What is the low number of top 25s in an event with over 15 appearances?
CREATE TABLE "summary" (
  "tournament" text,
  "wins" real,
  "top_5" real,
  "top_10" real,
  "top_25" real,
  "events" real,
  "cuts_made" real
);
SELECT MIN("top_25") FROM "summary" WHERE "events">15;