Total IR (8−1000 μm) luminosity or SFR as a function of redshift for the PHz-IRAM sources (full red stars for secure line identifications and full blue stars for uncertain line identifications) and for 1.4 < z < 3.1 cluster and protocluster members from the literature (gray triangles and crosses). In the case of multiple EMIR detections associated with the same SPIRE source, an upper limit to L_IR was reported with a downward pointing arrow. Blue stars connected with a solid blue line refer to the same source and to two possible redshifts. The black dashed line represents the total IR luminosity of a source with S(350 μm) = 40 mJy and T_dust = 30 K (derived using the cmcirsed package; Casey 2012) corresponding to the selection of the majority of the PHz-IRAM targets. The dotted line is the same L_IR limit scaled by −0.2 dex and used to select a subset of cluster and protocluster members from the literature for comparison (gray triangles).