reading the signal…
Signals / Object / Mapped places
in Berlin, BE·counted·40 all time
A grass surface is an area covered with grass, typically appearing as a green lawn, meadow, field, or roadside verge.
Counted, not streamed: Surface Grass has no time series, so it is read as a footprint across places. All-time count by city.
Things that physically exist: street furniture, signs, buildings. All-time counts.