Coronal abundances against three independent variables, similar to Fig. 13. Left: plotting abundances against intrinsic Gaia (G − G_RP)₀ colour, we find marginally depressed abundances for late-K and early-M stars, although with a large scatter. Colours and symbols are as in Fig. 11. Centre: plotting against L_X/L_bol suggests that the highest coronal abundances are found among inactive stars. Right: plotting abundances against solar-scaled Rossby number (Ro/Ro_⊙) indicates that marginally higher coronal abundances are found for stars with the highest and lowest values of Ro/Ro_⊙.