Spatial distribution (at 0.°5 resolution) of astrometric residuals in the Legacy Surveys DR6 and DR7 releases, computed relative to Gaia DR1 survey. While the rms scatter in the residuals is small (﹩{\sigma }_{{\rm{R.A.}},\mathrm{decl}.}\approx 2﹩ mas), there remain spatially coherent systematic offsets at the <±5 mas level in the different survey regions. The systematic offset at the decl. +34° boundary is due to differences in the way the astrometric zero points were computed in the DR6 and DR7 releases, and will be corrected in the Legacy Surveys DR8 release.