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      9.55 27.71 28.50
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 1 in T on cubic_a, trig_a, trig_c

chain     79.1 s; status ['converged']; Rwp 8.82-14.62 %; Σχ² 255401.4 with 1108 free
untied    114.3 s; status converged; Rwp 9.973 %; χ² 255371.3 with 1122 free; χ²r 1.873, f 2.503
joint     78.2 s; status converged; Rwp 9.990 %; χ² 256210.5 with 1029 free; Δχ² +839.3 for 93 fewer free; F 4.82, F/f² 0.77
cost      joint ÷ chain 0.99; untied ÷ chain 1.44

target   term        unit   n χ²r line |       line      esd |      joint      esd |  Δ/esd esd ratio
cubic_a  1              Å  33     1.63 |     9.1117   0.0001 |     9.1116   0.0001 |  -1.01     1.177
cubic_a  T       1e-6 Å/K  33     1.63 |   -17.9264   1.2958 |   -19.6002   1.4099 |  -1.29     1.088
trig_a   1              Å  33     0.80 |    10.1208   0.0012 |    10.1200   0.0010 |  -0.71     0.822
trig_a   T       1e-6 Å/K  33     0.80 |   -97.7285  11.0344 |   -86.5414   7.9912 |  +1.01     0.724
trig_c   1              Å  33     1.13 |    12.1132   0.0024 |    12.1099   0.0021 |  -1.36     0.853
trig_c   T       1e-6 Å/K  33     1.13 |   282.4930  22.0011 |   319.3325  16.7146 |  +1.67     0.760

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

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)

profile   the joint fit again under cProfile: 87.7 s (plain 78.2 s, profiled 87.7 s)
          rietx_kernels calls 17.44 s = 19.9 % of the profiled fit, 22.3 % of the plain wall
          _peak_chain_column 30.8 s over 39006 calls = 35.2 %
