Paths of the growth and drift of dust aggregates at each initial orbital radius (dashed gray lines). Radial size distribution of dust aggregates at the specific time (solid and dotted lines). a) Compact case, where the red dotted line shows the isochrone at t = 10⁵ years and the solid red line shows at t = 10⁶ years. b) Fluffy growth case, where the dotted blue line shows the isochrone at t = 10⁵ years and the solid blue line at t = 10⁶ years.