CREATE TABLE table_27974 ("#" FLOAT, "Airdate" CLOB, "No. of couples" FLOAT, "First couple" CLOB, "Second couple" CLOB, "Third couple" CLOB, "Fourth couple" CLOB, "Viewers  ( millions ) " CLOB, "ITV1 weekly ranking" FLOAT)

What is the maximum ITV1 weekly ranking?
SELECT MAX("ITV1 weekly ranking") FROM table_27974
SELECT MAX("ITV1 weekly ranking") FROM "table_27974"