Events are grouped by the allocation or deallocation kind, as shown here:

The Count column shows the number of events in the group. The non-aggregated columns show the value of the first problem in the group.
Similar statistics based on the band size (i.e., the allocation size range)
can be obtained by selecting , and then adding the Actual Size column using the Preferences dialog:

Statistics can also be obtained based on the backtrace field, by selecting :
