Table and Figure shows the computed solvation free energy results obtained using HF/6-31G(d), AM1, PM3, PM6 and DFTB using the implicit solvation models SMD and COSMO using the MNSOL data set described in the Computational Details section. We compute the root mean square error (RMSE), mean signed error (MSE) and mean unsigned error (MUE) in order to properly quantify the accuracy of our results. The MNSOL data set is further split into the full set of molecules (black), neutral molecules (green), cations (red), and anions (blue).