What is every value for viewers for ranking #51 for the Tuesday 9:00 p.m. timeslot?
CREATE TABLE "u_s_television_ratings" (
  "season" text,
  "timeslot" text,
  "premiere" text,
  "finale" text,
  "tv_season" text,
  "ranking" text,
  "viewers_in_millions" text
);
SELECT "viewers_in_millions" FROM "u_s_television_ratings" WHERE "ranking"='#51' AND "timeslot"='Tuesday 9:00 p.m.';