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. | Episode No. | Title | Directed by | Written by | UK Ratings (BBC2 Rank) | Original air date |
| --- | --- | --- | --- | --- | --- | --- |
| 6.0 | 1.0 | "London to Antwerp " | David Symonds | n/a | 1.96m (16) | 5June2011 |
| 6.0 | 2.0 | " Devon and Cornwall " | Paul Barnett | n/a | 3.05m (6) | 26June2011 |
| 6.0 | 3.0 | "The Netherlands" | David Symonds | n/a | 2.16m (12) | 19June2011 |
| 6.0 | 4.0 | " The Western Isles and Shetland " | Michael Burke | n/a | 2.94m (5) | 3July2011 |
| 6.0 | 5.0 | "Wales: Border to Border" | Ross Young | n/a | 2.27m (5) | 10July2011 |
Question:
How many directors worked on the episode with 2.27m (5) is the ratings?
Answer:
1.0