Example of the most plausible fitting for 1996-08-01 spectrum (in black). The synthetic spectra of emission and absorption components are respectively plotted in green and blue color whereas the sum is plotted in red. Note: the distorted red wing of the emission component. The wavelength of the emission component, λ_e, is measured on the synthetic spectrum of the emission component (green color), thus managing the blueshifting described in the text.