*** do_average_coords(): *DIFFERENT* model 4 Res HIS14 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 6 Res HIS14 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 10 Res HIS14 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 15 Res HIS14 Atom  HE2 
 *** do_average_coords(): Expect wrong values