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:
| Series No. | Season No. | Title | Directed by | Written by | Original air date | U.K. viewers (million) |
| --- | --- | --- | --- | --- | --- | --- |
| 13.0 | 1.0 | "The Fashion Show" | Ben Palmer | Damon Beesley & Iain Morris | 13September2010 | 2.25 |
| 14.0 | 2.0 | " The Gig and the Girlfriend " | Ben Palmer | Damon Beesley & Iain Morris | 20September2010 | 2.13 |
| 15.0 | 3.0 | "Will's Dilemma" | Ben Palmer | Damon Beesley & Iain Morris | 27September2010 | 2.28 |
| 16.0 | 4.0 | "The Trip to Warwick" | Ben Palmer | Damon Beesley & Iain Morris | 4October2010 | 2.17 |
| 17.0 | 5.0 | "Home Alone" | Ben Palmer | Damon Beesley & Iain Morris | 11October2010 | 2.43 |
Question:
What's the series number of the episode seen by 2.43 million viewers in the UK?
Answer:
17.0