> <span class="n">create_sample_df</span><span class="p">()</span>
    <span class="n">fig</span><span class="p">,</span> <span class="n">ax0</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">subplots</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
    <span class="n">df1</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">ax</span><span class="o">=</span><span class="n">ax0</span><sp