>from</span> <span class="o">=</span> <span class="k">as</span><span class="o">.</span><span class="n">Date</span><span class="p">(</span><span class="s1">&#39;2019-08-01&#39;</span><span class="p">),</span>
                  <span class="n">length</span><span class="o">.</span><span class="n">out</span> <span class="o">=</span> <span class="n">dim</span><span class="p">(</span><span class="n">GPMpolyCentroid</span><span class="o">.</span><span class="n">precipitation</span><span class="o">.</span><span cla