aN</td>
      <td>NaN</td>
      <td>NaN</td>
      <td>NaN</td>
      <td>259.0</td>
      <td>Ref.</td>
    </tr>
    <tr>
      <th>1</th>
      <td>embark_town</td>
      <td>Queenstown</td>
      <td>0.057027</td>
      <td>0.464428</td>
      <td>0.162742</td>
      <td>6.902284e-04</td>
      <td>28.0</td>
      <td>0.16 (0.06, 0.46)</td>
    </tr>
    <tr>
      <th>2</th>
      <td>embark_town</td>
      <td>Southampton</td>
      <td>0.229654</td>
      <td>0.581167</td>
      <td>0.365332</td>
  