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:
Large Mindoro forest mouse
Table title:
Ecology and behaviour
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Number (CMNH) </th><th colspan=1 rowspan=1 > Number (PNM) </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Site </th><th colspan=1 rowspan=1 > Altitude </th><th colspan=1 rowspan=1 > Sex and other data </th></tr>
<tr> <td colspan=1 rowspan=1 > 634 </td><td colspan=1 rowspan=1 > 3475 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > app. 1,900 m (6,200 ft) </td><td colspan=1 rowspan=1 > Male </td></tr>
<tr> <td colspan=1 rowspan=1 > 635 </td><td colspan=1 rowspan=1 > 3476 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > app. 1,900 m (6,200 ft) </td><td colspan=1 rowspan=1 > Female </td></tr>
<tr> <td colspan=1 rowspan=1 > 636 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > app. 1,900 m (6,200 ft) </td><td colspan=1 rowspan=1 > Female </td></tr>
<tr> <td colspan=1 rowspan=1 > 637 </td><td colspan=1 rowspan=1 > 3477 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > app. 1,900 m (6,200 ft) </td><td colspan=1 rowspan=1 > Male </td></tr>
<tr> <td colspan=1 rowspan=1 > 639 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > app. 1,900 m (6,200 ft) </td><td colspan=1 rowspan=1 > Male </td></tr>
<tr> <td colspan=1 rowspan=1 > 640 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > app. 1,900 m (6,200 ft) </td><td colspan=1 rowspan=1 > Male </td></tr>
<tr> <td colspan=1 rowspan=1 > 641 </td><td colspan=1 rowspan=1 > 3478 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > app. 1,900 m (6,200 ft) </td><td colspan=1 rowspan=1 > Male </td></tr>
<tr> <td colspan=1 rowspan=1 > 642 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > May 28 </td><td class="highlighted"  colspan=1 rowspan=1 > 2 </td><td class="highlighted"  colspan=1 rowspan=1 > app. 1,255 m (4,117 ft) </td><td colspan=1 rowspan=1 > Young male </td></tr>
<tr> <td colspan=1 rowspan=1 > 643 </td><td colspan=1 rowspan=1 > 3439 </td><td colspan=1 rowspan=1 > June 1 </td><td class="highlighted"  colspan=1 rowspan=1 > 2 </td><td class="highlighted"  colspan=1 rowspan=1 > app. 1,255 m (4,117 ft) </td><td colspan=1 rowspan=1 > Adult female </td></tr>
<tr> <td colspan=1 rowspan=1 > 644 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > June 4 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > app. 1,580 m (5,180 ft) </td><td colspan=1 rowspan=1 > Young male </td></tr>
<tr> <td colspan=1 rowspan=1 > 645 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > June 7 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > app. 1,580 m (5,180 ft) </td><td colspan=1 rowspan=1 > Young male </td></tr>
<tr> <td colspan=1 rowspan=1 > 646 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > June 7 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > app. 1,700 m (5,600 ft) </td><td colspan=1 rowspan=1 > Adult female </td></tr>
<tr> <td colspan=1 rowspan=1 > 647 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > June 9 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > app. 1,700 m (5,600 ft) </td><td colspan=1 rowspan=1 > Young adult male </td></tr>
<tr> <td colspan=1 rowspan=1 > 648 </td><td colspan=1 rowspan=1 > 3480 </td><td colspan=1 rowspan=1 > June 10 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > app. 1,700 m (5,600 ft) </td><td colspan=1 rowspan=1 > Adult male </td></tr>
<tr> <td colspan=1 rowspan=1 > 649 </td><td colspan=1 rowspan=1 > 3481 </td><td colspan=1 rowspan=1 > June 11 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > app. 1,700 m (5,600 ft) </td><td colspan=1 rowspan=1 > Old male </td></tr>
<tr> <td colspan=1 rowspan=1 > 650 </td><td colspan=1 rowspan=1 > 3482 </td><td colspan=1 rowspan=1 > June 12 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > app. 1,580 m (5,180 ft) </td><td colspan=1 rowspan=1 > Adult male (holotype) </td></tr>
</table>
Question:
At what altitude are Site 2's located?
Answer:
Site 2's are located at an altitude of 1,255 (4,117 ft).