421966,2421966,0,
2421970,2421970,0,
