owth-type-groups</p></td>
    </tr>
    <tr>
      <th>MKMat</th>
      <td><p>a matrix of M/K for each GTG and length-class</p></td>
    </tr>
    <tr>
      <th>MK</th>
      <td><p>the M/K value</p></td>
    </tr>
    <tr>
      <th>Linf</th>
      <td><p>the Linf value for the population as a hole</p></td>
    </tr>
    <tr>
      <th>ngtg</th>
      <td><p>the number of growth-type-groups</p></td>
    </tr>
    <tr>
      <th>recP</th>
      <td><p>a vector of recruitment by GTG</p></td>
    </tr>
    