*** do_average_coords(): *DIFFERENT* model 2 Res HIS170 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 4 Res HIS170 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 6 Res HIS170 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 8 Res HIS170 Atom  HD1 
 *** do_average_coords(): Expect wrong values