 deg |       Ex all  Ex off-wall       Hy all  Hy off-wall       Hz all
  10 |    9.608e-04    9.608e-04    2.421e-04    2.307e-04    0.000e+00
  14 |    1.832e-03    1.832e-03    2.718e-04    2.617e-04    0.000e+00
  18 |    2.967e-03    2.967e-03    2.978e-04    2.885e-04    0.000e+00
  22 |    4.371e-03    4.371e-03    3.208e-04    3.120e-04    0.000e+00
  28 |    6.972e-03    6.972e-03    3.504e-04    3.420e-04    0.000e+00
  34 |    1.015e-02    1.015e-02    3.768e-04    3.687e-04    0.000e+00

keys: ['Ex', 'Ey', 'Ez', 'Hx', 'Hy', 'Hz', 'layer', 'x', 'z']
largest Ex jump at x/P = 0.551085 (grating walls at 0.45 and 0.30); jump 1.028e-02
top-8 jump locations x/P: [0.5511 0.55   0.9978 1.     0.004  0.546  0.5536 0.5575]
