Average matter density (in units of the background-Universe average matter density) within concentric spheres around MDPL2 z = 0 cluster-sized halos, as a function of mass that is enclosed in each sphere. The colorscale encodes the number of lines per pixel on the plot. The enclosed mass is normalized to M₂₀₀, so all profiles converge at an average density 200 per the definition of M_200. The red solid line depicts the profile mode. The independent variable $\tilde{M}=M/M_{200}$ is equivalent to β in the analytic profile of Eq. (8).