Median ram-pressure distributions around progenitors of the z = 0 cluster halos from GAEA. The redshift and halo mass range are labeled above each panel. The x and y axes are 3D radius and velocity normalized by the virial radius and virial velocity. Different colors mark the four RPS zones defined in Section 3.1. Gray lines separating different zones are fits obtained as a function of redshift and host halo mass, defined by Equation (4).