Dispersion diagram for dynamically characterised waves on both data sets. Each dashed coloured line represents the value of the vertical wavelength that a wave would have given its specific horizontal wavelength and intrinsic phase velocity values according to the models described in Peralta et al. (2014a,b). The shaded region over the data points represents the error on the phase velocity of the waves. Due to the logarithmic nature of this diagram, the error bars go all the way down towards the abscissa.