t; 14 3086.35722  7881.8826</span></span>
<span><span class="co">#&gt; 15 1375.25770  3954.9489</span></span>
<span><span class="co">#&gt; 16 7903.81199 13455.4913</span></span></code></pre></div>
</div>
<div class="section level3">
<h3 id="stratified-analysis">Stratified Analysis<a class="anchor" aria-label="anchor" href="#stratified-analysis"></a>
</h3>
<p>To estimate the proportion of total lakes in each nitrogen condition
category and the total number of lakes in each nitrogen condition
category stratif