Gate-2C quick sweep (fixed J0=16, m=0.05, grid=48x48x64, angles=18)
Columns: d, mod_depth, alpha_min_deg, tau_max/|E0|, PASS

d= 4  mod= 0.497  alpha_min= 280.0  tauFrac= 0.610  PASS=False
d= 5  mod= 0.423  alpha_min= 260.0  tauFrac= 0.474  PASS=False
d= 6  mod= 0.359  alpha_min= 260.0  tauFrac= 0.360  PASS=False
d= 7  mod= 0.304  alpha_min=  80.0  tauFrac= 0.283  PASS=True
d= 8  mod= 0.258  alpha_min=  80.0  tauFrac= 0.239  PASS=True
d= 9  mod= 0.221  alpha_min=  80.0  tauFrac= 0.203  PASS=True
d=10  mod= 0.189  alpha_min=  80.0  tauFrac= 0.187  PASS=True
d=11  mod= 0.164  alpha_min=  80.0  tauFrac= 0.173  PASS=True
d=12  mod= 0.143  alpha_min= 260.0  tauFrac= 0.161  PASS=False
d=14  mod= 0.117  alpha_min=  80.0  tauFrac= 0.144  PASS=True
d=16  mod= 0.109  alpha_min= 260.0  tauFrac= 0.137  PASS=False
