The Header Graph, adopted from 15V, is a very useful function as it allows you to grasp the rough shape and distribution of Variables in the Data Table.
However, if the number of digits is 4 or more, it is expressed as an abbreviated form.
Abbreviated expressions are familiar to some people, but not to many others.
1. It is better to express numbers in their normal form rather than abbreviated form.
2. If not, then (to the extent possible) user formatting should be possible.

Thanks
Ikju