grouped_stacks__050_100d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 0.419 for 12 degrees of freedom Null hypothesis probability = 9.571545e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 0.419 for 12 degrees of freedom Null hypothesis probability = 9.571522e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 0.419 for 12 degrees of freedom Null hypothesis probability = 9.571553e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 0.619 for 10 degrees of freedom Null hypothesis probability = 7.991791e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 0.580 for 10 degrees of freedom Null hypothesis probability = 8.316441e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 0.763 for 10 degrees of freedom Null hypothesis probability = 6.648530e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 0.763 for 10 degrees of freedom Null hypothesis probability = 6.648655e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 0.637 for 12 degrees of freedom Null hypothesis probability = 8.126559e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 0.637 for 12 degrees of freedom Null hypothesis probability = 8.125869e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 0.636 for 12 degrees of freedom Null hypothesis probability = 8.133713e-01 grouped_stacks__050_100d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 0.636 for 12 degrees of freedom Null hypothesis probability = 8.133006e-01 grouped_stacks__050_100d__spec__model__vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 0.419 for 12 degrees of freedom Null hypothesis probability = 9.570077e-01 grouped_stacks__050_100d__spec__model__vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 0.419 for 12 degrees of freedom Null hypothesis probability = 9.570051e-01 grouped_stacks__050_100d__spec__model__vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 0.419 for 12 degrees of freedom Null hypothesis probability = 9.570087e-01 grouped_stacks__050_100d__spec__model__vphabs_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 0.419 for 12 degrees of freedom Null hypothesis probability = 9.570060e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 0.768 for 10 degrees of freedom Null hypothesis probability = 6.602628e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 0.582 for 10 degrees of freedom Null hypothesis probability = 8.303300e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 0.767 for 10 degrees of freedom Null hypothesis probability = 6.611025e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 0.767 for 10 degrees of freedom Null hypothesis probability = 6.611250e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 0.640 for 12 degrees of freedom Null hypothesis probability = 8.097848e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 0.640 for 12 degrees of freedom Null hypothesis probability = 8.097105e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 0.639 for 12 degrees of freedom Null hypothesis probability = 8.105083e-01 grouped_stacks__050_100d__spec__model__vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 0.639 for 12 degrees of freedom Null hypothesis probability = 8.104345e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 0.8174 for 32 degrees of freedom Null hypothesis probability = 7.566588e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 0.8174 for 32 degrees of freedom Null hypothesis probability = 7.566184e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 0.8174 for 32 degrees of freedom Null hypothesis probability = 7.566723e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.052 for 30 degrees of freedom Null hypothesis probability = 3.883189e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.052 for 30 degrees of freedom Null hypothesis probability = 3.879958e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.055 for 30 degrees of freedom Null hypothesis probability = 3.834938e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.056 for 30 degrees of freedom Null hypothesis probability = 3.831889e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 0.9862 for 32 degrees of freedom Null hypothesis probability = 4.887870e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 0.9864 for 32 degrees of freedom Null hypothesis probability = 4.884449e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 0.9894 for 32 degrees of freedom Null hypothesis probability = 4.836849e-01 grouped_stacks__100_150d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 0.9896 for 32 degrees of freedom Null hypothesis probability = 4.833632e-01 grouped_stacks__100_150d__spec__model__vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 0.8152 for 32 degrees of freedom Null hypothesis probability = 7.597246e-01 grouped_stacks__100_150d__spec__model__vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 0.8154 for 32 degrees of freedom Null hypothesis probability = 7.594307e-01 grouped_stacks__100_150d__spec__model__vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 0.8152 for 32 degrees of freedom Null hypothesis probability = 7.597403e-01 grouped_stacks__100_150d__spec__model__vphabs_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 0.8154 for 32 degrees of freedom Null hypothesis probability = 7.594466e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.051 for 30 degrees of freedom Null hypothesis probability = 3.896371e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.053 for 30 degrees of freedom Null hypothesis probability = 3.874220e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.055 