What inspired this wish list request? The format for small numbers in the column header histogram can be hard to follow.
What is the improvement you would like to see? All the ability to change the default format, so in this case be cale to set the decimal places to show. In the example above I would like to be able to see 0.00345 vs 3.45m.
Why is this idea important? The best part about the headers is their ability to convey info quickly, having a format that you have to think about takes away from this.