LIBEM2: Solution to the test problem LIBEM2_T
 
      x         y          phi_app   phi_ex
     0.025     0.025      -0.00009   0.00000
     0.075     0.025       0.00483   0.00500
     0.025     0.075      -0.00508  -0.00500
     0.075     0.075      -0.00004   0.00000
     0.050     0.050      -0.00009   0.00000