ass="w"> </span><span class="mi">50</span><span class="w">      </span><span class="n">ymin</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">-</span><span class="mf">1.0_wp</span>
<span class="w">         </span><span class="n">ymax</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">1.0_wp</span>
<span class="w">         </span><span class="k">DO </span><span class="n">i</span><span class="w"> </span><span class="o">=</