from_stop_id,to_stop_id,transfer_type,min_transfer_time
109_01,109_01,0,
109_01,109_02,0,
109_02,109_01,0,
109_02,109_02,0,
141_01,141_01,2,0
201_01,201_01,0,
303_01,303_01,0,
248_01,248_01,2,0
254_01,254_01,2,0
