<th> 4/2015</th>
<th> 10/2015</th>
<th> 1/2016</th>
<th> 4/2016</th>
<th> 10/2016</th>
<th> 4/2017</th>
<th> 10/20162017</th>
</tr>
<tr>
<td> <5 ug/L Se</td>
<td> <5 ug/L Se </td>
<td><5 ug/L Se </td>
<td> <5 ug/L Se </td>
<td> ug/L Se</td>
<td> ug/L Se </td>
<td> ug/L Se </td>
<td> ug/L Se </td><td> ug/L Se </td><td> ug/L Se </td>
<tr>
<td> 326C </td>
<td> ug/L Se </td>
<td> ug/L Se </td>
<td> ug/L Se </td>
<td> ug/L Se </td>
<td> ug/L Se </td>
<td> <5 ug/L Se </td>
<td> 6.9 ug/L Se </td>
<td> 7.8 ug/L Se </td>
<td> <5 ug/L Se </td>
<td> <5 ug/L Se </td>
<td> <5 ug/L Se </td>
<td> <5 ug/L Se </td>
<td> ug/L Se </td>
<td> ug/L Se </td>
<td> ug/L Se </td>