class="n">figsize</span><span class="o">=</span><span class="p">(</span><span class="mi">6</span><span class="p">,</span><span class="mi">4</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="n">z</span><span class="p">,</span> <span class="n">rate1_src</span><span class="o">*</span><span class="mf">1e9</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s1">&#39;C0&#39;<