Relative differences as a function of T_eff between luminosities calculated from the Gaia EDR3 BP and RP bands relative to those from the G-band. Spectroscopic values from SPC were used in the analysis. The violin inserts show the distributions of the relative differences, with the median indicated by a full black line and the standardised MAD by the darker-coloured interval. Markers with thick line widths show stars with a corrected version⁷of phot_bp_rp_excess_factor> 0.05 (see Riello et al. 2021), indicating potentially poor photometry.