CREATE TABLE table_25502 ("Order" FLOAT, "Episode" CLOB, "Original airdate" CLOB, "Timeslot" CLOB, "Viewers  ( 100000s ) " CLOB, "Nightly rank" FLOAT, "Weekly rank" FLOAT)

What is the highest numbered nightly rank for any episode?
SELECT MAX("Nightly rank") FROM table_25502
SELECT MAX("Nightly rank") FROM "table_25502"