Head to Head Cooper-Maserati driver comparison for 1967 season.
[{'label': 'Jo Siffert', 'data': [12, 17, 15, 17, 11, 11, 11, None, 13, 12, 12]}, {'label': 'Jo Bonnier', 'data': [15, None, None, 25, None, 27, 18, 18, 18, 15, 15]}, {'label': 'Jochen Rindt', 'data': [13, 20, 23, 11, 12, 12, 12, 14, 12, 13, None]}, {'label': 'Pedro RodrÃguez', 'data': [1, 2, 2, 2, 3, 5, 5, None, None, None, 6]}, {'label': 'Guy Ligier', 'data': [None, None, None, 19, 19, None, None, None, None, None, None]}, {'label': 'Alan Rees', 'data': [None, None, None, None, None, 20, None, None, None, None, None]}, {'label': 'Richard Attwood', 'data': [None, None, None, None, None, None, None, 24, None, None, None]}, {'label': 'Jacky Ickx', 'data': [None, None, None, None, None, None, None, None, 20, 19, None]}]