from_stop_id,to_stop_id,transfer_type,min_transfer_time
1252,1252,0,
1255,1415,0,
1276,1415,0,
1290,1290,0,
1367,1367,1,
1415,1255,1,
1415,1276,1,
1415,1415,1,
2383147,2383147,1,