line chart</a>.
                  </li>
                  <br />
                  <li>
                    The dataset provides the upper and lower bounds of the
                    confidence interval. Column names are
                    <code>CI_right</code> and <code>CI_left</code>.
                  </li>
                  <br />
                  <li>
                    It is thus possible to use <code>d3.area()</code> to add the
                    confidence interval around the line.
             