Best-fit results from each atmospheric grid using the setup of run v07 for the companion CD-35 2722 b. On the left, we display the observed spectrum (black) and the best-fit models from each grid in the different colors, offset vertically for clarity. The ${\chi }_{red}^2$ values for each fit are shown on the right, on top of each model fit. The bottom-left panel shows the residuals of each fit. On the right, a spider plot compares the derived posterior values among the grids, with the light-colored area representing 99.73% confidence intervals on the posteriors. For this target, all grids except ATMO perform similarly in terms of ${\chi }_{red}^2$ and best posterior values. The T_eff values are consistent at approximately 1650 K, while log (ɡ) varies between 4.0 and 4.3 dex.