k">ENDDO</span>
<span class="k">            </span><span class="nb">sum</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">sum</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">Z</span><span class="p">(</span><span class="n">i</span><span class="p">)</span><span class="o">/</span><span class="mf">2.0_wp</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">Z</span><span class="p">(