Constraints on planetary systems for 12 targets in our survey. The positions of the inner and the outer debris belts are shown in orange by shading the regions inside the inner and beyond the outer. Our mass contrast limits are based on SPHERE/IRDIS and COND model predictions. Dynamical mass constraints for a slightly closer planet spacing of 20 mutual Hill radii from Shannon et al. (2016) are shown in green with masses below this value shaded. Np is the number of planets with the mass (indicated in green) required to open the gap. The uncertainties for debris belt position and dynamical mass limit are calculated based on the uncertainty in debris belt temperature, and indicated with hatching.