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:
| Episode no. | Airdate | Viewers | BBC Three weekly ranking | Cable rank |
| --- | --- | --- | --- | --- |
| 1.0 | 21 October 2010 | 956000.0 | 3.0 | 10.0 |
| 2.0 | 28 October 2010 | 959000.0 | 4.0 | 14.0 |
| 3.0 | 4 November 2010 | 1277000.0 | 2.0 | 6.0 |
| 4.0 | 11 November 2010 | 817000.0 | 6.0 | 18.0 |
| 5.0 | 18 November 2010 | 1019000.0 | 3.0 | 11.0 |
| 6.0 | 25 November 2010 | 869000.0 | 3.0 | 23.0 |
| 7.0 | 2 December 2010 | 982000.0 | 2.0 | 19.0 |
| 8.0 | 9 December 2010 | 953000.0 | 3.0 | 12.0 |
Question:
When did episode number 6 air?
Answer:
25 November 2010