CREATE TABLE table_175980_2 (viewers__in_millions_ VARCHAR2, ranking VARCHAR2, timeslot VARCHAR2)

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