What is the byes for Woorineen when losses are more than 13?
CREATE TABLE "2011_ladder" (
  "central_murray" text,
  "wins" real,
  "byes" real,
  "losses" real,
  "draws" real,
  "against" real
);
SELECT SUM("byes") FROM "2011_ladder" WHERE "central_murray"='woorineen' AND "losses">13;