reading the signal…
Signals / Event / Building permits stream
in Minneapolis, MN·counted·1.5K all time
Official approval for constructing or operating a swimming pool or spa, typically shown as a permit document.
Counted, not streamed: Pool Permit has no time series, so it is read as a footprint across places. All-time count by city.
Things that happen: permits, collisions, crimes, inspections. All-time counts.