CREATE TABLE table_16345 ("League" TEXT, "Sport" TEXT, "Country" TEXT, "Season" TEXT, "Games" FLOAT, "Average attendance" FLOAT, "Total attendance" FLOAT)

What's the average attendance of the leagues in the season of 2013?
SELECT MIN("Average attendance") FROM table_16345 WHERE "Season" = '2013'
SELECT MIN("Average attendance") FROM "table_16345" WHERE "Season" = '2013'