Who were the opponents that had an attendance of exactly 16115?
CREATE TABLE "table1_24852001_2" (
  "week" real,
  "date" text,
  "kickoff" text,
  "opponent" text,
  "final_score" text,
  "team_record" text,
  "game_site" text,
  "attendance" real
);
SELECT "opponent" FROM "table1_24852001_2" WHERE "attendance"=16115;