CREATE TABLE table_27977 ("#" 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 minimum ITV1 ranking for the episode having viewership of 5.42 million?
SELECT MIN("ITV1 weekly ranking") FROM table_27977 WHERE "Viewers (millions)" = '5.42'
SELECT MIN("ITV1 weekly ranking") FROM "table_27977" WHERE "Viewers (millions)" = '5.42'