reading the signal…
Signals / Object / Street-level imagery
in Moscow, MOW·counted·3.4K all time
A mound of windblown snow, usually piled against buildings, roads, fences, or other obstacles.
Counted, not streamed: Snowdrift 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.