2D sections in the (x, z) plane of the spatial density distribution of shocked plasma at t = 340 years for runs SN-4M-2.3E-1ETA (a), SN-4M-2.3E-4ETA (b), SN-4M-2.3E-6ETA (c), and SN-4M-2.3E-10ETA (d). The dotted circles mark the observed average position of the forward and reverse shocks in the (x, z) plane.