CREATE TABLE table_202_54 (id DECIMAL, "song" TEXT, "chinese" TEXT, "hito radio\ top 10" DECIMAL, "9+2 music\ top 15" DECIMAL, "global asia\ top 15" DECIMAL, "ufo radio\ top 15" DECIMAL, "channel [v]\ top 20" DECIMAL, "mtv taiwan\ top 20" DECIMAL, "yes 93.3\ top 20" DECIMAL)

how many weeks was the song far away on the ufo top list ?
SELECT (SELECT MAX("ufo radio\ntop 15") FROM table_202_54) - (SELECT MAX("ufo radio\ntop 15") FROM table_202_54 WHERE "ufo radio\ntop 15" <> (SELECT MAX("ufo radio\ntop 15") FROM table_202_54))
SELECT (SELECT MAX("ufo radio\ntop 15") FROM "table_202_54") - (SELECT MAX("ufo radio\ntop 15") FROM "table_202_54" WHERE "ufo radio\ntop 15" <> (SELECT MAX("ufo radio\ntop 15") FROM "table_202_54"))