Distributions of Δv_micro (km s⁻¹), Δlog g (dex), Δ[M/H], and Δ[X/H] abundance discrepancies with respect to ΔT_eff for RGB stars common between the APOGEE and GALAH quality data sets. The color-coding indicates the number of stars in the parameter planes, and bins representing one star are shown in gray. Black squares represent the median value within 50 K ranges. Red lines, with a slope of a, are fitted on the individual data points. The mean of the parameter differences (μ) and the standard deviations (σ) are displayed in the top left corner of each panel.