user: Question: What was the average attendance in weeks after 16?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 7, 1980', 'at New England Patriots', 'L 34–17', 49222.0]
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Week" > 16.0;