T1 random plane networks (Delaunay-based): 500 networks, 367 of them not series-parallel
  m=2: 100 networks; orientation-preserving iso G(X)->G(X)* in 100; orientation-reversing in 3; nonseparable 65 | control mu_k->t_(k+1): planar 100, self-dual 100
  m=3: 100 networks; orientation-preserving iso G(X)->G(X)* in 100; orientation-reversing in 14; nonseparable 74 | control mu_k->t_(k+1): planar 0, self-dual 0
  m=4: 100 networks; orientation-preserving iso G(X)->G(X)* in 100; orientation-reversing in 5; nonseparable 80 | control mu_k->t_(k+1): planar 0, self-dual 0
  m=5: 100 networks; orientation-preserving iso G(X)->G(X)* in 100; orientation-reversing in 5; nonseparable 81 | control mu_k->t_(k+1): planar 0, self-dual 0
  m=6: 100 networks; orientation-preserving iso G(X)->G(X)* in 100; orientation-reversing in 5; nonseparable 78 | control mu_k->t_(k+1): planar 0, self-dual 0
T1 Euler characteristic 2, orientation-preserving self-duality and (tau odd <=> one component): PASS
