Oxygen abundance in galaxy M-8450-12701. Panela: Oxygen abundance in individual spaxel determined using R calibration from Pilyugin & Grebel (2016) as a function of radius (points). The line shows the broken linear relation for the radial abundance distribution within optical radius. Panelb: Normalised histogram of oxygen abundances for spaxels within the region of distinct azimuthal asymmetry (< 0.5 R₂₅ for this galaxy). The solid line denotes the histogram of the obtained oxygen abundances. The dashed red curve corresponds to the fit by two Gaussians to those data, the blue dotted curves show individual Gaussians.