Comparison of the observed spectra and the supertemplates in λ4Fλ to examine the intrinsic photospheric absorption features in the target stars. The symbols are the same as in the left panels of Fig. 3. (a) NPM1 +65 542, (b) NPM1 +65 451, (c) NPM1 +68 422, (d) HD 238928, (e) HD 238803, and (f) NPM1 +64 504.