from_stop_id,to_stop_id,transfer_type,min_transfer_time
6592187,6594318,0,
6592187,6594637,0,
6594318,6592187,0,
6594318,7608626,0,
6594637,6592187,0,
6594637,7608626,0,
6594912,7608626,0,
7608626,6594318,0,
7608626,6594637,0,
7608626,6594912,0,
