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:
| Pos | No | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 1 | Emerson Fittipaldi | McLaren-Ford | 53 | 1:39:26.29 | 5 | 9 |
| 2 | 24 | James Hunt | Hesketh-Ford | 53 | + 5.91 | 6 | 6 |
| 3 | 7 | Carlos Reutemann | Brabham-Ford | 53 | + 17.06 | 3 | 4 |
| 4 | 11 | Clay Regazzoni | Ferrari | 53 | + 35.79 | 7 | 3 |
| 5 | 4 | Patrick Depailler | Tyrrell-Ford | 53 | + 54.25 | 8 | 2 |
| 6 | 12 | Niki Lauda | Ferrari | 53 | + 1:19.65 | 4 | 1 |
| 7 | 28 | Mark Donohue | Penske-Ford | 52 | + 1 Lap | 16 |  |
| 8 | 6 | Jacky Ickx | Lotus-Ford | 52 | + 1 Lap | 18 |  |
| 9 | 9 | Vittorio Brambilla | March-Ford | 52 | + 1 Lap | 12 |  |
| 10 | 22 | Graham Hill | Lola-Ford | 52 | + 1 Lap | 21 |  |
| 11 | 3 | Jody Scheckter | Tyrrell-Ford | 52 | + 1 Lap | 9 |  |
| 12 | 16 | Tom Pryce | Shadow-Ford | 51 | Transmission | 14 |  |
| 13 | 23 | Rolf Stommelen | Lola-Ford | 51 | + 2 Laps | 19 |  |
| 14 | 2 | Jochen Mass | McLaren-Ford | 50 | + 3 Laps | 13 |  |
| Ret | 8 | Carlos Pace | Brabham-Ford | 46 | Engine | 2 |  |
| NC | 20 | Arturo Merzario | Williams-Ford | 44 | Not Classified | 20 |  |
| Ret | 27 | Mario Andretti | Parnelli-Ford | 27 | Transmission | 10 |  |
| Ret | 14 | Mike Wilds | BRM | 24 | Engine | 22 |  |
| Ret | 5 | Ronnie Peterson | Lotus-Ford | 15 | Engine | 11 |  |
| Ret | 21 | Jacques Laffite | Williams-Ford | 15 | Gearbox | 17 |  |
| Ret | 30 | Wilson Fittipaldi | Fittipaldi-Ford | 12 | Accident | 23 |  |
| DSQ | 18 | John Watson | Surtees-Ford | 6 | Disqualified | 15 |  |
| DNS | 17 | Jean-Pierre Jarier | Shadow-Ford | 0 | Transmission | 1 |  |
Question:
how many fewer laps did carlos pace complete than jochen mass?
Answer:
4