[Ni/Fe] and [Cr/Fe] as a function of [Fe/H]. As in Fig. 8, black dots show the field stars in our sample and the red star highlights the GC H4 star. Contours show the pattern of MW disc and halo stars (data from Venn et al. 2004; Roederer et al. 2014; Reddy et al. 2003, and Bensby et al. 2003). Open circles indicate objects for which SP_Ace could not find upper and lower abundance limits. Gray open squares are Fornax field star measurements from Letarte et al. (2010).