Number of events appears to be the normalised frequency to 0 decimal places.
0.7b15 - not extensively tested.
I'll take a look.
Fixed display of value for normalised histogram data point tooltip. Fixes issue #392.
→ <<cset 06b24b99fd0e>>
Ref #392 confirmed fixed. Thanks @dplatten
→ <<cset 8a8a648c814f>>
Did I set this to what you wanted? I thought on the way home that you may have wanted the normalised value displayed in the tooltip, with 2 decimal places.
No, you can see visually the normalised value - it's the real frequency that's important to get to in that circumstance. According to me anyway!