Ba, Mg, and Mn NLTE abundance corrections in dex for all 22 model atmospheres in Table 2 and transitions in Table 1. The abundance correction is coded in colour and marker size. For Mn the lines are grouped as multiplets, the average correction per multiplet is shown here. The LTE reference is chosen to be a common measured abundance in GC’s, that is [Ba/Fe] = −0.2, [Mn/Fe] = −0.4, [Mg/Fe] = +0.4.