Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Swimming at the 2008 Summer Olympics – Men's 400 metre freestyle
Table title:
Final
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Rank </th><th colspan=1 rowspan=1 > Lane </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Nationality </th><th colspan=1 rowspan=1 > Time </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > Park Tae-Hwan </td><td colspan=1 rowspan=1 > South Korea </td><td colspan=1 rowspan=1 > 3:41.86 </td><td colspan=1 rowspan=1 > AS </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > Zhang Lin </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > 3:42.44 </td><td colspan=1 rowspan=1 > NR </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > Larsen Jensen </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > 3:42.78 </td><td colspan=1 rowspan=1 > AM </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > 7 </td><td class="highlighted"  colspan=1 rowspan=1 > Peter Vanderkaay </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 3:43.11 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > 1 </td><td class="highlighted"  colspan=1 rowspan=1 > Oussama Mellouli </td><td class="highlighted"  colspan=1 rowspan=1 > Tunisia </td><td class="highlighted"  colspan=1 rowspan=1 > 3:43.45 </td><td class="highlighted"  colspan=1 rowspan=1 > AF </td></tr>
<tr> <td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > Grant Hackett </td><td colspan=1 rowspan=1 > Australia </td><td colspan=1 rowspan=1 > 3:43.84 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > Yuri Prilukov </td><td colspan=1 rowspan=1 > Russia </td><td colspan=1 rowspan=1 > 3:43.97 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > Nikita Lobintsev </td><td colspan=1 rowspan=1 > Russia </td><td colspan=1 rowspan=1 > 3:48.29 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
By how much did Peter Vanderkaay secure the fourth place ahead of Tunisia's Oussama Mellouli and what record did Oussama Mellouli establish?
Answer:
Peter Vanderkaay delivered a swim with a fourth-place effort in 3:43.11, 0.35 of a second ahead of Tunisia's Oussama Mellouli who established a African record of 3:43.45.