*** do_average_coords(): *DIFFERENT* model 4 Res HIS4 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 6 Res HIS4 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 8 Res HIS4 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 9 Res HIS4 Atom  HD1 
 *** do_average_coords(): Expect wrong values