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 | 21.0 | 43:06.007 | 2.0 |
| Dani Pedrosa | Honda | 21.0 | +4.008 | 1.0 |
| Andrea Dovizioso | Honda | 21.0 | +8.536 | 6.0 |
| Nicky Hayden | Honda | 21.0 | +8.858 | 4.0 |
| Shinya Nakano | Honda | 21.0 | +10.583 | 15.0 |
| Casey Stoner | Ducati | 21.0 | +13.640 | 7.0 |
| Loris Capirossi | Suzuki | 21.0 | +15.936 | 8.0 |
| Colin Edwards | Yamaha | 21.0 | +18.802 | 5.0 |
| Chris Vermeulen | Suzuki | 21.0 | +23.174 | 11.0 |
| Randy de Puniet | Honda | 21.0 | +25.516 | 9.0 |
| John Hopkins | Kawasaki | 21.0 | +27.609 | 10.0 |
| Anthony West | Kawasaki | 21.0 | +41.399 | 13.0 |
| Sylvain Guintoli | Ducati | 21.0 | +45.617 | 16.0 |
| Alex de Angelis | Honda | 21.0 | +49.003 | 17.0 |
| Toni Elias | Ducati | 21.0 | +59.139 | 19.0 |
| Marco Melandri | Ducati | 21.0 | +1:03.328 | 14.0 |
| Nobuatsu Aoki | Suzuki | 21.0 | +1:48.363 | 18.0 |
| Jorge Lorenzo | Yamaha | 12.0 | Accident | 3.0 |
| James Toseland | Yamaha | 2.0 | Accident | 12.0 |
Question:
What is the lowest Grid, when Laps is 21, when Manufacturer is Yamaha, and when Time is +18.802?
Answer:
5.0