Notes. Physical parameters derived from low-resolution (Herschel and/or IRAM-30 m) maps within an area of 1.5×1.5 pc² (~700×700 arcsec²) around the phase center of our ALMA maps (see coordinates in Table 2): (1) Adopted cloud distances; (2) Total mass, M(total), derived from Herschel column density maps (Lombardi et al. 2014); (3) Total dense gas mass, M(dense), derived from N₂H⁺(1–0); (4) Fraction of dense gas (i.e. f = M_tot/M_dense; (5) Mean gas kinetic temperature, ⟨T_k⟩; (6) Number of Protostars (P) and Disk stars (D) identified by Spitzer (Megeath et al. 2012) (see also Fig. 7). ^(*) Note how the mass contribution in stars could significantly increase the mass load of high-mass, clustered regions such as OMC-1 and Flame Nebula.