code>Date</code> class giving the first date of
the event period.</p></td>
    </tr>
    <tr>
      <th>event_end</th>
      <td><p>an object of <code>Date</code> class giving the last date of the
event period.</p></td>
    </tr>
    </table>

    <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

    <p>A data frame of the following columns:</p><ul>
<li><p><code>date</code>: a calendar date</p></li>
<li><p><code>weekday</code>: a day of the week</p></li>
<li><p><code>percentag