Comparison of the equivalent widths of HD 2796, the blue circles represent the comparison of this work and Cayrel et al. (2004), while the black triangles represent the comparison of this this work and Li et al. (2015). Note that the biggest discrepancies between our EWs and the literature data are for the strongest lines. Thus, the spectrum-synthesis approach has been used for these lines (e.g., Mg I triplets).