Notes. Column descriptions: λ: wavelength. E_low: lower level energy. “Waals”: parameters used to calculate line broadening due to collisions with neutral hydrogen. Integer component: broadening cross-section at a velocity of 10⁴ m s^-1 in atomic units. Fractional component: velocity parameter (see Barklem et al. 2000). If zero, the Unsöld approximation was used. “Ref”: reference code for the gf-values (see below). The remaining columns are headed by a label for each group defined in the text and the number of stars in parantheses. The columns give the minimum and maximum standard deviations of the average line abundances and the minimum and maximum number of abundances averaged for each line for each group.

Reference. 102: Bard et al. (1991); Bard & Kock (1994); Blackwell et al. (1979a,b, 1982a,b, 1995); O’Brian et al. (1991). 114: Bridges & Kornblith (1974); Fuhr & Wiese (2006). 129: Garz & Kock (1969); Fuhr et al. (1988). 156: May et al. (1974). 167: Richter & Wulff (1970); Fuhr et al. (1988). 186: Wolnik et al. (1970); Fuhr et al. (1988). 187: Wolnik et al. (1971); Fuhr et al. (1988).