Same as Fig. 2 but for the CON-quest sample. Labelled sources correspond to same galaxies as in Fig. 6 (i.e. those galaxies classified as CONs in Falstad et al. 2021). Colour-coded stars, circles, and squares represent the IR luminosity of ULIRGs, LIRGs, and subLIRGs, respectively. The grey solid and dashed horizontal lines correspond to the average and 3σ values found by Hernán-Caballero et al. (2020) for star-forming galaxies. Blue solid line corresponds to average value found for group 2 of ULIRGs (see text).