CREATE TABLE table_30075 ("Player" TEXT, "Played" FLOAT, "Legs Won" FLOAT, "Legs Lost" FLOAT, "100+" FLOAT, "140+" FLOAT, "180s" FLOAT, "High Checkout" FLOAT, "3-dart Average" TEXT)

What is the highest number for 140+?
SELECT MAX("140+") FROM table_30075
SELECT MAX("140+") FROM "table_30075"