Distribution of grains over sizes and radial distances in a disc with e_b = 0.4 in two directions: (top) towards the apastron of the eccentric parent belt and (bottom) towards the periastron. The colour scale indicates normal optical depth per size decade. The dashed vertical lines represent the blowout limit due to radiation pressure for release near periastron (β = 0.3) and apastron (β = 0.7), respectively. The belt of parent bodies is indicated with solid horizontal lines. The dotted curves trace the apastron distances of grains produced on the respectively opposing sides of the parent belt.