CREATE TABLE table_3141 ("Week" FLOAT, "Date" TEXT, "Kickoff" TEXT, "Opponent" TEXT, "Final score" TEXT, "Team record" TEXT, "Game site" TEXT, "Attendance" FLOAT)

How many people attended the game at Jahn-sportpark?
SELECT MIN("Attendance") FROM table_3141 WHERE "Game site" = 'Jahn-Sportpark'
SELECT MIN("Attendance") FROM "table_3141" WHERE "Game site" = 'Jahn-Sportpark'