Comparison of the observed (pink solid lines) and modelled (black solid lines) continuum-corrected (pure) Brγ line visibilities of our AMBER observation of HD 98922. From top to bottom: wavelength dependence of flux and visibilities of the first, second, and third baseline. In each visibility panel the observed total visibilities (red, green, blue, as in Fig. 4), the observed pure Brγ line visibilities (pink), and the modelled pure Brγ line visibilities (black) are shown.