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. | Driver | Constructor | Part 1 | Grid |
| --- | --- | --- | --- | --- |
| 1 | Lewis Hamilton | McLaren - Mercedes | 1:12.563 | 1 |
| 2 | Fernando Alonso | McLaren - Mercedes | 1:12.416 | 2 |
| 3 | Felipe Massa | Ferrari | 1:12.731 | 3 |
| 4 | Kimi Räikkönen | Ferrari | 1:12.732 | 4 |
| 5 | Nick Heidfeld | BMW Sauber | 1:12.543 | 5 |
| 6 | Heikki Kovalainen | Renault | 1:12.998 | 6 |
| 7 | Sebastian Vettel | BMW Sauber | 1:12.711 | 7 |
| 8 | Jarno Trulli | Toyota | 1:13.186 | 8 |
| 9 | Mark Webber | Red Bull - Renault | 1:13.425 | 9 |
| 10 | Giancarlo Fisichella | Renault | 1:13.168 | 10 |
| 11 | David Coulthard | Red Bull - Renault | 1:13.424 | 11 |
| 12 | Ralf Schumacher | Toyota | 1:12.851 | 12 |
| 13 | Jenson Button | Honda | 1:13.306 | 13 |
| 14 | Nico Rosberg | Williams - Toyota | 1:13.128 | 14 |
| 15 | Rubens Barrichello | Honda | 1:13.203 | 15 |
| 16 | Anthony Davidson | Super Aguri - Honda | 1:13.164 | 16 |
| 17 | Alexander Wurz | Williams - Toyota | 1:13.441 | 17 |
| 18 | Takuma Sato | Super Aguri - Honda | 1:13.477 | 18 |
| 19 | Vitantonio Liuzzi | Toro Rosso - Ferrari | 1:13.484 | 19 |
| 20 | Scott Speed | Toro Rosso - Ferrari | 1:13.712 | 20 |
| 21 | Adrian Sutil | Spyker - Ferrari | 1:14.122 | 21 |
| 22 | Christijan Albers | Spyker - Ferrari | 1:14.597 | 22 |
| Source: | Source: | Source: | Source: | Source: |
Question:
What is Driver Kimi Räikkönen's number on the grid?
Answer:
4.0