Composite contrast curve from NaCo L′ observations, obtained from the combination of RSM and the modified LOCI subtraction techniques. The y-axis shows the 5σ contrast limits obtained from modified LOCI subtraction techniques (shown in red solid dots), beyond ~11 au and the equivalent flux ratio or sensitivity limits obtained using RSM algorithm corresponding to a TPR of 50% (blue solid dots) and 90% (green solid dots).