Spatial distribution of sources with z = 2.15–2.20 in the field of PHz G237.01+42.50. Different colors correspond to the velocity offset from the annotated mean redshift as indicated by the color bar. AGN are sources spectroscopically classified AGN, and black stars are X-ray luminous AGN. A gray circle with radius corresponding to 2 Mpc comoving at the annotated mean redshift and centered on the structure center is shown. Dashed rectangles delineate the A, B, and C components described in Sect. 3.4, and shown in Fig. 6.