*** do_average_coords(): *DIFFERENT* model 3 Res HIS26 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 5 Res HIS26 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 12 Res HIS26 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 13 Res HIS26 Atom  HD1 
 *** do_average_coords(): Expect wrong values