What is the earliest episode that was watched by 1.32 million viewers?
CREATE TABLE "table1_26736342_1" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "u_s_viewers_millions" text
);
SELECT MIN("no_in_series") FROM "table1_26736342_1" WHERE "u_s_viewers_millions"='1.32';