Fraction of fragmented mock clusters as a function of mass, for different redshift bins, for six detection algorithms. The figure shows the fragmentation for a number of fragments larger than one (two or more) and four (five or more), as given in the legend. The symbols that are not visible in the figure correspond to small fragmentation rate, below the figure range. Error bars are computed as in Fig. 11. Each catalog of detections has been trimmed to the most reliable detections insuring a mean purity of 80% in the range M >  10¹⁴ M_⊙ and z_true <  2.