Upper panel: MAGMA sample in the M_star–Z plane. Lower panel: MAGMA sample in the sSFR–Z plane. Metallicities are reported in PP04N2 (or T_e) units of 12 + log(O/H). In both panels, as in previous figures, the SDSS10 sample is also plotted, with 90% of the galaxies enclosed within the lowest contours; both panels also show the LVL sample (Dale et al. 2009; Kennicutt et al. 2009) as described in the text. Upper panel: the MZR from the direct-T_e determination by Andrews & Martini (2013) is also given, and its good agreement with the MAGMA PP04N2 (+T_e) metallicities suggests that the calibrations are consistent. Symbols and colors refer to different parent surveys, as indicated in the legend. The black dashed line represents the median trend of the distribution, which was calculated at different bins (see black dots); the horizontal bars indicate the widths of the bins, while vertical bars indicate the standard deviation around median values of the galaxies in the bins.