0);">off</span><br>
</code>
</div>
<br>
<table style="text-align: left; width: 560px;" border="0"
 cellpadding="0">
  <caption align="bottom">Figure 4.<br>
  </caption><tbody>
    <tr>
      <td style="padding:0px;"><img src="fig04.png" alt="Figure 4." title="Figure 4."
      style="border: 1px solid ; width: 560px; height: 420px;" vspace="7"></td>
    </tr>
  </tbody>
</table>
</div>
<br>
<table style="width: 600px;" border="0" cellpadding="0" cellspacing="0">
  <tbody>
    <tr>
      <t