What is the lowest Shot Pct., when Blank Ends is greater than 6?
CREATE TABLE "standings" (
  "province" text,
  "skip" text,
  "ends_won" real,
  "ends_lost" real,
  "blank_ends" real,
  "stolen_ends" real,
  "shot_pct" real
);
SELECT MIN("shot_pct") FROM "standings" WHERE "blank_ends">6;