What is the lowest value in April with New York Rangers as opponent for a game less than 82?
CREATE TABLE "regular_season" (
  "game" real,
  "april" real,
  "opponent" text,
  "score" text,
  "record" text,
  "points" real
);
SELECT MIN("april") FROM "regular_season" WHERE "opponent"='new york rangers' AND "game"<82;