Ratio of |$\xi _{0}$| in redshift space considering the effect from baryonic effect (red) and position bias of central galaxies (blue). The results come from the Aemulus |$\nu$| tier 2 simulations with hundreds of HOD models randomly distributed in the parameter space, expressed as the ratio compared with the results without corrections from baryonic effect or position bias of centrals. The shaded area denotes the inner 68 and 95 per cent distribution. The behaviour for |$w_{\rm p}$| and |$\xi _{2}$| is similar.