Difference between the CSTAT values for every pair of GOOD fits from each spectrum. The top left, top right, bottom left, and bottom right panels show the CSTAT differences, ΔCSTAT, between the other models and BAND, SBPL, COMP, and PL, respectively. Red crosses indicate the latter model in the subtraction is the BEST model (i.e., also a GOOD model), and black crosses indicate the latter model in the subtraction is the GOOD-but-not-BEST model. The numbers in brackets indicate the number of pairs of models compared (those spectra with only one GOOD and/or BEST fits were not compared). The two dashed lines indicate 11.83 and 11.83 + 8.58 = 20.41 in the top panels and −11.83 and 8.58 in the bottom left panel. The solid line separates the logarithmic positive y-axis and linear negative y-axis. One black cross for CSTAT(PL) − CSTAT(BAND) = −95, about 20 black crosses for CSTAT(SBPL) − CSTAT(COMP) and CSTAT(PL) − CSTAT(COMP) down to ~–1700, and about 20 black crosses for CSTAT(Model) − CSTAT(PL) down to ~–6800 are not shown for clear display purposes.