Traditionally, averages over multiple snapshots are carried to potentially make comparisons with experimental results. In this section, averaged spectra computed with the PE-TDDFT approach are compared directly with averaged spectra from the exciton model. These results are presented in Figure with solid lines (PE-TDDFT) or with dashed lines (exciton model) and it is noted that only polarizable embedding potentials are used: WAT for water, CHL for CHCl 3 and DMS for DMSO.