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:
Line 3 (Shenzhen Metro)
Table title:
Second stage
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Segment </th><th colspan=1 rowspan=1 > Commencement </th><th colspan=1 rowspan=1 > Length </th><th colspan=1 rowspan=1 > Station(s) </th><th colspan=1 rowspan=1 > Name </th></tr>
<tr> <td colspan=1 rowspan=1 > Caopu — Shuanglong </td><td colspan=1 rowspan=1 > 28 December 2010 </td><td class="highlighted"  colspan=1 rowspan=1 > 25.138 km (15.62 mi) </td><td class="highlighted"  colspan=1 rowspan=1 > 16 </td><td class="highlighted"  colspan=1 rowspan=1 > Phase 1 (elevated section) </td></tr>
<tr> <td colspan=1 rowspan=1 > Yitian — Caopu </td><td colspan=1 rowspan=1 > 28 June 2011 </td><td colspan=1 rowspan=1 > 16.522 km (10.27 mi) </td><td colspan=1 rowspan=1 > 14 </td><td colspan=1 rowspan=1 > Phase 1 (underground section) & Phase 2 </td></tr>
</table>
Question:
How big was the first phase of line 3?
Answer:
Line 3's first phase has 16 stations, with a length of 25.138 km (15.620 mi).