user: Question: Which Average has a Band oF F?
Columns: ['Band', 'Value', 'Ratio', 'Ratio as %', 'Average']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['A', 'up to £40,000', '6/9', '67%', '£845']
SQL:

assistant: SELECT "Average" FROM "Table" WHERE "Band" = 'F';