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:
| Name | Team | Laps | Time/Retired | Grid | Points |
| --- | --- | --- | --- | --- | --- |
| Garth Tander | Holden Racing Team | 31.0 | 50:19.8503 | 1.0 | 100.0 |
| Will Davison | Jim Beam Racing | 31.0 | + 6.4s | 6.0 | 92.0 |
| Jamie Whincup | Team Vodafone | 31.0 | + 7.2s | 4.0 | 86.0 |
| Rick Kelly | HSV Dealer Team | 31.0 | + 9.4s | 3.0 | 80.0 |
| James Courtney | Stone Brothers Racing | 31.0 | + 10.9s | 7.0 | 74.0 |
| Mark Skaife | Holden Racing Team | 31.0 | + 14.0s | 2.0 | 68.0 |
| Craig Lowndes | Team Vodafone | 31.0 | + 14.6s | 11.0 | 64.0 |
| Lee Holdsworth | Garry Rogers Motorsport | 31.0 | + 15.8s | 8.0 | 60.0 |
| Greg Murphy | Tasman Motorsport | 31.0 | + 19.3s | 13.0 | 56.0 |
| Mark Winterbottom | Ford Performance Racing | 31.0 | + 19.6s | 15.0 | 52.0 |
| Russell Ingall | Supercheap Auto Racing | 31.0 | + 37.3s | 22.0 | 48.0 |
| Jason Richards | Tasman Motorsport | 31.0 | + 38.6s | 12.0 | 46.0 |
| Todd Kelly | Jack Daniel's Racing | 31.0 | + 41.8s | 18.0 | 44.0 |
| Fabian Coulthard | Glenfords Racing | 31.0 | + 44.9s | 14.0 | 42.0 |
| Cameron McConville | Brad Jones Racing | 31.0 | + 47.2s | 5.0 | 40.0 |
| Paul Dumbrell | HSV Dealer Team | 31.0 | + 36.5s | 9.0 | 38.0 |
| Shane Van Gisbergen | Stone Brothers Racing | 31.0 | + 47.5s | 10.0 | 36.0 |
| Paul Morris | Team Sirromet Wines | 31.0 | + 40.2s | 25.0 | 34.0 |
| Shane Price | Jack Daniel's Racing | 31.0 | + 48.5s | 20.0 | 32.0 |
| Jason Bright | Britek Motorsport | 31.0 | + 50.2s | 17.0 | 30.0 |
| Steven Johnson | Jim Beam Racing | 31.0 | + 50.3s | 16.0 | 28.0 |
| Andrew Jones | Brad Jones Racing | 31.0 | + 52.8s | 21.0 | 26.0 |
| Tony D'Alberto | Rod Nash Racing | 31.0 | + 53.8s | 24.0 | 24.0 |
| Andrew Thompson | Paul Weel Racing | 31.0 | + 72.4s | 26.0 | 22.0 |
| Michael Caruso | Garry Rogers Motorsport | 31.0 | + 88.7s | 23.0 | 20.0 |
| Marcus Marshall | Britek Motorsport | 30.0 | + 1 lap | 28.0 | 18.0 |
| Steven Richards | Ford Performance Racing | 30.0 | + 1 lap | 19.0 | 16.0 |
| Chris Pither | Team Kiwi Racing | 30.0 | + 1 lap | 27.0 | 14.0 |
Question:
When did grid 8 finish?
Answer:
+ 15.8s