What is the highest number of viewers for a rating greater than 9.4?
CREATE TABLE "ratings" (
  "air_date" text,
  "timeslot_est" text,
  "season" text,
  "rating" real,
  "share" real,
  "18_49_rating_share" text,
  "viewers_m" real,
  "weekly_rank_num" text
);
SELECT MAX("viewers_m") FROM "ratings" WHERE "rating">9.4;