The number of haloes, their mass and associated colour. Masses of haloes in N-body simulations as a function of their position in the mass-ranked list. That is, given the N most massive haloes in the volume L = (2400 Mpc h⁻¹)³, the lower mass in the sample is M. Masses are from one run of Oriana N-body simulation at z = 0.52 and are given for the linking length of b = 0.2. Masses are in units of 10¹³ M_⊙ h⁻¹ and are not corrected for discreteness effects. For each halo mass we have shown in parentheses the number of particles that halo has given our mass resolution.