The pure CASPT2/cc-pVDZ predictions are too high, and the predictions obtained using the correction factors obtained from MRCI-F12+Q/aug-cc-pVTZ-F12 calculations are too low. Using the correction factors obtained from the spin-splitting approach with singlet-triplet gaps obtained from CASPT2-F12/aug-cc-pVTZ-F12 calculations makes almost no difference with respect to using the corrections obtained from pure CASPT2-F12/aug-cc-pVTZ-F12 calculations. The use of corrections obtained from the spin-splitting approach with MRCI-F12+Q/aug-cc-pVTZ-F12 singlet-triplet gaps gives more intermediary results.