Average residual as a function of ν_eff and G using the Lindegren zero point (left) and the one proposed here (right) for the full sample. The left bar shows the scale in μas. Each cell hasa size of 0.05 μm⁻¹ × 0.5 mag. Cells with less than ten objects used to calculate the average include the number of objects. The color scale is capped for values above 60 μas or below −60 μas for display purposes but some cells (seven in the left panel, and four in the right panel) are outside that range. The upper x axes use Eq. (4) of L21a to transform from ν_eff to G_BP − G_RP.