What is the most number of losses for teams with 5 wins and an against value under 1607?
CREATE TABLE "2010_ladder" (
  "ntfa_div_1" text,
  "wins" real,
  "byes" real,
  "losses" real,
  "draws" real,
  "against" real
);
SELECT MAX("losses") FROM "2010_ladder" WHERE "wins"=5 AND "against"<1607;