ewidth</span><span class="o">=</span><span class="mi">2</span><span class="p">)</span>
        <span class="n">plt</span><span class="o">.</span><span class="n">plot</span><span class="p">([</span><span class="mi">0</span><span class="p">,</span> <span class="nb">max</span><span class="p">(</span><span class="n">xf</span><span class="p">)],</span> <span class="p">[</span><span class="n">cutoff</span><span class="p">,</span> <span class="n">cutoff</span><span class="p">],</span> <span class="s1">&#39;b&#39;<