What is the highest goals for the position after 10, a goal difference less than -24, and played more than 30 times?
CREATE TABLE "group_ii" (
  "position" real,
  "played" real,
  "points" real,
  "wins" real,
  "draws" real,
  "losses" real,
  "goals_for" real,
  "goals_against" real,
  "goal_difference" real
);
SELECT MAX("goals_for") FROM "group_ii" WHERE "position">10 AND "goal_difference"<-24 AND "played">30;