What is the lowest decile with 1-6 years and area of Maitland?
CREATE TABLE "gore_district" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT MIN("decile") FROM "gore_district" WHERE "years"='1-6' AND "area"='maitland';