Parallax bias Z₅ (top) and Z₆ (bottom) computed according to Tables 9 and 10 for a representative sample of sources with five- and six-parameter solutions in EDR3. The dots show values for the complete sample of sources (for G < 11.5) or for a random selection (G > 11.5). The colour scale indicates the mean ν_eff or at a given point, thus giving an impression of the mean colour dependence of the bias. The black curves show the 1st, 10th, 50th, 90th, and 99th percentiles. The thick curve is the 50th percentile or median.