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:
Nadine Broersen
Table title:
Competition record
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Event </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <th colspan=6 rowspan=1 > Representing the Netherlands </th></tr>
<tr> <td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > European Junior Championships </td><td colspan=1 rowspan=1 > Novi Sad, Serbia </td><td colspan=1 rowspan=1 > 5th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 5456 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > 2011 </td><td colspan=1 rowspan=1 > European U23 Championships </td><td colspan=1 rowspan=1 > Ostrava, Czech Republic </td><td colspan=1 rowspan=1 > 9th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 5740 pts </td></tr>
<tr> <td colspan=1 rowspan=2 > 2012 </td><td colspan=1 rowspan=1 > Hypo-Meeting </td><td colspan=1 rowspan=1 > Gotzis, Austria </td><td colspan=1 rowspan=1 > 8th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6298 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > London, United Kingdom </td><td colspan=1 rowspan=1 > 13th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6319 pts </td></tr>
<tr> <td colspan=1 rowspan=3 > 2013 </td><td colspan=1 rowspan=1 > European Indoor Championships </td><td colspan=1 rowspan=1 > Gothenburg, Sweden </td><td colspan=1 rowspan=1 > 12th </td><td colspan=1 rowspan=1 > Pentathlon </td><td colspan=1 rowspan=1 > 3707 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > Hypo-Meeting </td><td colspan=1 rowspan=1 > Gotzis, Austria </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6345 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Moscow, Russia </td><td colspan=1 rowspan=1 > 10th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6224 pts </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=4 > 2014 </td><td colspan=1 rowspan=1 > World Indoor Championships </td><td colspan=1 rowspan=1 > Sopot, Poland </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Pentathlon </td><td colspan=1 rowspan=1 > 4830 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > Hypo-Meeting </td><td colspan=1 rowspan=1 > Gotzis, Austria </td><td colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6536 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > European Cup Combined Events Super League </td><td class="highlighted"  colspan=1 rowspan=1 > Torun, Poland </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td class="highlighted"  colspan=1 rowspan=1 > Heptathlon </td><td class="highlighted"  colspan=1 rowspan=1 > 6539 pts (PB) </td></tr>
<tr> <td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Zürich, Switzerland </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6498 pts </td></tr>
<tr> <td colspan=1 rowspan=3 > 2015 </td><td colspan=1 rowspan=1 > European Indoor Championships </td><td colspan=1 rowspan=1 > Prague, Czech Republic </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > Pentathlon </td><td colspan=1 rowspan=1 > DNF </td></tr>
<tr> <td colspan=1 rowspan=1 > Hypo-Meeting </td><td colspan=1 rowspan=1 > Gotzis, Austria </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6531 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Beijing, China </td><td colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6491 pts </td></tr>
<tr> <td colspan=1 rowspan=3 > 2016 </td><td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Amsterdam, Netherlands </td><td colspan=1 rowspan=1 > − </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > DNF </td></tr>
<tr> <td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Rio de Janeiro, Brazil </td><td colspan=1 rowspan=1 > 13th </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6300 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > Décastar </td><td colspan=1 rowspan=1 > Talence, France </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > 6377 pts </td></tr>
<tr> <td colspan=1 rowspan=2 > 2017 </td><td colspan=1 rowspan=1 > European Indoor Championships </td><td colspan=1 rowspan=1 > Belgrade, Serbia </td><td colspan=1 rowspan=1 > 5th </td><td colspan=1 rowspan=1 > Pentathlon </td><td colspan=1 rowspan=1 > 4582 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > London, United Kingdom </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > Heptathlon </td><td colspan=1 rowspan=1 > DNF </td></tr>
</table>
Question:
What was Broersen's personal best and where was it set?
Answer:
Nadine Broersen set her personal best at 6539 points winning the heptathlon in Torun (Poland) in 2014.