an> 1 19   2</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2 20   2</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3 20   2</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4 20   2</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5 23   2</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6 24   2</span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><sp