Distribution of the mean values of G for the main Gaia DR3 components shown as histograms with bins of 0.1 mag in width. Top panel: histograms for the basic observational data in Gaia DR3 (spectra, radial velocities, v_broad, photometric time series). Middle panel: histograms for the stellar astrophysical contents, and bottom panel: non-stellar astrophysical contents. The sharp transitions in the top and middle panels at G = 17.65 and G = 19 are caused by the limit on the brightness of sources for which BP/RP spectra are published and the limit up to which astrophysical parameters were estimated. The SSO histogram shows the distribution of the transit-level G-band magnitudes (see Tanga et al. 2023, for a distribution of solar system objects in absolute magnitude H). The QSO and galaxy candidate histograms extend to very bright magnitudes which is a consequence of favouring completeness over purity in these samples, and not applying any filtering to remove them (see Gaia Collaboration 2023b).