Every point of the scan pattern, shown where it sits on the accessory. Choose a setting when the test has more than one, then click or tap a layer in the stack to the left of the picture (above it on a phone). Hover over a point, or slide a finger across the points, to see its position and the field strength there. Every layer is colored on one scale, so a layer farther from the surface reads cooler. Pinch, or hold Ctrl and scroll, to zoom in.
Illustrative example: a field for a Multi-Coil Mat, shown to illustrate what this coil type looks like. It is not a spec for a specific product. The values are generated from the mat's coil layout. The points follow the Fine scan plan the Gauss Labs Field Mapper lays on this mat: each coil gets its own grid of five rows and five columns, 908 points a layer on five layers. The four settings are that one field at four drive levels.
Loading the field points.