2D phi4 L=128 observables, kappa=0.26

HMC raw: N_raw=10240 N_used=10240 N_effective=10240 z2=False
   abs_phi_bar: 0.031507112 +/- 2.306217e-04
           chi: 9.2111727 +/- 0.14804717
      S_over_V: 0.45120655 +/- 5.213505e-05
            U4: 0.010998553 +/- 0.015829963
        kappa2: 0.0015543353 +/- 2.105865e-05
        kappa4: -8.353871e-08 +/- 1.145714e-07
        kappa6: 6.316968e-10 +/- 1.324749e-09
        kappa8: 8.118049e-12 +/- 1.117010e-11
  abs_phi_pool: 0.77415924 +/- 7.595773e-05
  kappa2_s_pool: 0.91051438 +/- 1.654831e-04
  kappa4_s_pool: -0.27214679 +/- 2.747256e-04
  kappa6_s_pool: 0.60035945 +/- 0.0011969574
  kappa8_s_pool: -3.1488565 +/- 0.0095983315
     U4_s_pool: 0.10942325 +/- 9.185496e-05
    abs_phi_ps: 0.77415924 +/- 9.595967e-05
   kappa2_s_ps: 0.91041963 +/- 2.186645e-04
   kappa4_s_ps: -0.27245995 +/- 3.047600e-04
   kappa6_s_ps: 0.59919909 +/- 0.0014296242
   kappa8_s_ps: -3.1550199 +/- 0.010474197
       U4_s_ps: 0.10952329 +/- 1.070476e-04

HMC Z2: N_raw=10240 N_used=10240 N_effective=20480 z2=True
   abs_phi_bar: 0.031507112 +/- 2.334840e-04
           chi: 9.2111727 +/- 0.14640677
      S_over_V: 0.45120655 +/- 4.957676e-05
            U4: 0.010998553 +/- 0.016356296
        kappa2: 0.0015549035 +/- 2.108327e-05
        kappa4: -7.977442e-08 +/- 1.187840e-07
        kappa6: 5.949318e-10 +/- 1.281584e-09
        kappa8: 6.970046e-12 +/- 1.019635e-11
  abs_phi_pool: 0.77415924 +/- 7.486275e-05
  kappa2_s_pool: 0.91051495 +/- 1.610102e-04
  kappa4_s_pool: -0.27214793 +/- 2.896044e-04
  kappa6_s_pool: 0.60036532 +/- 0.0012385398
  kappa8_s_pool: -3.1489061 +/- 0.009705781
     U4_s_pool: 0.10942325 +/- 9.697476e-05
    abs_phi_ps: 0.77415924 +/- 9.595967e-05
   kappa2_s_ps: 0.91051495 +/- 2.179542e-04
   kappa4_s_ps: -0.2725715 +/- 3.117209e-04
   kappa6_s_ps: 0.60250583 +/- 0.0014781491
   kappa8_s_ps: -3.1935038 +/- 0.01325541
       U4_s_ps: 0.10952329 +/- 1.070476e-04

DM multi-L Z2: N_raw=2048 N_used=2048 N_effective=4096 z2=True
   abs_phi_bar: 0.032117402 +/- 5.196416e-04
           chi: 9.6062629 +/- 0.33250481
      S_over_V: 0.45246823 +/- 1.257580e-04
            U4: 0.017678506 +/- 0.026445595
        kappa2: 0.0016178473 +/- 4.842449e-05
        kappa4: -1.388167e-07 +/- 2.075548e-07
        kappa6: -2.363865e-09 +/- 1.607113e-09
        kappa8: 1.680499e-11 +/- 1.857966e-11
  abs_phi_pool: 0.77475176 +/- 1.742965e-04
  kappa2_s_pool: 0.91227418 +/- 3.780820e-04
  kappa4_s_pool: -0.27015284 +/- 6.532279e-04
  kappa6_s_pool: 0.59871044 +/- 0.002825894
  kappa8_s_pool: -3.1219047 +/- 0.022124703
     U4_s_pool: 0.10820255 +/- 2.146291e-04
    abs_phi_ps: 0.77475176 +/- 1.967447e-04
   kappa2_s_ps: 0.91227418 +/- 4.284681e-04
   kappa4_s_ps: -0.27219884 +/- 8.285945e-04
   kappa6_s_ps: 0.60867587 +/- 0.0036084076
   kappa8_s_ps: -3.3334247 +/- 0.045429188
       U4_s_ps: 0.10870555 +/- 2.477128e-04

HMC Z2 comparison against prompt reference:
  PASS means the center value is consistent with the prompt reference.
  WARN means this run did not strictly reproduce that table entry.
  PASS  abs_phi_bar: got 0.031507112 +/- 2.334840e-04 | ref 0.0312 +/- 6.000000e-04 | diff=3.071121e-04 | z=+0.48
  PASS          chi: got 9.2111727 +/- 0.14640677 | ref 9.07 +/- 0.37 | diff=0.14117271 | z=+0.35
  PASS     S_over_V: got 0.45120655 +/- 4.957676e-05 | ref 0.4512 +/- 1.000000e-04 | diff=6.546206e-06 | z=+0.06
  PASS           U4: got 0.010998553 +/- 0.016356296 | ref -0.03 +/- 0.06 | diff=0.040998553 | z=+0.66
  PASS       kappa4: got -7.977442e-08 +/- 1.187840e-07 | ref 2.200000e-07 +/- 3.900000e-07 | diff=-2.997744e-07 | z=-0.74
  PASS       kappa6: got 5.949318e-10 +/- 1.281584e-09 | ref 5.300000e-09 +/- 5.700000e-09 | diff=-4.705068e-09 | z=-0.81
  PASS       kappa8: got 6.970046e-12 +/- 1.019635e-11 | ref 4.500000e-11 +/- 4.200000e-11 | diff=-3.802995e-11 | z=-0.88
  PASS kappa2_s_pool: got 0.91051495 +/- 1.610102e-04 | ref 0.9108 | diff=-2.850522e-04 | rel=-0.031%
  PASS kappa4_s_pool: got -0.27214793 +/- 2.896044e-04 | ref -0.2745 | diff=0.0023520665 | rel=-0.857%
  WARN kappa6_s_pool: got 0.60036532 +/- 0.0012385398 | ref 0.6107 | diff=-0.010334683 | rel=-1.692%
  WARN kappa8_s_pool: got -3.1489061 +/- 0.009705781 | ref -3.356 | diff=0.20709386 | rel=-6.171%
  PASS    U4_s_pool: got 0.10942325 +/- 9.697476e-05 | ref 0.1094 | diff=2.325420e-05 | rel=+0.021%
  PASS  kappa2_s_ps: got 0.91051495 +/- 2.179542e-04 | ref 0.9108 | diff=-2.850522e-04 | rel=-0.031%
  PASS  kappa4_s_ps: got -0.2725715 +/- 3.117209e-04 | ref -0.2745 | diff=0.0019285033 | rel=-0.703%
  WARN  kappa6_s_ps: got 0.60250583 +/- 0.0014781491 | ref 0.6107 | diff=-0.0081941664 | rel=-1.342%
  WARN  kappa8_s_ps: got -3.1935038 +/- 0.01325541 | ref -3.356 | diff=0.16249622 | rel=-4.842%
  PASS      U4_s_ps: got 0.10952329 +/- 1.070476e-04 | ref 0.1094 | diff=1.232859e-04 | rel=+0.113%
