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 | Air Date | Team Swash | Team guest captain | Team Coxy |
| --- | --- | --- | --- | --- |
| 1.0 | 10 January 2010 | Joe Swash | Christopher Biggins | Sara Cox |
| 2.0 | 10 January 2010 | Joe Swash | Stephen K Amos | Sara Cox |
| 3.0 | 17 January 2010 | Joe Swash | Mel Giedroyc | Sara Cox |
| 4.0 | 17 January 2010 | Joe Swash | John Bishop | Sara Cox |
| 5.0 | 24 January 2010 | Joe Swash | Joe Pasquale | Sara Cox |
| 6.0 | 24 January 2010 | Joe Swash | Gail Porter | Sara Cox |
| 7.0 | 31 January 2010 | Joe Swash | Jeff Brazier | Sara Cox |
| 8.0 | 31 January 2010 | Joe Swash | Michelle Collins | Sara Cox |
| 9.0 | 7 February 2010 | Joe Swash | Liz McClarnon | Sara Cox |
Question:
What was the air date when the team guest captain was john bishop?
Answer:
17 January 2010