<colgroup>
<col width="16%">
<col width="16%">
</colgroup>
<thead><tr class="header">
<th align="center">variable1</th>
<th align="center">variable2</th>
</tr></thead>
<tbody>
<tr class="odd">
<td align="center">1</td>
<td align="center">110.2</td>
</tr>
<tr class="even">
<td align="center">3.5</td>
<td align="center">NA</td>
</tr>
<tr class="odd">
<td align="center">4</td>
<td align="center">79.1</td>
</tr>
<tr class="even">
<td align="center">9.5</td>
<td align="center">132</td>
</tr>
<tr class="odd">
<td