What's the difference between x_reconstructed and x_ccf

In the merfish mouse brain dataset, what’s the difference between x(y)_reconstructed and x(y)_ccf? I can’t tell any difference in this tutorial by eye.

I am asking this question because I want to look at the cells in my own region of interest (e.g. a subset of LHA neurons within a specific anatomical region)

Kind Regards
Xinyu