I have interpreted power system in the 2D axis coordinates and used max/min without doubt about this function.
In this time analysis, the field was focused on the triple point when visually checked But maxpoint indicates elsewhere. I checked the triple point separately, and could confirm that it also greater than max point. Also, the value of the maximum data set was less than the value confirmed by a separate point.
I checked the electric field with ec.normE Am I mistaken about the max or field function?