CREATE TABLE table_27484208_1 (world_rank_by_arwu_ VARCHAR, _2013 VARCHAR, members VARCHAR)

What was the world rank by ARWU in 2013 of the University of T bingen?
SELECT world_rank_by_arwu_, _2013 FROM table_27484208_1 WHERE members = "University of Tübingen"
SELECT "world_rank_by_arwu_", "_2013" FROM "table_27484208_1" WHERE "University of Tübingen" = "members"