from_stop_id,to_stop_id,transfer_type,min_transfer_time
1_01,32_01,2,300
32_01,1_01,2,300
33_01,33_01,0,
50_01,50_01,0,
93_01,93_01,0,
146_01,268_01,0,
268_01,146_01,0,
