CREATE TABLE "table1_27927185_1" (
  "episode_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "originalairdate" text,
  "viewers_millions" text
);

Question: What is the lowest episode number that had 4.03 million viewers?
SQL: SELECT MIN("episode_num") FROM "table1_27927185_1" WHERE "viewers_millions"='4.03';

Question: How many million viewers watched episodes prior to episode 2.0?
SQL: SELECT "viewers_millions" FROM "table1_27927185_1" WHERE "episode_num"<2.0;

Question: What was the original air-date that had 4.77 million viewers?
SQL: SELECT "originalairdate" FROM "table1_27927185_1" WHERE "viewers_millions"='4.77';

Question: Who directed the episode with 6.37 million viewers?
SQL: SELECT "directed_by" FROM "table1_27927185_1" WHERE "viewers_millions"='6.37';