ass="n">maximum</span> <span class="o">-</span> <span class="n">minimum</span> <span class="o">/</span> <span class="mf">10.0</span>
  <span class="n">var</span> <span class="o">=</span> <span class="n">var</span><span class="o">.</span><span class="n">rename</span><span class="p">(</span>
      <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="mi">0</span> <span class="p">:</span> <span class="s1">&#39;Variances&#39;</span><span class="p">})</span>
  <span class="