HTML5 specification isn’t saying there can be only one <TBODY> section. Your code is OK. One more example:
<table>
<thead>
<tr>
<th>Fruits</th>
<th>Vitamin A</th>
<th>Vitamin C</th>
</tr>
</thead>
<tbody id="section1">
<tr>
<th>Apples</th>
<td>98 ui</td>
<td>8.4 mg</td>
</tr>
</tbody>
<tbody id="section2">
<tr>
<th>Oranges</th>
<td>295 ui</td>
<td>69.7 mg</td>
</tr>
<tr>
<th>Bananas</th>
<td>76 ui</td>
<td>10.3 mg</td>
</tr>
</tbody>
</table>