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:
| Rank by average | Place | Couple | Number of Dances | Total Points | Average |
| --- | --- | --- | --- | --- | --- |
| 1.0 | 1.0 | Ray & Maria | 11.0 | 300.5 | 27.3 |
| 2.0 | 3.0 | Jessica & Pavel | 11.0 | 260.5 | 23.7 |
| 3.0 | 5.0 | Zoe & Matt | 8.0 | 171.5 | 21.4 |
| 4.0 | 2.0 | Donal & Florentine | 11.0 | 213.5 | 19.4 |
| 5.0 | 6.0 | Roxanne & Daniel | 7.0 | 123.0 | 17.6 |
| 6.0 | 7.0 | Melinda & Fred | 6.0 | 103.5 | 17.3 |
| 7.0 | 10.0 | Michael & Melanie | 3.0 | 50.5 | 16.8 |
| 8.0 | 8.0 | Ellery & Frankie | 5.0 | 80.0 | 16.0 |
| 9.0 | 4.0 | Coleen & Stuart | 9.0 | 143.5 | 15.9 |
| 10.0 | 11.0 | Jeremy & Darya | 2.0 | 31.0 | 15.5 |
| 11.0 | 13.0 | Graeme & Kristina | 1.0 | 14.5 | 14.5 |
| 12.0 | 12.0 | Gemma & Andrei | 1.0 | 13.0 | 13.0 |
Question:
What is the couples name where the average is 15.9?
Answer:
Coleen & Stuart