</span> 16 471.4668    6310</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 17 944.4162   10911</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 18 541.1490    7509</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 19 373.6152    8147</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 20 493.7058    7631</span>
<span class="r-in"></span>
<span class="r-in"><span class="co"># Some pre-processing</span></span>
<span class="r-in"></span>
<span class="r-in"><spa