from_stop_id,to_stop_id,transfer_type,min_transfer_time
4070_01,4070_01,0,
4070_01,4070_02,0,
4070_02,4070_01,0,
4070_02,4070_02,0,
2000_01,2000_02,0,
2000_01,2000_03,0,
2000_02,2000_01,0,
2000_02,2000_03,0,
2000_03,2000_01,0,
2000_03,2000_02,0,
2330_01,2330_01,0,
2590_01,2590_01,0,
3610_01,3610_01,0,
3610_01,3610_02,0,
3610_02,3610_01,0,
3610_02,3610_02,0,
