*** do_average_coords(): *DIFFERENT* model 3 Res HIS3 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 4 Res HIS3 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 5 Res HIS3 Atom  HD1 
 *** do_average_coords(): *DIFFERENT* model 6 Res HIS3 Atom  HD1 
 *** do_average_coords(): Expect wrong values