Concentration – halo mass relation for our sample using all six halo models. The solid grey line shows the c_vir − M_vir relation from Dutton & Macció (2014) for the mean z of our sample, z = 0.85, while the shaded grey region shows the scatter of the relation. The circles depict the regular galaxies, whereas the stars represent the perturbed galaxies from our sample. The data points are colour-coded according to their z. To improve the readability, the error bars show the 65% CI (∼1σ symmetric errors).