Similar consistency across basis sets is observed as T CutPNO is tightened. By the time that T CutPNO = 10 -9 , MAEs have been reduced to 0.01-0.02 ± 0.01 kcal/mol, with a maximum error < 0.05 kcal/mol. As a way of visualizing this convergence, Fig. plots the DLPNO errors for each of these 66 dimers, along with the mean error, as a function of the PNO thresholds. (Figure provides the corresponding convergence plot for DLPNO error as a percentage of ∆E, and analogous plots for Karlsruhe basis sets appear in Figs. and.) Note that the "tight-CCSD(T)" thresholds are similar to the "loose-MP2" thresholds, with T CutPNO = 10 -7 in both cases, and this similarity is reflected in the data.