 of the column containing the standard deviation or the standard error of the response 
variable. When information is not available for one taxon, the value can be 0 or <code>NA</code>.</p></td>
    </tr>
    <tr>
      <th>Vx</th>
      <td><p>Name of the column containing the standard deviation or the standard error of the predictor 
variable. When information is not available for one taxon, the value can be 0 or <code>NA</code></p></td>
    </tr>
    <tr>
      <th>y.transf</th>
      <td><p>Transformati