="gp">In [18]: </span><span class="n">ds</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>

<span class="go">### Create example points</span>
<span class="gp">In [19]: </span><span class="n">points_df</span> <span class="o">=</span> <span class="n">df1</span><span class="o">.</span><span class="n">loc</span><span class="p">[[</span><span class="mi">6</span><span class="p">,</span> <span class="mi">15</span><span class="p">,</span> <span class="mi">132</span><span class="