Head to Head Williams driver comparison for 2011 season.
[{'label': 'Rubens Barrichello', 'data': [16, 21, 17, 16, 17, 14, 15, 15, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17]}, {'label': 'Pastor Maldonado', 'data': [20, 23, 22, 22, 21, 21, 24, 24, 23, 21, 21, 18, 19, 19, 19, 19, 19, 19, 19]}]