Correlations between line EWs and continuum flux. Correlation between EW Hβ and continuum flux for parameters obtained from fit (red dots) and for parameters included in the model (black dots) for the initial set of model spectra (top). The same just for EW Fe II 4434−4684 Å and continuum flux (bottom). The size of the dots denotes the contribution of the VBLR in the model spectra, where the largest dots represent the largest VBLR contribution.