<span class="s2">&quot;Pop III Ken2022&quot;</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">rate4_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;C2&#39;</span><span class="p">,</span> <span class="n">linestyle</span><span class="o">=</span><span cla