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Table 1:

Basic data of our program stars, columns ``DIB'' and ``C2'' identify sources of the 6196 Å DIB profile and of the C2 band, ``S/N'' determines the signal-to-noise ratio in the range of the spectrum near to a 6196 Å feature.
Object Name Sp/L* E(B-V)* DIB S/N C2
HD 23 180 o Per B1III 0.27 GECKO 600 BOES
HD 110 432   B2pe 0.48 FEROS 300 a
HD 147 888 $\rho$ Oph D B5V 0.47 FEROS 500 b
HD 147 889   B2V 1.07 HARPS 500 UVES
HD 148 184 $\chi$ Oph B2Vn,el 0.52 HARPS 600 UVES
HD 149 757 $\zeta$ Oph O9.5V 0.32 CES 1000 c
HD 154 368   O9.5Iab 0.73 UVES 300 UVES
HD 163 800   O7IIIf 0.60 HARPS 500 UVES
HD 169 454 V430 SCT B1Ia 0.93 UVES 400 UVES
HD 179 406 20 Aql B3V 0.33 HARPS 600 UVES
HD 204 827   B0V 1.11 BOES 300 d
* Thorburn et al. (2003), Hunter et al. (2006); a calculated by Sonnentrucker et al. (2007) using the equivalent widths of van Dishoeck & Black (1989) (Phillips system); b Sonnentrucker et al. (2007) (Mulliken system); c calculated by Sonnentrucker et al. (2007) using the equivalent widths of Hobbs & Campbell (1982) (Phillips system); d calculated in this work using the equivalent widths of Ádámkovics et al. (2003) (Phillips system).


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