Flow-distance ranges and separation-dependent relative errors for the Fornax ZoI. Left panel: Flow distance histogram of galaxies within a primary distance range from 18 to 22 Mpc, that is, around the distance of the Fornax cluster. The different panels correspond to the four types of flow distances as indicated. The vertical dashed line marks the distance to the Fornax cluster of 20 Mpc. Right panel: Relative error for galaxies in the distance range (5 Mpc, 33 Mpc) against the angular separation from the Fornax cluster. The four curves correspond to the four flow methodologies as given in the legend. The additional peak at a separation of ∼130 deg is due to the Virgo cluster.