h the <code>add_trach</code> function:</p>
<div class="sourceCode" id="cb16"><pre class="sourceCode julia"><code class="sourceCode julia"><span id="cb16-1"><a href="#cb16-1" aria-hidden="true" tabindex="-1"></a>p <span class="op">=</span> make_subplots(rows<span class="op">=</span><span class="fl">2</span><span class="op">,</span> </span>
<span id="cb16-2"><a href="#cb16-2" aria-hidden="true" tabindex="-1"></a>                  cols<span class="op">=</span><span class="fl">1</span><span class="op">,</span> 