an> <span class="o">=</span> <span class="p">[]</span>
<span class="n">recon_period</span> <span class="o">=</span> <span class="p">[</span><span class="mi">1801</span><span class="p">,</span> <span class="mi">2000</span><span class="p">]</span>
<span class="k">for</span> <span class="n">pobj</span> <span class="ow">in</span> <span class="n">pdb</span><span class="p">:</span>
    <span class="k">if</span> <span class="n">np</span><span class="o">.</span><span class="n">min</span><span class="p">(</span><spa