reading the signal…
Signals / Object / Street-level imagery
in Sacramento, CA·counted·18 all time
Damage in a building foundation, typically appearing as a visible split, fracture, or widening line in concrete or masonry.
Counted, not streamed: Foundation Crack 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.