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 | 70.0 | 1:42:13.43 | 6.0 |
| François Cevert | Tyrrell - Ford | 70.0 | + 31.84 | 4.0 |
| Emerson Fittipaldi | Lotus - Ford | 70.0 | + 2:02.79 | 9.0 |
| Andrea de Adamich | Brabham - Ford | 69.0 | + 1 Lap | 18.0 |
| Niki Lauda | BRM | 69.0 | + 1 Lap | 14.0 |
| Chris Amon | Tecno | 67.0 | + 3 Laps | 15.0 |
| Denny Hulme | McLaren - Ford | 67.0 | +3 Laps | 2.0 |
| Carlos Pace | Surtees - Ford | 66.0 | +4 Laps | 8.0 |
| Graham Hill | Shadow - Ford | 65.0 | +5 Laps | 23.0 |
| Clay Regazzoni | BRM | 63.0 | Accident | 12.0 |
| Mike Beuttler | March - Ford | 63.0 | Accident | 20.0 |
| Jean-Pierre Jarier | March - Ford | 60.0 | Accident | 16.0 |
| Jean-Pierre Beltoise | BRM | 56.0 | Not classified | 5.0 |
| Wilson Fittipaldi | Brabham - Ford | 46.0 | Engine | 19.0 |
| Ronnie Peterson | Lotus - Ford | 42.0 | Accident | 1.0 |
| Peter Revson | McLaren - Ford | 33.0 | Accident | 10.0 |
| Howden Ganley | Iso Marlboro - Ford | 16.0 | Accident | 21.0 |
| Carlos Reutemann | Brabham - Ford | 14.0 | Engine | 7.0 |
| George Follmer | Shadow - Ford | 13.0 | Throttle | 11.0 |
| Jackie Oliver | Shadow - Ford | 11.0 | Accident | 22.0 |
| Jacky Ickx | Ferrari | 6.0 | Oil pump | 3.0 |
| Nanni Galli | Iso Marlboro - Ford | 6.0 | Engine | 17.0 |
| Mike Hailwood | Surtees - Ford | 4.0 | Accident | 13.0 |
Question:
What is the average grid with brm and under 63 laps?
Answer:
5.0