Several examples showing the performance of our narrow-band fitting of Hγ for the BestFit parameter solution (shown in red) compared with the Hγ line profile of an alternate model generated using a temperature computed based on Gaia G_BP − G_RP color (shown in magenta). Both sets of model spectra are compared with the original MaStar spectrum shown in black. The relative position in parameter space of each model is shown in the three panels on the right.