class="op">(</span><span class="va">matched</span><span class="op">$</span><span class="va">REACH_meas_diff</span>, breaks <span class="op">=</span> <span class="fl">100</span>, </span>
<span>     main <span class="op">=</span> <span class="st">"Difference in measure for gages matched to the same reach."</span><span class="op">)</span></span></code></pre></div>
<p><img src="indexing_files/figure-html/analyze_index-1.png" width="576"></p>
<div class="sourceCode" id="cb4"><pre class="downlit sourceCode r">
<c