code: def _parse_refraction(line, lines):
      
      split_line = line.split()
  
      energy = float(split_line[0])
      ref_ind_xx = float(split_line[1])
      ref_ind_zz = float(split_line[2])
      extinct_xx = float(split_line[3])
      extinct_zz = float(split_line[4])
  
      return {"energy": energy, "ref_ind_xx": ref_ind_xx, "ref_ind_zz": ref_ind_zz, "extinct_xx": extinct_xx,
              "extinct_zz": extinct_zz}
docs: Parse Energy [eV]  ref_ind_xx    ref_ind_zz    extinct_xx    extinct_zz