Make sure to use the fullscreen button.

Dark blue is Google viewport based radius for accurate and 20 km for hardcoded (hc) data without a viewport.
In the database this is called search_radius

Light blue was calculated as blue (Google) * 1.5 + 10 km
In the database this is called discover_radius

Light green is 50km
This cannot be changed in the database.

The radius field must not be changed as it is currently in use.