*** do_average_coords(): *DIFFERENT* model 2 Res HIS61 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 3 Res HIS61 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 8 Res HIS61 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 10 Res HIS61 Atom  HD1 
 *** do_average_coords(): Expect wrong values