lor: #BCBCBC;">1</span>     0        17.1</span>
<span class="co">## <span style="color: #BCBCBC;">2</span>     1        24.4</span></code></pre>
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<p>And the <strong>data.table</strong> equivalent.</p>
<div class="sourceCode" id="cb3"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span class="kw"><a href="https://rdrr.i