Parallax difference ϖ_Gaia − ϖ_seismo for RGB stars, with the asteroseismic parallax derived from raw scaling relations, as a function of ϖ_Gaia, G, ν_max, G_BP − G_RP, M_PARAM, and [Fe/H]. The distribution of the N realisations of the RANSAC algorithm is indicated by the grey-shaded region and the yellow line displays the average linear fit, for which the relation is given at the top of each subplot. The values of for RGB stars are given in Table 1. The summary statistics are: as, as, and z = 0.89. The black dashed lines correspond to the average linear fits when a ±100 K shift in T_eff is applied.