Left panel: histograms of the column density distributions, right panel: normalized PDFs of the filaments with cores. The dash-dotted lines overplotted on the PDFs show the best Gaussian fit of the data. The red lines are for the observations, blue for the simulations, and green for the observations without filament 1. The positions of the observed filaments and cores are highlighted in Fig. 2, while the simulated filaments and cores are outlined in Fig. 3.