Thin- and thick-disc scale-heights (top and bottom panels, respectively) of the PSF-deconvolved model fit as a function of the circular velocity (v_c) for the galaxies in our sample with circular velocity information (see Table 2). The stars represent the corresponding values for the Milky Way (scale heights from Gilmore & Reid 1983, and circular velocity from Bovy et al. 2012). The black dashed line corresponds to a robust linear regression to the gas-rich galaxies in Comerón et al. (2018). Overplotted are the values of Comerón et al. (2018), labelled C18.