Regular Mesh of 3-D model

Hi,everyone!
If there is a 3-D model, and I make a Regular Mesh in default x-y plane, what is the theory of making the statistic of tally ?
For example, the tally of regular mesh is ‘heating-local’, Is the ‘cell(1,1) heating-local’ made of the sum of the whole z direction?
Best Wishes!

I have tried to set the geometry parameter from 10 to 1, the result proved what I thought. :slight_smile: