Ratio of ROCKSTAR best-fit to the mean abundance of halos extracted from the simulations at z = {0, 0.5, 1.0, 2.0}. The vertical dotted line represents the cut in mass corresponding to the minimum number of 300 particles for the C0 runs. The regions in grey represent the relative 1% and 2.5% regions. The Poisson error bars correspond to the C0 and C3 (our cosmology with fewer halos), which count with ten and two realisations, respectively. We only show mass bins with more than 50 halos for improved readability.