Next, as a secondary test, values of γ ∞ i,j at 298.15 K were computed for 2163 systems, consisting of 117 unique solutes and 77 unique solvents, from Parts 1 to 6 of DECHEMA's "Activity Coefficients at Infinite Dilution" volumes . A parity plot of the predicted versus reference values of ln γ ∞ i,j is provided in fig. . In the top pane of fig. results are shown when we predict both ∆G self i,i and ∆G solv i,j , and the bottom pane shows the case when ∆G self i,i was computed using reference data. A summary of the statistics is provided in table 4. In the top pane we present results when ∆G self i,i was predicted using the SM12, SM8, or SMD universal solvent model. In the bottom pane we present results when ∆G self i,i was computed using reference vapor pressure data. Table . A summary of the squared correlation coefficient (R 2 ), root mean square error (RMSE), and mean unsigned error (MUE) for ln γ ∞ i,j , and the average absolute percent deviation (AAPD) for γ ∞ i,j predicted using the SM12, SM8, and SMD universal solvent model as compared to the reference data from DECHEMA. For the predictions, we compare the case where 1) ∆G self i,i is predicted using the SM12, SM8, and SMD universal solvent model, and where 2) ∆G self i,i is computed using reference data, as indicated. We again breakdown the predictions to cases where water was the solvent (j =water), water was the solute (i =water), and when neither the solvent or solute was water, and plot the results for SM12 in fig. . The breakdown resulted in 437 systems where water is the solvent, 52 systems where water is the solute, and 1668 systems where water was neither the solvent or solute.