The threshold combination described above yields an MAD of 1.21 kJ • mol -1 for DLPNO-CCSD and 2.01 kJ • mol -1 for DLPNO-(T 0 ) (Fig. ). However, combining the individual contributions results in an MAD of 1.56 kJ • mol -1 for DLPNO-CCSD(T 0 ) with a mean relative time of 0.34. Compared to NORMALPNO DLPNO-CCSD(T 0 ) or pair-selected multi-level DLPNO-CCSD(T 0 ) with a target accuracy of NORMALPNO, the multi-level variant with a target accuracy of TIGHTPNO has less beneficial error cancellation between the individual contributions. As seen in Fig. , for pair-selected multi-level DLPNO-CCSD(T 0 ), the SD is indeed higher for a target accuracy of TIGHTPNO with 1.79 kJ • mol -1 than for NORMALPNO with only 1.53 kJ • mol -1 , but this result may not be meaningful due to the rather small size of the WCCR10 set. Moreover, it can be seen that the time saving of pair-selected multi-level DLPNO-CCSD(T 0 ) tends to be dominated by the time saved during the triples correction.