for 30 degrees of freedom Null hypothesis probability = 3.844582e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.056 for 30 degrees of freedom Null hypothesis probability = 3.823253e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 0.9854 for 32 degrees of freedom Null hypothesis probability = 4.901550e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 0.9868 for 32 degrees of freedom Null hypothesis probability = 4.878252e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 0.9887 for 32 degrees of freedom Null hypothesis probability = 4.847370e-01 grouped_stacks__100_150d__spec__model__vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 0.9902 for 32 degrees of freedom Null hypothesis probability = 4.824513e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.191 for 40 degrees of freedom Null hypothesis probability = 1.896414e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.191 for 40 degrees of freedom Null hypothesis probability = 1.896473e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.191 for 40 degrees of freedom Null hypothesis probability = 1.896516e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.121 for 38 degrees of freedom Null hypothesis probability = 2.805002e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.119 for 38 degrees of freedom Null hypothesis probability = 2.823806e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.114 for 38 degrees of freedom Null hypothesis probability = 2.895238e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.113 for 38 degrees of freedom Null hypothesis probability = 2.901322e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 1.064 for 40 degrees of freedom Null hypothesis probability = 3.621166e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 1.063 for 40 degrees of freedom Null hypothesis probability = 3.629850e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 1.058 for 40 degrees of freedom Null hypothesis probability = 3.707739e-01 grouped_stacks__180_250d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 1.058 for 40 degrees of freedom Null hypothesis probability = 3.714511e-01 grouped_stacks__180_250d__spec__model__vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.023 for 40 degrees of freedom Null hypothesis probability = 4.299386e-01 grouped_stacks__180_250d__spec__model__vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.022 for 40 degrees of freedom Null hypothesis probability = 4.309259e-01 grouped_stacks__180_250d__spec__model__vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.023 for 40 degrees of freedom Null hypothesis probability = 4.297119e-01 grouped_stacks__180_250d__spec__model__vphabs_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.023 for 40 degrees of freedom Null hypothesis probability = 4.307003e-01 grouped_stacks__180_250d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.549 for 38 degrees of freedom Null hypothesis probability = 1.659678e-02 grouped_stacks__180_250d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.515 for 38 degrees of freedom Null hypothesis probability = 2.166364e-02 grouped_stacks__180_250d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.529 for 38 degrees of freedom Null hypothesis probability = 1.949005e-02 grouped_stacks__180_250d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.496 for 38 degrees of freedom Null hypothesis probability = 2.514860e-02 grouped_stacks__180_250d__spec__model__vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 1.471 for 40 degrees of freedom Null hypothesis probability = 2.760123e-02 grouped_stacks__180_250d__spec__model__vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 1.440 for 40 degrees of freedom Null hypothesis probability = 3.536040e-02 grouped_stacks__180_250d__spec__model__vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 1.452 for 40 degrees of freedom Null hypothesis probability = 3.205230e-02 grouped_stacks__180_250d__spec__model__vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 1.422 for 40 degrees of freedom Null hypothesis probability = 4.060786e-02 grouped_stacks__250_300d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.827 for 18 degrees of freedom Null hypothesis probability = 1.724447e-02 grouped_stacks__250_300d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.827 for 18 degrees of freedom Null hypothesis probability = 1.724446e-02 grouped_stacks__250_300d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.827 for 18 degrees of freedom Null hypothesis probability = 1.724446e-02 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.394 for 16 degrees of freedom Null hypothesis probability = 1.336615e-01 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.371 for 16 degrees of freedom Null hypothesis probability = 1.450240e-01 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.250 for 16 degrees of freedom Null hypothesis probability = 2.203802e-01 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.249 for 16 degrees of freedom Null hypothesis probability = 2.208879e-01 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 1.238 for 18 degrees of freedom Null hypothesis probability = 2.195949e-01 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 1.236 for 18 degrees of freedom Null hypothesis probability = 2.209407e-01 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 1.111 for 18 degrees of freedom Null hypothesis probability = 3.330192e-01 grouped_stacks__250_300d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 1.110 for 18 degrees of freedom Null