Comparison of effective temperature and surface gravities (left panel) and oxygen and silicon abundances (right panel) derived in Paper I with Fastwind and the present work with Atlas+Detail+Surface. Evolutionary tracks (corresponding to Z = 0.02) are extracted from Schaller et al. (1992). Numbers in the left panel identify the stars, as in Table 3. The blue cross in the right panel indicates the typical uncertainties in the O and Si abundances derived from individual analyses.