Every point where the field was measured, shown where it sits on the accessory. Pick a setting and a distance from the surface, then hover over a point (or tap it) to see its position and the field strength measured there.
Illustrative example: real Gauss Labs measurements of a Donut Coil, shown to illustrate what this coil type looks like. It is not a spec for a specific product. Setting 5 was scanned along all four axes; the other four settings were scanned along a single line out from the center, which is the usual bench protocol.
Loading the measured points.