Preliminary tests at almost 19 km above the surface. The plate is about 148.5 km square.
Level 7 data is essentially a Mercator map that is 131072 x 65536 pixels. That comes out to 3.447 pixel per km.
The equatorial circumference is 38,026 km with no oblateneess – Venus rotates so slowly that it doesn’t bulge at the equator!