pan class="n">ntot</span>
         <span class="n">jr2</span> <span class="o">=</span> <span class="n">jcol</span><span class="p">(</span><span class="n">j</span><span class="p">)</span>
         <span class="n">ir2</span> <span class="o">=</span> <span class="n">irow</span><span class="p">(</span><span class="n">j</span><span class="p">)</span>
         <span class="k">if</span> <span class="p">(</span> <span class="p">(</span><span class="n">jr2</span> <span class="o">/=</span> <span class="n">jr1</span><