Head to Head Surtees driver comparison for 1971 season.
[{'label': 'John Surtees', 'data': [15, 18, 13, 10, 13, 14, 14, 15, 17, 18, 19]}, {'label': 'Brian Redman', 'data': [7, None, None, None, None, None, None, None, None, None, None]}, {'label': 'Rolf Stommelen', 'data': [12, 19, 11, 13, 15, 15, 15, 16, 18, 19, None]}, {'label': 'Gijs van Lennep', 'data': [None, None, None, 20, None, None, None, None, None, None, None]}, {'label': 'Derek Bell', 'data': [None, None, None, None, None, 30, None, None, None, None, None]}, {'label': 'Mike Hailwood', 'data': [None, None, None, None, None, None, None, None, 16, None, 18]}, {'label': 'Sam Posey', 'data': [None, None, None, None, None, None, None, None, None, None, 49]}]