Distortions of the squared 3x3 degree² sky tiles (in tangential projection around the center of the sky tile) when they are differently projected. The other projections represented here are CYP, CEA, AIT, ZEA, and orthographic (SIN) projections. Only the northwest Galactic hemisphere is shown. In a nonequal area projection (e.g., CYP), the shape of a region is distorted and the projected area of each equal sky tile is not conserved. The sky tiles at higher Galactic latitudes appear to be stretched.