Comparison of contrast maps for HIP 72192 (SPHERE-IRDIS). Top row: largest contrast between the host star and a point source that would theoretically lead to a probability of detection greater than or equal to 50% at the detection threshold τ = 5. Three methods are compared: the standard PACO algorithm applied on the whole ADI stack (left), PACO applied to the subset of the ADI stack obtained by removing the eight frames with the largest fluctuations (center), and the proposed robust extension of PACO applied on the whole stack (right). The bottom row gives the gain in contrast with respect to PACO algorithm.