WP-1325 real-data measurement: the ZrMo2O8 ramp (Durham TOPAS tutorial 9.2)
machine   Darwin arm64, 10 CPUs, python 3.12.10, numpy 2.5.4
rietx     1.9.0.dev0 at 871d38a7, compiled kernels on
load      4.69 11.78 28.55
window    ranges 35..67 (0-based), 33 patterns, T 693.0-991.5 K, T_ref 842.25 K
protocol  scale_bkg, disp, cell, sample_profile; resolution held; 2θ (10.0, 70.0); phases ['LT-ZrMo2O8', 'cubic-ZrMo2O8', 'trigonal-ZrMo2O8']
form      polynomial of degree 2 in T on cubic_a, trig_a, trig_c

chain     25.1 s; status ['converged']; Rwp 8.82-14.62 %; Σχ² 255401.4 with 1108 free
untied    31.4 s; status converged; Rwp 9.973 %; χ² 255371.3 with 1122 free; χ²r 1.873, f 2.503
joint     356.3 s; status max_iter; Rwp 9.984 %; χ² 255914.4 with 1032 free; Δχ² +543.1 for 90 fewer free; F 3.22, F/f² 0.51
cost      joint ÷ chain 14.17; untied ÷ chain 1.25

target   term        unit   n χ²r line |       line      esd |      joint      esd |  Δ/esd esd ratio
cubic_a  1              Å  33     1.32 |     9.1120   0.0001 |     9.1121   0.0002 |  +0.96     1.228
cubic_a  T       1e-6 Å/K  33     1.32 |   -19.2425   1.3548 |   -19.8920   1.4135 |  -0.48     1.043
cubic_a  T^2    1e-9 Å/K²  33     1.32 |   -60.1526  18.0634 |   -82.6168  18.4104 |  -1.24     1.019
trig_a   1              Å  33     0.72 |    10.1176   0.0022 |    10.1185   0.0025 |  +0.41     1.178
trig_a   T       1e-6 Å/K  33     0.72 |   -23.5216  42.4075 |   -56.8300  46.4495 |  -0.79     1.095
trig_a   T^2    1e-9 Å/K²  33     0.72 |  -389.1098 214.7077 |  -153.9349 211.1431 |  +1.10     0.983
trig_c   1              Å  33     1.05 |    12.1206   0.0046 |    12.1231   0.0055 |  +0.53     1.204
trig_c   T       1e-6 Å/K  33     1.05 |   118.7216  88.4382 |    70.3650  99.7462 |  -0.55     1.128
trig_c   T^2    1e-9 Å/K²  33     1.05 |   837.3541 437.9638 |  1088.3866 448.0502 |  +0.57     1.023

joint diagnostics: ['BACKGROUND_ABSORPTION', 'BOUND_HIT', 'FLOOR_HIT', 'HIGH_CORRELATION', 'STAGE_MAX_ITER']
joint held (0): [] 

one law per joint fit: which target the Δχ² comes from
  cubic_a 118.4 s; status converged; Rwp 9.979 %; χ² 255691.6 with 1092 free; Δχ² +320.3 for 30 fewer free; F 5.70, F/f² 0.91
  trig_a  225.1 s; status converged; Rwp 9.977 %; χ² 255586.6 with 1092 free; Δχ² +215.4 for 30 fewer free; F 3.83, F/f² 0.61
  trig_c  201.2 s; status converged; Rwp 9.974 %; χ² 255410.2 with 1092 free; Δχ² +38.9 for 30 fewer free; F 0.69, F/f² 0.11

chain trajectories (T, value, esd; nan = held):
  cubic_a: 693:9.11224(0.00109) 703:9.11346(0.00065) 713:9.11354(0.00063) 723:9.11420(0.00045) 733:9.11353(0.00047) 742:9.11379(0.00046) 752:9.11396(0.00046) 762:9.11316(0.00041) 772:9.11213(0.00043) 781:9.11249(0.00045) 791:9.11239(0.00042) 800:9.11200(0.00041) 810:9.11203(0.00042) 819:9.11229(0.00047) 828:9.11181(0.00048) 838:9.11187(0.00048) 847:9.11182(0.00050) 856:9.11168(0.00047) 866:9.11217(0.00058) 875:9.11210(0.00051) 884:9.11208(0.00054) 893:9.11165(0.00052) 902:9.11146(0.00056) 911:9.11098(0.00052) 920:9.11054(0.00055) 929:9.10960(0.00059) 938:9.10898(0.00061) 947:9.10850(0.00064) 956:9.10794(0.00082) 965:9.10800(0.00085) 974:9.10752(0.00125) 983:9.10726(0.00168) 992:9.10794(0.00264)
  trig_a: 693:10.14499(0.02541) 703:9.99694(0.06107) 713:10.03532(0.06162) 723:10.07163(0.05290) 733:10.08360(0.04791) 742:10.07943(0.04913) 752:10.06495(0.04984) 762:10.11259(0.03140) 772:10.09575(0.03799) 781:10.09503(0.04159) 791:10.07001(0.03929) 800:10.07041(0.05335) 810:10.09771(0.03477) 819:10.08419(0.03802) 828:10.08710(0.03479) 838:10.12358(0.01772) 847:10.11323(0.01074) 856:10.11707(0.00754) 866:10.11913(0.00796) 875:10.11670(0.00395) 884:10.11807(0.00355) 893:10.11591(0.00220) 902:10.11597(0.00173) 911:10.11524(0.00117) 920:10.11384(0.00097) 929:10.11250(0.00087) 938:10.11145(0.00077) 947:10.11039(0.00073) 956:10.10925(0.00082) 965:10.10815(0.00076) 974:10.10781(0.00100) 983:10.10726(0.00114) 992:10.10764(0.00143)
  trig_c: 693:11.95431(0.04861) 703:12.22176(0.13694) 713:12.26268(0.13983) 723:12.17320(0.11708) 733:12.22462(0.11077) 742:12.20666(0.11306) 752:12.26268(0.11782) 762:12.23809(0.07575) 772:12.21981(0.09030) 781:12.25876(0.10069) 791:12.21266(0.09192) 800:12.22719(0.12382) 810:12.14945(0.08001) 819:12.25964(0.09352) 828:12.22725(0.08385) 838:12.11192(0.04044) 847:12.11141(0.02388) 856:12.11083(0.01682) 866:12.11918(0.01754) 875:12.12423(0.00842) 884:12.13115(0.00754) 893:12.12745(0.00477) 902:12.13053(0.00379) 911:12.13356(0.00257) 920:12.13551(0.00206) 929:12.13776(0.00177) 938:12.13872(0.00153) 947:12.14300(0.00140) 956:12.14436(0.00155) 965:12.14720(0.00140) 974:12.15057(0.00181) 983:12.15437(0.00205) 992:12.15855(0.00256)
