 align="left">OK</td>
<td align="left">OK</td>
<td align="left"></td>
<td align="left"></td>
</tr>
<tr class="odd">
<td align="left">Interval</td>
<td align="left">OK</td>
<td align="left">OK</td>
<td align="left">OK</td>
<td align="left"></td>
</tr>
<tr class="even">
<td align="left">Ratio</td>
<td align="left">OK</td>
<td align="left">OK</td>
<td align="left">OK</td>
<td align="left">OK</td>
</tr>
</tbody>
</table>
<p>These constraints also imply that there are certain kinds of statistics that we can comp