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:
| Rank | Artist | Album | Peak position | Sales | Certification |
| --- | --- | --- | --- | --- | --- |
| 1.0 | Lady Gaga | The Fame | 1.0 | 560000.0 | 7x Platinum |
| 2.0 | Taylor Swift | Fearless | 1.0 | 480000.0 | 6x Platinum |
| 3.0 | Kings of Leon | Only by the Night | 2.0 | 320000.0 | 4x Platinum |
| 4.0 | P!nk | Funhouse | 3.0 | 250000.0 | 2x Platinum |
| 5.0 | Beyoncé Knowles | I Am... Sasha Fierce | 6.0 | 240000.0 | 3x Platinum |
| 6.0 | Britney Spears | Circus | 1.0 | 240000.0 | 3x Platinum |
| 7.0 | Guns N' Roses | Chinese Democracy | 2.0 | 240000.0 | 3x Platinum |
| 8.0 | Metallica | Death Magnetic | 1.0 | 240000.0 | 3x Platinum |
| 9.0 | Katy Perry | One of the Boys | 6.0 | 200000.0 | 2x Platinum |
| 10.0 | Lil Wayne | Tha Carter III | 1.0 | 160000.0 | 2x Platinum |
Question:
What was the highest peak position for the album one of the boys?
Answer:
6.0