Hi MarkyBoy49,
I support your PGE estimates and thanks for sharing.
I posted the following PGE vs Ni plot from the GAL data, along with PGE estimates based on your Ni % calculations a while back. The 3E PGE's were very similar to your estimates. I have added two additional GAL holes to the data set below since posting this August 21, 2022.
Post #: 63233110
GAL Data used in the xplot with two additional holes added
MarkyBoy49 PGE calculations
Kind regards OldGeo