user: Question: What was the highest attendance on week 13?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 4, 1983', 'New York Jets', 'L 41-29', 51004.0]
SQL:

assistant: SELECT MAX("Attendance") FROM "Table" WHERE "Week" = 13.0;