CREATE TABLE "table1_18569389_1" (
  "no_in_series" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text,
  "u_s_viewers_million" text
);

Question: Name who directed the episode that was viewed by 4.22 million
SQL: SELECT "directed_by" FROM "table1_18569389_1" WHERE "u_s_viewers_million"='4.22';

Question: Name the title for production code 2t6908
SQL: SELECT "title" FROM "table1_18569389_1" WHERE "production_code"='2T6908';

Question: Name the total number for number in series that got 3.62 viewers
SQL: SELECT COUNT("no_in_series") FROM "table1_18569389_1" WHERE "u_s_viewers_million"='3.62';

Question: Name the air date that chris long directed
SQL: SELECT "original_air_date" FROM "table1_18569389_1" WHERE "directed_by"='Chris Long';

Question: Name the number of production code for 5.08
SQL: SELECT COUNT("production_code") FROM "table1_18569389_1" WHERE "u_s_viewers_million"='5.08';