</span> 12                &lt;NA&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 14                &lt;NA&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 15                &lt;NA&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 16                &lt;NA&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/print.html" class="external-link">print</a></span><span cl