Magnetic field in the reference model. On the left we display the histogram of the magnetic field strength as a function the density. On the right we display the histogram of the Alfvénic Mach number vs. the density. The colors display the mass in each bin of the histogram. The solid and dashed black lines denote a ∝ρ^3/2 and ∝ √ρ profile, respectively. The histograms are consistent with a clump for which the bulk of the collapse is weakly influenced by the magnetic field (∝ρ^3/2) and some of the low-density material (with MA < 1) is supported, in part, by the magnetic field.