Table 6: Sensitivity to abundance and temperature difference to changes of atmospheric parameters for the pair HD 219542.
Changes $\Delta $ Fe I $\Delta $ Fe II $\Delta $ VI $\Delta $ Fe I-Fe II $\Delta $ VI-Fe II $\Delta T_{{\rm eff}}$ $\Delta T_{{\rm eff}}$
            (Fe) (V)
$\Delta T_{{\rm eff}}$ +30 K -0.018 $\pm$ 0.008 +0.010 $\pm$ 0.013 -0.033 $\pm$ 0.024 -0.028 $\pm$ 0.016 -0.043 $\pm$ 0.027 -32 $\pm$ 17 -29 $\pm$ 18
$\Delta T_{{\rm eff}}$ -30 K +0.017 $\pm$ 0.008 -0.012 $\pm$ 0.013 +0.028 $\pm$ 0.024 +0.029 $\pm$ 0.016 +0.040 $\pm$ 0.027 +32 $\pm$ 17 +27 $\pm$ 18
$\Delta \log g$ +0.05 dex +0.002 $\pm$ 0.008 -0.019 $\pm$ 0.013 +0.001 $\pm$ 0.024 +0.021 $\pm$ 0.016 +0.020 $\pm$ 0.027 +23 $\pm$ 17 +14 $\pm$ 18
$\Delta \log g$ -0.05 dex -0.008 $\pm$ 0.008 +0.020 $\pm$ 0.013 +0.000 $\pm$ 0.024 -0.028 $\pm$ 0.016 -0.020 $\pm$ 0.027 -31 $\pm$ 17 -13 $\pm$ 18
$\Delta $ [A/H] +0.05 dex -0.006 $\pm$ 0.008 -0.016 $\pm$ 0.013 -0.001 $\pm$ 0.024 +0.010 $\pm$ 0.016 +0.015 $\pm$ 0.027 +11 $\pm$ 17 +10 $\pm$ 18
$\Delta $ [A/H] -0.05 dex +0.005 $\pm$ 0.008 +0.016 $\pm$ 0.013 +0.001 $\pm$ 0.024 -0.011 $\pm$ 0.016 -0.015 $\pm$ 0.027 -13 $\pm$ 17 -10 $\pm$ 18
$\Delta \xi $ +0.15 km s-1 +0.017 $\pm$ 0.008 +0.030 $\pm$ 0.013 +0.005 $\pm$ 0.024 -0.013 $\pm$ 0.016 -0.025 $\pm$ 0.027 -15 $\pm$ 17 -17 $\pm$ 18
$\Delta \xi $ -0.15 km s-1 -0.019 $\pm$ 0.008 -0.030 $\pm$ 0.013 -0.008 $\pm$ 0.024 +0.009 $\pm$ 0.016 +0.000 $\pm$ 0.027 +11 $\pm$ 13 +15 $\pm$ 18


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