Cumulative area of the contours as a function of their average column density at 3 Myr. The two images are obtained from the original column density map (top) and the one smoothed with a Gaussian beam with 0.05 pc standard deviation (bottom). As in Fig. 7, the blended lines in the bottom panel are the ones plotted at 0.0073 pc resolution. The dashed line marks the area corresponding to the 500 pixel criterion.