user: Question: What's the lowest attendance recorded for week 15?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 3, 1978', 'at Chicago Bears', 'L 10-17', 52791.0]
SQL:

assistant: SELECT MIN("Attendance") FROM "Table" WHERE "Week" = 15.0;