Function tests pass for order 0 at tolerance 1e-10
Function tests pass for order 0 derivatives at tolerance 1e-10
Interpolation tests pass for order 0 at tolerance 1e-10
Interpolation tests pass for order 0 derivatives at tolerance 1e-10
Interpolation tests pass for order 0 at tolerance 1e-10
Interpolation tests pass for order 0 derivatives at tolerance 1e-10
Function   convergence rate at refinement 0: 1.32
Derivative convergence rate at refinement 0: 0.39
Function   convergence rate at refinement 1: 1.93
Derivative convergence rate at refinement 1: 0.94
Function   convergence rate at refinement 2: 1.98
Derivative convergence rate at refinement 2: 0.99