*** do_average_coords(): *DIFFERENT* model 5 Res HIS137 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 6 Res HIS137 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 7 Res HIS137 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 9 Res HIS137 Atom  HE2 
 *** do_average_coords(): Expect wrong values