The five lowest singlet excited states obtained with the Tamm-Dancoff approximation of TDDFT are considered for all calculations. Norm-conserving Trouiller-Martins pseudopotentials are used with a plane-wave cutoff of 70 Ry and an isolated cubic box with an edge of 10 Å. Unless specified otherwise, the inner time step is set to δt = 10 a.u. See the supplementary materials for the raw data, the analysis scripts, and a full description of the computational details.