What is the average number lost with a difference of -16, 19 points, and more than 24 against?
CREATE TABLE "torneo_apertura_opening_tournament" (
  "team" text,
  "points" real,
  "played" real,
  "drawn" real,
  "lost" real,
  "against" real,
  "diff" real
);
SELECT AVG("lost") FROM "torneo_apertura_opening_tournament" WHERE "diff">-16 AND "points"=19 AND "against">24;