  N  M        dim   theta_1 (top of b)   vacuum weight   theta_2      eta_1 (top of QbQ)  nu-weight
  8  1        256   2.482905186       0.294594492   1.588183     1.821053980      0.178893
 12  1       4096   2.515808408       0.280689555   1.729968     1.914093612      0.151393
 16  1      65536   2.532768383       0.273547393   1.800182     1.960802261      0.138143
 20  1    1048576   2.543113791       0.269199939   1.842192     1.988899248      0.130331
  8  2       6561   2.580246876       0.255787096   1.878382     2.056510401      0.132173
 10  2      59049   2.582107406       0.254351666   1.912064     2.069833463      0.123726
 12  2     531441   2.583170834       0.253513804   1.933323     2.077937627      0.118365
 13  2    1594323   2.583538920       0.253220208   1.941211     2.080859187      0.116374
 14  2    4782969   2.583835404       0.252982192   1.947830     2.083267153      0.114703
  9  3     262144   2.585264373       0.251956113   1.955634     2.090591114      0.111955
 10  3    1048576   2.585375489       0.251833919   1.963295     2.092604243      0.110020
 11  3    4194304   2.585456984       0.251743901   1.969460     2.094135668      0.108509
  8  4     390625   2.585304054       0.251899414   1.966477     2.092375289      0.109647
  9  4    1953125   2.585407408       0.251787980   1.973604     2.094147402      0.107957
 10  4    9765625   2.585482870       0.251706418   1.978636     2.095469003      0.106671
  7  5     279936   2.585167301       0.252041588   1.967344     2.090730027      0.110638
  8  5    1679616   2.585310352       0.251889498   1.973293     2.092951300      0.108674
  9  5   10077696   2.585411524       0.251781422   1.979356     2.094569616      0.107211
  6  6     117649   2.584956378       0.252263976   1.957903     2.087708281      0.113060
  7  6     823543   2.585167603       0.252040997   1.970057     2.090824109      0.110429
  8  6    5764801   2.585310518       0.251889168   1.975285     2.093012901      0.108531
  6  8     531441   2.584956396       0.252263935   1.958980     2.087725732      0.113012

extrapolation with the runs [(6, 8), (7, 6), (8, 6), (9, 5), (10, 4)] (N, M):
  top of b      : largest computed 2.5854829;  fit limit - A/N^2: 2.585776;  fit limit - A/N^2 - B/N^3: 2.585813;   claimed 2.585827
  vacuum weight : largest computed 0.2517064;  fit limit - A/N^2: 0.251395;  fit limit - A/N^2 - B/N^3: 0.251353;   claimed 0.251332
  top of QbQ    : largest computed 2.0954690;  fit limit - A/N^2: 2.099907;  fit limit - A/N^2 - B/N^3: 2.100267;   claimed 2.101991

largest second eigenvalue of a truncated b: 1.979356080797   (sqrt 6 = 2.449490)
largest eigenvalue of a truncated QbQ: 2.095469002932   (sqrt 6 = 2.449490; claimed ||QbQ|| ~ 2.10199)
