2.547  </span></span>
<span><span class="co">## fev$height:     654     0   61.14     5.704     46.00     57.00     61.50  </span></span>
<span><span class="co">##                75%       Max     </span></span>
<span><span class="co">##    fev$fev:     3.118     5.793  </span></span>
<span><span class="co">## fev$height:     65.50     74.00</span></span></code></pre>
</div>
<div class="section level2">
<h2 id="descriptive-statistics-for-strata">Descriptive statistics for strata<a class="anchor" aria-label=