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:
| Rider | Manufacturer | Laps | Time | Grid |
| --- | --- | --- | --- | --- |
| Valentino Rossi | Yamaha | 24.0 | 43:09.599 | 4.0 |
| Casey Stoner | Ducati | 24.0 | +1.943 | 2.0 |
| Dani Pedrosa | Honda | 24.0 | +4.866 | 5.0 |
| Jorge Lorenzo | Yamaha | 24.0 | +6.165 | 1.0 |
| Nicky Hayden | Honda | 24.0 | +24.593 | 3.0 |
| Loris Capirossi | Suzuki | 24.0 | +25.685 | 6.0 |
| Colin Edwards | Yamaha | 24.0 | +25.918 | 7.0 |
| Shinya Nakano | Honda | 24.0 | +26.003 | 9.0 |
| Andrea Dovizioso | Honda | 24.0 | +26.219 | 13.0 |
| John Hopkins | Kawasaki | 24.0 | +37.131 | 11.0 |
| James Toseland | Yamaha | 24.0 | +37.574 | 10.0 |
| Randy de Puniet | Honda | 24.0 | +38.020 | 8.0 |
| Marco Melandri | Ducati | 24.0 | +39.768 | 16.0 |
| Sylvain Guintoli | Ducati | 24.0 | +45.846 | 15.0 |
| Anthony West | Kawasaki | 24.0 | +55.748 | 17.0 |
| Toni Elias | Ducati | 24.0 | +59.320 | 14.0 |
| Alex de Angelis | Honda | 24.0 | +1:12.398 | 18.0 |
| Chris Vermeulen | Suzuki | 16.0 | Retirement | 12.0 |
| Kousuke Akiyoshi | Suzuki | 0.0 | Accident | 19.0 |
Question:
Which Grid has Laps of 24, and a Rider of marco melandri?
Answer:
16.0