Data shown on graph is rounded from original data

When using a graph to display information, it is only showing it at 2 decimal places when the data is stored as 4 decimal places. Do they not support data over 2 decimal places? since it is all rounded up.

I dont think so.
We dont have control over the data like axis label, tooltips to cutomize for the moment.

Maybe it becomes possible if new chars are given a go?