----------</span></span>
<span><span class="co">#&gt; Coefficients:</span></span>
<span><span class="co">#&gt;             elevation     slope</span></span>
<span><span class="co">#&gt; estimate    0.8927447 0.7835628</span></span>
<span><span class="co">#&gt; lower limit 0.7115619 0.6946736</span></span>
<span><span class="co">#&gt; upper limit 1.0739275 0.8838260</span></span>
<span><span class="co">#&gt; </span></span>
<span><span class="co">#&gt; H0 : variables uncorrelated</span></span>
<span><span cla