from_stop_id,to_stop_id,transfer_type,min_transfer_time
4249237,4249237,1,
4249237,4249238,1,
4249238,4249237,1,
4249238,4249238,1,
4249251,4249252,1,
4249252,4249251,1,
4249255,4249255,1,
4249255,4249256,1,
4249256,4249255,1,
4249265,4249266,1,
4249266,4249265,1,
4249266,4249266,1,
