Distributions of effective temperature (top row), surface gravity (second row), metallicity (third row), and microturbulence velocity differences (bottom row) as functions of the main stellar parameters from the APOGEE−GALAH overlapping stellar catalog, for dwarfs and giants combined. The number density of stars (starting with two stars) over the parameter space spanned is provided by the color-coding. The binned star densities over the parameter spaces, and the (overall) mean and standard deviation of parameter differences are shown in each panel as well. Bins representing one star are shown in gray. The horizontal axes indicate T_eff (K), metallicity, log g (dex), and v_micro (km s⁻¹) from APOGEE DR17, and the parameter differences are calculated as Δ(AP) = AP_(APOGEE) − AP_(GALAH).