'data.tree' object that can be used as an example to see how table widget looks like. Each node of 'data.tree' store attributes (dates) with some numbers.
org'data.tree' object with 7 attributes in each node, value of the leaf attributes is some random number, parents value is cumulative sum of children The attributes are:
name of the node
six consecutive months of the year (Jan-2021, Feb-2021....)