Results of computing of T₁₀₀ for a set of 15 000 galaxies. The points are color coded by their input magnitude, and the size of each point is determined by the input r_e of the GALFIT model. The solid red line denotes the one-to-one relation. The left panel refers to the size measurement without any correction, and the right panel presents the same results, but after applying the same sky correction as described in Sect. 4.6. The large red points represent the median sizes per bin, the error bar in the x-axis represents the bin width, and the y-axis represents the median absolute dispersion of the bin.