  4</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4:  21.4     6   258   110  3.08 3.215 19.44     1     0     3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5:  18.7     8   360   175  3.15 3.440 17.02     0     0     3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6:  18.1     6   225   105  2.76 3.460 20.22     1     0     3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5 variable(s) not shown: [carb &lt;num&gt;, vs_0 &lt;num&gt;, vs_1 