The same summary error statistics have also been computed for the diffuse augmented versions of those auxiliary basis sets, and for the DZ orbital basis the cc-pV(D+d)Z+1g/JKFit set. These statistics, along with the number of auxiliary functions for a single second-row atom (N ABS ), are presented in Tables S5-S7 in the Supporting Information. For our recommendations, we establish a guiding principle that the summary statistics of ∆DF should be approximately two orders of magnitude smaller than the BSIE of the orbital sets presented in Table , while keeping N ABS small for reasons of computational efficiency.