Head to Head Brabham-BRM driver comparison for 1964 season.
[{'label': 'Jo Siffert', 'data': [12, 16, 17, 10, 12, 13, 10, 10]}, {'label': 'Jo Bonnier', 'data': [6, None, 10, 11, None, None, None, None]}, {'label': 'Ian Raby', 'data': [None, None, 26, None, None, 31, None, None]}, {'label': 'Jochen Rindt', 'data': [None, None, None, None, 26, None, None, None]}, {'label': 'Giacomo Russo', 'data': [None, None, None, None, None, 34, None, None]}, {'label': 'Hap Sharp', 'data': [None, None, None, None, None, None, 29, 28]}]