Time series of the angular-momentum flux per solid-angle element measured during Solar Orbiter’s first orbit of the cruise phase. The diagram shows the proton contribution ℱ_p, the magnetic-field contribution ℱ_B, and the sum of both, ℱ_tot. In order to increase the visibility, we multiply ℱ_B with a factor 10. The magenta squares represent the measurements of ℱ_tot during the time of the compression region (CR) on 2020-09-06. The axis at the top indicates the heliocentric distance of the spacecraft at the time of the measurement. The scale of this axis is not linear. The grey-shaded areas indicate times for which our merged SWA/PAS-MAG data product is unavailable or the data flags for either dataset indicate poor data quality.