As Fig. 3, but showing average results for: the DustPedia LTG sample (blue symbols with solid errorbars); the Viaene et al. (2016) analysis on HRS LTGs (red symbols with solid errorbars); the current analysis and the f_abs values of Viaene et al. (2016) for a sample of galaxies in common between the two works (blue and red symbols with dashed errorbars, respectively). For the common sample, the DustPedia morphology is used. We also show results for each galaxy from the current analysis: brown symbols are for HRS objects included in DustPedia, yellow for additional DustPedia objects. The number of galaxies used in each analysis and for each bin is indicated. The Im and Pec classes of Viaene et al. (2016) are combined into the Ir, T = 10, bin.