Notes. ⁽¹⁾Flux recovered by the ALMA 12 m array at 1.3 mm and integrated over the 1.3 mm imaged area. In the case of Intermediate and Evolved protocluster clouds and G327.29, a second value, corrected for free-free contamination, is given by ignoring the 1.3 mm fluxes in areas where the free-free emission dominates (as indicated by the H41α image). ⁽²⁾Mass recovered by the ALMA 12 m array computed from the total 1.3 mm fluxes corrected for free-free contamination (Col. (3), right value) and using Eq. (3) with and T_dust = 20 K.⁽³⁾Cores are sources extracted at 1.3 mm (Col. (5)), whose emission consists of thermal dust emission. The sources of Col. (5), which are not included in Col. (6) are candidate ionization peaks detected through their free-free emission. ⁽⁴⁾Assuming the same temperature for all type of clouds when measuring their total cloud mass, the gas mass concentration from 1 pc to 0.1 pc cloud structures would be reduced by factors of 1.3 and 1.75 for Intermediate and Evolved clouds, respectively.