Brγ differential interferometric observables of S CrA N: Squared differential visibilities (left); differential phases (middle); u-v plane coverage (upper-right); line-to-continuum flux ratio in the reference frame of the star, LSR- and tellurics-corrected (lower-right). Each color used in the u-v coverage plot corresponds to an interferometric baseline and is consistent over all panels. For the interferometric observables, the plots include the quantities for each frame (solid lines) and the median for August 19 (circles) and for August 20 (squares). Uncertainties are given in all plots (vertical bars), and are smaller than the symbol if not visible. Gray shaded regions correspond to the velocities that are not considered for our Brγ line analysis (see text for details).