Histograms of polarization fraction (left) and polarization position angle ϕ (right) for all the sources of our sample. The histogram lines have been smoothed with a 1D-Gaussian kernel of a size of 0.2% in and 2° in ϕ. The shaded areas correspond to the mean of the uncertainty in the values of and ϕ within eachbin of the histograms. Among the two datasets we have toward OMC3 MMS6, “OMC3 MMS6 H” and “OMC3 MMS6 L” denote the high and low resolution observations, respectively.