wnward, and upper
            quantiles (where the probability is greater than 0.5) are rounded upwards.
            This behaviour ensures that if an X% quantile is requested, then <span class="emphasis"><em>at
            least</em></span> the requested coverage will be present in the central
            region, and <span class="emphasis"><em>no more than</em></span> the requested coverage
            will be present in the tails.
          </p>
<p>
            This behaviour can be changed so that the qu