CREATE TABLE "table1_20098479_1" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "u_s_viewers_million" text,
  "original_air_date" text,
  "production_code" real
);

Question: Who wrote episode number 48
SQL: SELECT "written_by" FROM "table1_20098479_1" WHERE "no_in_series"=48;

Question: What is the lowest production code
SQL: SELECT MIN("production_code") FROM "table1_20098479_1";