an> 4  3.962 ± 0.042</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5  3.702 ± 0.039</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6  3.371 ± 0.022</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 7  3.165 ± 0.107</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 8    2.7 ± 0.064</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 9  2.155 ± 0.089</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 10 1.308 ± 0.056</span>
<sp