M=8  grouped tile s98  per-token twin s99
  geometry              x        legA         i8t         i8g  i8g/legA   i8g/i8t
  5120x17408        128  5.7945e-04  1.2275e-02  1.0769e-02     18.59    0.8774
  17408x5120          64  5.6704e-04  1.2859e-02  1.0786e-02     19.02    0.8388
  6144x5120          64  5.7633e-04  1.2686e-02  1.0785e-02     18.71    0.8501
  5120x10240         48  5.4264e-04  1.2876e-02  1.1444e-02     21.09    0.8888
  5120x6144          48  5.5624e-04  1.2448e-02  1.0932e-02     19.65    0.8782
  5120x12288         16  5.5540e-04  1.2322e-02  1.0763e-02     19.38    0.8735
  5120x1024          32  6.3923e-04  1.2347e-02  1.0673e-02     16.70    0.8644

  census-weighted mean over 400 linears: legA 5.7358e-04  i8t 1.2535e-02  i8g 1.0867e-02  i8g/legA 18.95x  i8g/i8t 0.8670x

  READ THE TWO COLUMNS DIFFERENTLY. i8g/i8t on a synthetic Gaussian row is
  the FLAT-ROW NULL (int8-tail-mechanism.md puts its ceiling at 1.24x, i.e.
  0.806); the served-activation figure is 0.6800 over 400 paired classes
  (int8-single-bank-fold.md). i8g/legA is what a verify dispatch would
  actually pay, and a flat row does not flatter it.
M=48  grouped tile s94  per-token twin s95
  geometry              x        legA         i8t         i8g  i8g/legA   i8g/i8t
  5120x17408        128  5.8003e-04  1.2328e-02  1.0750e-02     18.53    0.8719
  17408x5120          64  5.6655e-04  1.2826e-02  1.0772e-02     19.01    0.8398
  6144x5120          64  5.7186e-04  1.2801e-02  1.0950e-02     19.15    0.8554
  5120x10240         48  5.3863e-04  1.2898e-02  1.1384e-02     21.13    0.8826
  5120x6144          48  5.5607e-04  1.2414e-02  1.0839e-02     19.49    0.8731
  5120x12288         16  5.5542e-04  1.2339e-02  1.0777e-02     19.40    0.8734
  5120x1024          32  6.3979e-04  1.2245e-02  1.0731e-02     16.77    0.8763

  census-weighted mean over 400 linears: legA 5.7252e-04  i8t 1.2556e-02  i8g 1.0872e-02  i8g/legA 18.99x  i8g/i8t 0.8658x

  READ THE TWO COLUMNS DIFFERENTLY. i8g/i8t on a synthetic Gaussian row is
  the FLAT-ROW NULL (int8-tail-mechanism.md puts its ceiling at 1.24x, i.e.
  0.806); the served-activation figure is 0.6800 over 400 paired classes
  (int8-single-bank-fold.md). i8g/legA is what a verify dispatch would
  actually pay, and a flat row does not flatter it.
