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Table 4

Summary of measured overdensities.

Field ρ ρ d δ σ δ
(1) (2) (3) (4) (5)

J1030 16 13 2.0 3.3
J1148 10 8 0.9 1.9
J1048 9 7 0.6 1.7
J1411 12 10 1.3 2.5

Notes. (1) QSO field. (2) Number of observed dropouts defined as objects with zTOT < 25, rAP > 27.2, iz > 1.4. (3) Same as Col. 2, but corrected for the contamination from bluer objects caused by photometric errors (see text for details): these are the numbers adopted to compute the overdensities and their significance, shown in Cols. 4 and 5, respectively. (4) Overdensity , where , as estimated from the SXDS. (5) Significance of the measured overdensities (expressed in Gaussian-equivalent probabilities; see text for details).

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