CREATE TABLE "table1_1849243_1" (
  "episode" text,
  "broadcast_date" text,
  "run_time" text,
  "viewers_in_millions" text,
  "archive" text
);

Question: How many viewers in millions watched the episode 23:55 minutes long?
SQL: SELECT "viewers_in_millions" FROM "table1_1849243_1" WHERE "run_time"='23:55';

Question: What is the broadcast date of the 16mm t/r episode?
SQL: SELECT "broadcast_date" FROM "table1_1849243_1" WHERE "archive"='16mm t/r';

Question: How many viewers watched the 16mm t/r episode?
SQL: SELECT "viewers_in_millions" FROM "table1_1849243_1" WHERE "archive"='16mm t/r';