Cosmologically corrected radial surface brightness profiles extracted in four angular sectors around J1620+4334. Left: From coadded Lyα+cont, Right: From coadded CIV+cont. The conical regions correspond to position angle intervals of 50°–120° (mint green), 140°–210° (blue), 230°–300° (pink), and 320°–30° (olive). The circularly averaged SB profile are in black. The distances of the quasars from the center of J1620+4334 are indicated by red circles, and the gray curve is from the PSF.