Parallaxes for 1.2 million quasars with five-parameter solutions in Gaia EDR3. Yellow dots show theindividual values plotted vs. magnitude (panel a), effective wavenumber (panel b), and sine of ecliptic latitude (panel c). Open black circles show mean values of the uncorrected parallaxes (ϖ) in bins of magnitude etc., and filled blue circles show mean values of the corrected parallaxes (ϖ − Z₅) in the same bins. Mean values are calculated using weights . Error bars indicate the estimated standard deviation of the weighted mean in each bin.