Top panel: distribution of stellar mass surface densities, μ_*, for our two redshift ranges. Middle panel: relation between opacity, represented by the slope of the SFR_FUV-inclination relation, and stellar mass surface density. Bottom panel: relation between overall UV attenuation, represented by the intercept of the SFR_FUV-inclination relation, andμ_*. Data are colour-coded by the median size, r_1∕2, of each bin in the bottom panel, with colours ranging from 4 kpc (light) to 7 kpc (dark).