reading the signal…
Signals / Event / Building permits stream
in Minneapolis, MN·counted·161 all time
Official permission for digging or removing earth, typically shown as a construction authorization.
Counted, not streamed: Excavation 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.