Latitudinal cut through artificial data. The black line indicates the magnetic field, modeled as a Gaussian with a FWHM of 2.4°. The green line indicates the inflow model of u_∇B for the shown magnetic field. The purple line indicates the inflow model of at 2 days after t_90% + 0.5 days. The orange line shows the inflow profile that compensates for the diffusion of the magnetic field for a constant diffusivity of 250 km²s⁻¹.