Results of the fitting for different models. For each model, we show in the top left panel the correlation matrix used for the fitting, obtained by removing the effects from the continuum-reconstruction from the data; isocontours corresponding to the comoving distances in megaparsecs at each redshift pair are also shown. The top right panel displays results from the best fitting of the model considered here, ℳ. The residuals between the data and the best fit of the model, ℱ − ℳ, are shown in the bottom left panel. Finally, the bottom right panel shows the S/N of the data. Analogous panels for the simulations BIBORTON constλ and evolvλ are displayed in Figure E.3. Panel (a): Model ℳ1; constant. Panel (b): Model ℳ2; Gaussian, constant amplitude and width. Panel (c): Model ℳ3; Gaussian, amplitude and width redshift-dependent. Panel (d): BIBORTON SCRIPT.