from_stop_id,to_stop_id,transfer_type,min_transfer_time
3,3,1,
3,164,1,
3,950,1,
4,4,1,
9,9,1,
28,28,1,
30,30,1,
52,428,1,
73,73,1,
142,3,1,
164,164,1,
164,950,1,
174,428,1,
273,1672,1,
273,1673,1,
428,52,1,
539,1580,1,
580,270,1,
642,414,1,
786,414,1,
950,148,1,
950,274,1,
1672,273,1,
1673,273,1,
