from_stop_id,to_stop_id,transfer_type,min_transfer_time
1733,1733,1,
1733,300,1,
1747,313,1,
1760,1760,1,
1760,327,1,
300,1733,1,
300,300,1,
313,1747,1,
327,1760,1,
327,327,1,
