Observed spectra of the CEMP star HD 76396 compared with its modelled spectra. The upper and lower panels are used to ensure that a proper normalisation of the observed spectrum is performed in the Hα region illustrated in the middle panel. Pink shades represent variations of up to ±200 K, providing a view of the flux sensitivity to T_eff along the wavelength range. Grey shades indicate transitions not appearing in the observational spectrum, which were eliminated from the synthesis line lists, according to the procedure described in Giribaldi & Smiljanic (2023a). The fitting windows used are highlighted in green in the residual plot in the second panel. Some atomic and molecular characteristics are labelled in the plots.