Fig. 2

Graphic representation of the neighborhoods in which the remaining local zonal position corrections are removed. The mean neighborhood is 4.7 deg, and there are only 13.6% neighborhood radii larger than 6deg. As before, owing to the large number of quasars, the sample is a representation 1:1000, to 314 elements (since the SDSS is tightly packed, this representation remains adequate).
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