Test by compression in non-equal-mass aggregate collisions. The results of N-body simulations of non-equal-mass BCCA collisions are plotted by circles and triangles for the mass ratios M _p / M _t = 1/16 and 1/4, respectively. Each data point is the averaged value obtained from 10 runs of N-body simulation for different types of initial BCCA clusters, as done by W08. The standard errors in the averaged values are also displayed. The predictions by the refined model are plotted by solid lines, and the dashed line indicates the formula obtained by W08.