Alternative groupings of robust prestellar cores in NGC 2068 and 2071. The left panel shows the N2 cluster, the middle panelthe N0 = N1 + N2 clusters (see left panel of Fig. D.2), and the right panel all cores lying above ~2 × 10²¹ cm⁻² in this area (see right panel of Fig. D.2). Black open diamonds mark the 3 (left and middle panels) or 10 (right panel) most massive prestellar cores in these clusters.