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 |
| --- | --- | --- | --- | --- |
| Jackie Stewart | Tyrrell - Ford | 55.0 | 1:46:42.3 | 1.0 |
| François Cevert | Tyrrell - Ford | 55.0 | + 28.12 | 7.0 |
| Emerson Fittipaldi | Lotus - Ford | 55.0 | + 34.07 | 17.0 |
| Jo Siffert | BRM | 55.0 | + 37.17 | 6.0 |
| Chris Amon | Matra | 55.0 | + 41.08 | 9.0 |
| Reine Wisell | Lotus - Ford | 55.0 | + 1:16.02 | 15.0 |
| Jean-Pierre Beltoise | Matra | 55.0 | + 1:16.93 | 8.0 |
| John Surtees | Surtees - Ford | 55.0 | + 1:24.91 | 13.0 |
| Peter Gethin | McLaren - Ford | 54.0 | + 1 Lap | 19.0 |
| Howden Ganley | BRM | 54.0 | + 1 Lap | 16.0 |
| Rolf Stommelen | Surtees - Ford | 53.0 | + 2 Laps | 10.0 |
| Tim Schenken | Brabham - Ford | 50.0 | Oil Pressure | 14.0 |
| François Mazet | March - Ford | 50.0 | + 5 Laps | 23.0 |
| Max Jean | March - Ford | 46.0 | Not Classified | 22.0 |
| Henri Pescarolo | March - Ford | 45.0 | Gearbox | 18.0 |
| Graham Hill | Brabham - Ford | 34.0 | Oil Pipe | 4.0 |
| Andrea de Adamich | March - Alfa Romeo | 31.0 | Engine | 20.0 |
| Pedro Rodríguez | BRM | 27.0 | Ignition | 5.0 |
| Clay Regazzoni | Ferrari | 20.0 | Accident | 2.0 |
| Ronnie Peterson | March - Alfa Romeo | 19.0 | Engine | 12.0 |
| Denny Hulme | McLaren - Ford | 16.0 | Ignition | 11.0 |
| Jacky Ickx | Ferrari | 4.0 | Engine | 3.0 |
| Alex Soler-Roig | March - Ford | 4.0 | Fuel Pump | 21.0 |
Question:
what is the grid when the time/retired is 1:46:42.3?
Answer:
1.0