Head to Head Iso Marlboro driver comparison for 1974 season.
[{'label': 'Arturo Merzario', 'data': [21, 24, 13, 14, 14, 16, None, 18, 18, 18, 19, 20, 17, 17, 17]}, {'label': 'Tom Belsø', 'data': [None, None, 31, 35, None, None, 22, None, None, 23, None, None, None, None, None]}, {'label': 'Gijs van Lennep', 'data': [None, None, None, None, 27, None, None, 28, None, None, None, None, None, None, None]}, {'label': 'Richard Robarts', 'data': [None, None, None, None, None, None, 31, None, None, None, None, None, None, None, None]}, {'label': 'Jean-Pierre Jabouille', 'data': [None, None, None, None, None, None, None, None, 44, None, None, None, None, None, None]}, {'label': 'Jacques Laffite', 'data': [None, None, None, None, None, None, None, None, None, None, 43, 42, 43, 42, 43]}]