*** do_average_coords(): *DIFFERENT* model 3 Res HIS96 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 4 Res HIS96 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 7 Res HIS96 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 8 Res HIS96 Atom  HD1 
 *** do_average_coords(): Expect wrong values