Overall MS relation. Each point represents the values of the stellar mass and SFR surface density of an accepted cell in one of the six galaxies of our sample. These points are colour coded as a function of their distance from the MS (black solid line), which is derived from the linear fit of the black points, which are marked with thin diamonds. The error bars correspond to the standard deviation of the data points in each bin. The grey dashed line represents the best-fit MS obtained in Enia et al. (2020) for a sample of unbarred spiral galaxies.