n.html" class="external-link">sqrt</a></span><span class="op">(</span><span class="va">fit</span><span class="op">$</span><span class="va">smoothed</span><span class="op">$</span><span class="va">V</span><span class="op">[</span><span class="fl">1</span>,<span class="fl">1</span>,<span class="op">]</span><span class="op">)</span>,</span>
<span>      type <span class="op">=</span> <span class="st">'l'</span>, col <span class="op">=</span> <span class="st">'gray'</span></span>
<span><span class="op">)</span><