Poloidal mass flux of the gas originating in the innermost radial tracer bin between R = 2 and 2.5 au at t = 5, 25, and 50 orbits. The top panels show the azimuthal average, and the bottom panels show the traced mass flux in the midplane. The dotted black lines are density contours for (from top to bottom) 10⁻¹⁷ to 10⁻¹³ g/cm³ in increments of one order of magnitude. The red circle indicates the extent of the planet’s Hill sphere. The dashed grey lines show the boundaries of the radial bin, inside of which the tracer was originally distributed.