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 Number | Air Date | Guest Host | Musical Guest (Song performed) | "Coat of Cash" Wearing Celebrity |
| --- | --- | --- | --- | --- |
| 1.0 | 1 June 2007 | David Walliams | Mutya Buena ( Real Girl ) | Pete Bennett |
| 2.0 | 8 June 2007 | Chris Moyles | The Twang ( Either Way ) | Aled Haydn Jones |
| 3.0 | 15 June 2007 | Sharon Osbourne | Calvin Harris ( The Girls ) | Ben James-Ellis |
| 4.0 | 22 June 2007 | Melanie C | The Enemy ( Had Enough ) | Shabnam Paryani |
| 5.0 | 29 June 2007 | Lily Allen | Mark Ronson and Lily Allen ( Oh My God ) | Seány O'Kane |
| 6.0 | 6 July 2007 | Paula Abdul | Avril Lavigne ( Hot ) | Billi Bhatti |
| 7.0 | 13 July 2007 | Beth Ditto | Kate Nash ( Foundations ) | Laura Williams |
| 8.0 | 20 July 2007 | Rupert Everett | Manic Street Preachers ( Autumnsong ) | Les Dennis |
| 9.0 | 27 July 2007 | John Barrowman | The Coral ( Who's Gonna Find Me ) | Nicky Maxwell |
| 10.0 | 3 August 2007 | Joanna Lumley | Amy Macdonald ( Mr Rock & Roll ) | Charley Uchea |
| 11.0 | 10 August 2007 | David Gest | Hard-Fi ( Suburban Knights ) | Shanessa Reilly |
| 12.0 | 17 August 2007 | Kanye West | Kanye West ( Stronger ) | Amy Alexandra |
| 13.0 | 24 August 2007 | Kim Cattrall | Rihanna ( Shut Up and Drive ) | Gerry Stergiopoulos |
| 14.0 | 31 August 2007 | Cilla Black | Reverend and the Makers ( He Said He Loved Me ) | Kara-Louise Horne and Tracey Barnard |
Question:
What is the lowest of  Episode Number that has a Air Date on 20 july 2007?
Answer:
8.0