hypothesis probability = 3.336535e-01 grouped_stacks__250_300d__spec__model__vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.130 for 18 degrees of freedom Null hypothesis probability = 3.138891e-01 grouped_stacks__250_300d__spec__model__vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.130 for 18 degrees of freedom Null hypothesis probability = 3.143607e-01 grouped_stacks__250_300d__spec__model__vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.130 for 18 degrees of freedom Null hypothesis probability = 3.138270e-01 grouped_stacks__250_300d__spec__model__vphabs_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.130 for 18 degrees of freedom Null hypothesis probability = 3.142989e-01 grouped_stacks__250_300d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 2.039 for 16 degrees of freedom Null hypothesis probability = 8.288088e-03 grouped_stacks__250_300d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 2.002 for 16 degrees of freedom Null hypothesis probability = 9.901986e-03 grouped_stacks__250_300d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.811 for 16 degrees of freedom Null hypothesis probability = 2.404477e-02 grouped_stacks__250_300d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.778 for 16 degrees of freedom Null hypothesis probability = 2.787827e-02 grouped_stacks__250_300d__spec__model__vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 1.812 for 18 degrees of freedom Null hypothesis probability = 1.853153e-02 grouped_stacks__250_300d__spec__model__vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 1.780 for 18 degrees of freedom Null hypothesis probability = 2.179158e-02 grouped_stacks__250_300d__spec__model__vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 1.610 for 18 degrees of freedom Null hypothesis probability = 4.857580e-02 grouped_stacks__250_300d__spec__model__vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 1.581 for 18 degrees of freedom Null hypothesis probability = 5.545553e-02 grouped_stacks__300_350d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 3.329 for 14 degrees of freedom Null hypothesis probability = 2.225941e-05 grouped_stacks__300_350d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 3.329 for 14 degrees of freedom Null hypothesis probability = 2.225941e-05 grouped_stacks__300_350d__spec__model__phabs_vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 3.329 for 14 degrees of freedom Null hypothesis probability = 2.225941e-05 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 0.8774 for 12 degrees of freedom Null hypothesis probability = 5.697101e-01 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.178 for 12 degrees of freedom Null hypothesis probability = 2.919741e-01 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.170 for 12 degrees of freedom Null hypothesis probability = 2.982396e-01 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.948 for 12 degrees of freedom Null hypothesis probability = 2.466953e-02 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 1.010 for 14 degrees of freedom Null hypothesis probability = 4.396579e-01 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 1.009 for 14 degrees of freedom Null hypothesis probability = 4.401003e-01 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 1.003 for 14 degrees of freedom Null hypothesis probability = 4.468270e-01 grouped_stacks__300_350d__spec__model__phabs_vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 1.003 for 14 degrees of freedom Null hypothesis probability = 4.470131e-01 grouped_stacks__300_350d__spec__model__vphabs_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.145 for 14 degrees of freedom Null hypothesis probability = 3.114799e-01 grouped_stacks__300_350d__spec__model__vphabs_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.145 for 14 degrees of freedom Null hypothesis probability = 3.114799e-01 grouped_stacks__300_350d__spec__model__vphabs_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.145 for 14 degrees of freedom Null hypothesis probability = 3.114799e-01 grouped_stacks__300_350d__spec__model__vphabs_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.145 for 14 degrees of freedom Null hypothesis probability = 3.114799e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C00 Reduced chi-squared = 1.141 for 12 degrees of freedom Null hypothesis probability = 3.206492e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe00__C10 Reduced chi-squared = 1.125 for 12 degrees of freedom Null hypothesis probability = 3.334836e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C00 Reduced chi-squared = 1.065 for 12 degrees of freedom Null hypothesis probability = 3.856516e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec_bbody__XMM_NO__Fe01__C10 Reduced chi-squared = 1.052 for 12 degrees of freedom Null hypothesis probability = 3.966591e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec__XMM_NO__Fe00__C00 Reduced chi-squared = 0.9782 for 14 degrees of freedom Null hypothesis probability = 4.727196e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec__XMM_NO__Fe00__C10 Reduced chi-squared = 0.9646 for 14 degrees of freedom Null hypothesis probability = 4.872644e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec__XMM_NO__Fe01__C00 Reduced chi-squared = 0.9125 for 14 degrees of freedom Null hypothesis probability = 5.443619e-01 grouped_stacks__300_350d__spec__model__vphabs_vapec__XMM_NO__Fe01__C10 Reduced chi-squared = 0.9020 for 14 degrees of freedom Null hypothesis probability = 5.560124e-01