Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Driver | Constructor | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Jacky Ickx | Ferrari | 14.0 | 1:42:12.3 | 1.0 |
| Clay Regazzoni | Ferrari | 14.0 | +48.3 | 7.0 |
| Ronnie Peterson | March - Ford | 14.0 | + 1:06.7 | 4.0 |
| Howden Ganley | BRM | 14.0 | + 2:20.2 | 18.0 |
| Brian Redman | McLaren - Ford | 14.0 | + 2:35.7 | 19.0 |
| Graham Hill | Brabham - Ford | 14.0 | + 2:59.6 | 15.0 |
| Wilson Fittipaldi | Brabham - Ford | 14.0 | + 3:00.1 | 21.0 |
| Mike Beuttler | March - Ford | 14.0 | + 5:10.7 | 27.0 |
| Jean-Pierre Beltoise | BRM | 14.0 | + 5:20.2 | 13.0 |
| François Cevert | Tyrrell - Ford | 14.0 | + 5:43.7 | 5.0 |
| Jackie Stewart | Tyrrell - Ford | 13.0 | Collision | 2.0 |
| Arturo Merzario | Ferrari | 13.0 | + 1 Lap | 22.0 |
| Andrea de Adamich | Surtees - Ford | 13.0 | + 1 Lap | 20.0 |
| Tim Schenken | Surtees - Ford | 13.0 | + 1 Lap | 12.0 |
| Chris Amon | Matra | 13.0 | + 1 Lap | 8.0 |
| Carlos Pace | March - Ford | 11.0 | Not classified | 11.0 |
| Emerson Fittipaldi | Lotus - Ford | 10.0 | Gearbox | 3.0 |
| Henri Pescarolo | March - Ford | 10.0 | Accident | 9.0 |
| Denny Hulme | McLaren - Ford | 8.0 | Engine | 10.0 |
| Mike Hailwood | Surtees - Ford | 8.0 | Suspension | 16.0 |
| Carlos Reutemann | Brabham - Ford | 6.0 | Differential | 6.0 |
| Rolf Stommelen | March - Ford | 6.0 | Electrical | 14.0 |
| Dave Walker | Lotus - Ford | 6.0 | Oil Leak | 23.0 |
| Niki Lauda | March - Ford | 4.0 | Oil Leak | 24.0 |
| Derek Bell | Tecno | 4.0 | Engine | 25.0 |
| Dave Charlton | Lotus - Ford | 4.0 | Physical | 26.0 |
| Reine Wisell | BRM | 3.0 | Engine | 17.0 |
Question:
What is the highest number of laps when the Time/Retired is differential?
Answer:
6.0