Table schema:
CREATE TABLE table_175980_2 (viewers__in_millions_ VARCHAR, ranking VARCHAR, timeslot VARCHAR)

Question: What is every value for viewers for ranking #51 for the Tuesday 9:00 p.m. timeslot?
SQL: SELECT viewers__in_millions_ FROM table_175980_2 WHERE ranking = "#51" AND timeslot = "Tuesday 9:00 p.m."