[Cr/Fe] vs. [Fe/H] (upper panel) and [Ni/Fe] vs. [Fe/H] (lower panel). Chemical-evolution models with SFR of ν = 1 and 3 Gyr⁻¹ (black and blue lines respectively) overplotted on the results of the present study (yellow pentagons) and literature data: Johnson et al. (2014) (blue filled circles), Bensby et al. (2017) (red filled circles), Schultheis et al. (2017) (open red circles), Lomaeva et al. (2019) (filled orange triangles), and Lucey et al. (2022) (grey filled circles, only for Ni). Different model lines are for the same radii from the Galactic centre as in Fig. 8.