LSD Stokes I (black), N (blue), and Stokes V (red) profiles of ρ Oph A. Each panel is labelled with the date of observation (top) and the rotational phase (lower left). The top-left panel indicates the amplification applied to N and Stokes V for display purposes; these profiles have also been vertically offset for display. Dashed green and solid purple curves indicate the disentangled Stokes I profiles of Aa and Ab. Vertical dashed green and solid purple lines show the integration ranges centred on the Aa and Ab radial velocities.