Differences in atmospheric parameters and elemental abundances produced by two runs adopting different effective temperatures (T_eff) and surface gravities (log g): photometric vs. spectroscopic values as listed in Table 2. The vertical axis refer to the Δ of every atmospheric parameter and chemical species ([X/Fe]) analyzed in this work. The horizontal axis refers to the . The hexagonal symbols are color coded by the S/N. The average and standard deviation around the mean of the differences is listed in each panel, and are denoted by a black line and gray shadow.