Map of $|q_v^{(2)}/q_v^{(1)}|$ at N_side = 512. The black contour traces the N_side = 256 footprint used in Fig.1, and the thin lines mark the pixel boundaries. The white pixels at the outskirts of the region indicate areas with no decomposition information, while the white pixels within the footprint indicate locations where there is no evidence of the nearby cloud.