lights</span>, tail_num <span class="op">=</span> <span class="va">tailnum</span><span class="op">)</span></span></code></pre></div>
</div>
<div class="section level3">
<h3 id="add-new-columns-with-mutate_dt">Add new columns with <code>mutate_dt()</code><a class="anchor" aria-label="anchor" href="#add-new-columns-with-mutate_dt"></a>
</h3>
<div class="sourceCode" id="cb8"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="fu"><a href="../reference/mutate.html">mutate_dt</a></sp