from_stop_id,to_stop_id,transfer_type
7513_01,7513_01,
7513_01,7513_02,
7513_02,7513_01,
7513_02,7513_02,
7603_01,7603_01,
7603_01,7603_02,
7603_02,7603_01,
7603_02,7603_02,
