Head to Head Williams driver comparison for 2004 season.
[{'label': 'Juan Pablo Montoya', 'data': [5, 3, 4, 4, 6, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5]}, {'label': 'Ralf Schumacher', 'data': [4, 7, 7, 7, 7, 7, 7, 7, 8, None, None, None, None, None, None, 11, 11, 9]}, {'label': 'Marc Gené', 'data': [None, None, None, None, None, None, None, None, None, 20, 20, None, None, None, None, None, None, None]}, {'label': 'Antônio Pizzonia', 'data': [None, None, None, None, None, None, None, None, None, None, None, 18, 15, 15, 15, None, None, None]}]