ions
Map result = Reductions.groupByColumnsAgg(vector(initAgg), vector(&quot;placement&quot;, &quot;year-month&quot;),
                                              hashmap(&quot;min-count&quot;,     Reductions.probQuantile(&quot;count&quot;, 0.0),
                                                      &quot;low-95-count&quot;,  Reductions.probQuantile(&quot;count&quot;, 0.05),
                                                      &quot;q1-count&quot;,      Reductions.probQuantile(&quot;count&quot;, 0.25),
 