Metallicity-mass relationship using the metallicity inferred ignoring the [S II] lines. The thick gray curve shows the 4th order polynomial fit (see text). The blue, red, and green curves show the correlations from Andrews & Martini (2013), Tremonti et al. (2004), and Mingozzi et al. (2020) respectively, while the bottom and top stripes show the low-mass galaxy fit and the SDSS star-forming galaxy fit from Indahl et al. (2021) respectively. The dashed line shows the extrapolation from Indahl et al. (2021).