ted, if market model is <code>mean_adj</code>.
<code>regressors</code> must have the same number of components as <code>rates</code>
except cases when the same regressor is used for all securities.</p></td>
    </tr>
    <tr>
      <th>same_regressor_for_all</th>
      <td><p>logical. Should the same regressor be used for
each security? The default value is TRUE.</p></td>
    </tr>
    <tr>
      <th>market_model</th>
      <td><p>a character indicating the market model among
<code>mean_adj</code>, <code>mr