What is the largest number for tropical Lows for the 1990–91 season with more than 10 tropical cyclones?
CREATE TABLE "1990s" (
  "season" text,
  "tropical_lows" real,
  "tropical_cyclones" real,
  "severe_tropical_cyclones" real,
  "strongest_storm" text
);
SELECT MAX("tropical_lows") FROM "1990s" WHERE "season"='1990–91' AND "tropical_cyclones">10;