Histogram of DR3 photometric FoV observations. Top panel: Histogram of measurement numbers for the G band of a random sample of 10.5 million stars (black line); the grey line shows the same but for the 10.5 variable sources only. We see that the variability analysis favours a high number of measurements, as expected. The abscissa is truncated to 120, though the distributions have long tails up to 265. Lower panel: Histogram of DR3 photometric FoV observations restricted to the 10.5 million variable sources in the G (grey), G_BP (blue, dashed line), and G_RP (red) bands. The median numbers of measurements of G, BP, and RP are 44, 40, and 41.