Differential mass density distribution for the measurement-derived masses, including (red) or excluding (black) the particles with v_msr < 3 km/s that most likely feature severely overestimated masses, and for the iteratively calculated masses (blue), of the Krüger subset in mass bins of N = 30 particles each. The horizontal error bars indicate the width of the mass bins, and the vertical error bars stem from the uncertainty of the mass determination, scaled by $1/\sqrt{N}$. (See Landgraf 1998, Fig. 5.3, and Frisch et al. 1999, Fig. 2.)