∂V_φ/∂[Fe/H] (top panel) and ∂V_φ/∂[α/Fe] (bottom panel) for the three stellar populations, using the APOKASC data (solid black square), the APOGEE-DR16 (green solid diamond). Previous results from literature have been added on the graph: from Recio-Blanco et al. (2014) (red open circle), Lee et al. (2011) (red open square), Adibekyan et al. (2013) (red open triangle), Guiglion et al. (2015) (blue open square), Allende Prieto et al. (2016) (blue open triangle), Peng et al. (2018) (purple open square), and Yan et al. (2019) (purple open circle).