Comparison of the secondary bias signal for different properties. The stars represent the difference between the average relative bias of the upper subsets and the average relative bias of the lower subsets, in the mass range of log₁₀(M_group/h⁻¹ M_⊙) 12 and 12.5. The results are shown for the 15% (purple) and 50% (green) subsets. The properties analysed are local density, Minimum density, Wall saddles, Filament saddles, Maximum density, and colour.