In the Figures we have, in the lower frequency part of the O-H stretching band, blue q-Gaussians with q values ranging from 1.018 to 1.43; they represent the "fully symmetric 4-hydrogen bonded tetrahedral water molecule where all neighboring water molecules are vibrating together in phase" . With a q-Gaussian, we do not need to postulate the presence of a further component, as the Fermi resonance in . The other main component, the magenta q-Gaussian, can correspond to "the loss of a hydrogen bond". The last blue component on the right is due to the free OH stretching as in the vapor state.