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 | Title | Directed by | Written by | Original airdate | Duration | Viewership |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | " Keep On Running " | Tony Dow | John Sullivan | 9September2005 | 30 minutes | 8.88 million |
| 2.0 | " A Rocky Start " | Tony Dow | John Sullivan | 16September2005 | 30 minutes | 6.34 million |
| 3.0 | " The Country Wife " | Tony Dow | John Sullivan | 23September2005 | 30 minutes | 5.86 million |
| 4.0 | " Hay Fever " | Tony Dow | John Sullivan | 30September2005 | 30 minutes | 6.33 million |
| 5.0 | " Pillow Talk " | Tony Dow | John Sullivan | 7October2005 | 30 minutes | 6.63 million |
Question:
How many people wrote the episode that had 6.34 million viewers?
Answer:
1.0