pecies min.TL    int slope</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 25 Bluegill      3 -3.371 3.316</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co">#===== Find equation for Cutthroat Trout, demonstrating use of group</span></span></span>
<span class="r-in"><span><span class="fu">wsVal</span><span class="op">(</span><span class="st">"Cutthroat Trout"</span>,group<span class="op">=</span><span class="st">"lotic"</span><span class="op">)</span></spa