Sky distribution of our LAEs (colored dots). The HLQSO is located at the origin (0,0). North is up, and east to the left. The colors indicate their rest-frame Lyα equivalent width, and the sizes indicate their UV absolute magnitude (the larger, the brighter). Gray contours indicate their overdensity δ, with each level showing a different group defined in Table 1. Concentric black circles indicate radii with which the distance subsamples are defined.