Results of different metallicity diagnostics at the SN location using PYMCZ (Bianco et al. 2016). PYMCZ calculates the metallicity probability distribution for a given set of line fluxes with associated errors. For each metallicity diagnostic shown the black horizontal line corresponds to the medium value of the probability distribution, and the interquartile range is indicated by the orange box. The blue dashed lines represent the minimum and maximum of the distribution excluding outliers. The range in solar oxygen abundances reported in the literature is indicated by the gray region.