*** do_average_coords(): *DIFFERENT* model 10 Res HIS116 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 13 Res HIS116 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 15 Res HIS116 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 18 Res HIS116 Atom  HD1 
 *** do_average_coords(): Expect wrong values