CREATE TABLE "puketapapa_local_board" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);

Question: How many values for decile occur in Mount Roskill with Monte Cecilia school with a roll greater than 170?
SQL: SELECT COUNT("decile") FROM "puketapapa_local_board" WHERE "area"='mount roskill' AND "name"='monte cecilia school' AND "roll">170;