CREATE TABLE table_78455 ("League" CLOB, "Sport" CLOB, "Season" CLOB, "Total attendance" CLOB, "Average attendance" FLOAT)

What was the highest average attendance in the 2009 season?
SELECT MAX("Average attendance") FROM table_78455 WHERE "Season" = '2009'
SELECT MAX("Average attendance") FROM "table_78455" WHERE "Season" = '2009'