Mesh in 2 dimensions:
  0-cells: 9
  2-cells: 8
Labels:
  marker: 2 strata of sizes (8, 1)
  depth: 2 strata of sizes (9, 8)
Residual:
Vec Object: 1 MPI processes
  type: seq
-0.0833333
0
0.583333
0
0
1
0.583333
1
0.916667