*** do_average_coords(): *DIFFERENT* model 2 Res HIS96 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 6 Res HIS96 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 7 Res HIS96 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 10 Res HIS96 Atom  HD1 
 *** do_average_coords(): Expect wrong values