Left panel: LFs of clusters (numbers per square arcmin) for different radius intervals. Under the assumption that the LFs are not radius dependent, we estimate the incompleteness in the two faintest magnitude bins. (1) Plus signs: 0.15′–0.8′; (2) polygons: 0.8′–1.3′; (3) squares: 1.3′–1.8′; (4) triangles: 1.8′–2.3′; (5) crosses: 2.3′–2.8′. Right panel: average density after corrections in the radial interval 0.15′–1.8′. A Gaussian with a peak magnitude of R = 25.8 and σR = 1.7 is a good fit to the data.
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