Contrast comparison at 5σ between PACO, TLOCI, and PCA for IFS for the 24 science stars considered in this paper. Dashed lines show the 95% completeness interval. The grey area represents the coronographic mask. Contrast curves provided by PCA and TLOCI do not correspond to a 5σ false alarm rate contrarily to the contrast curves of PACO. The achievable contrasts are thus significantly over-optimistic for PCA and TLOCI (see discussion in the text).