Fig. C.11
Measured parallaxes for 94 795 quasars plotted against SDSS colour index g′−i′. The black line is for northern (β> 0), the grey-white line for southern ecliptic latitudes (β< 0). The lines connect median values calculated in 50 bins subdividing the data according to g′−i′. Each bin contains about 1600 data points for the northern and 300 for the southern latitudes.
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