Extended Data Fig. 2: Effect of orbital delocalization on photoionization delays of the 3a1 band.
From: Attosecond spectroscopy of size-resolved water clusters

Correlation between the photoionization delays and the first moment of the electron-hole density of the 3a1-orbital-band of water monomer and tetramer (s4) for a kinetic energy of eKE = 6 eV.