Radial mass flux as seen from the Local Group barycentre for each ion. The position of each point in space with respect to the barycentre is measured relative to the MW. Negative flux (blue) represents gas moving towards the barycentre and positive flux (red) represents material moving away from it. Note that the numbers in the colourbars represent the symmetric exponent of the mass flux in the inflow and outflow cases. In all panels, black dashed lines enclose the circumgalactic medium of the MW and M31 up to the corresponding R₂₀₀ radii.