OSM Mapping Equity — Tucson, AZ (2 sq mi tiles, real OSM vs Microsoft footprints)
Tract OSM attribute completeness (green = well-mapped, red = under-mapped).
Red-outlined tracts are data deserts (bottom quartile).
Spearman income~POI diversity ρ=-0.23 ·
Moran's I 0.08 · divide n/a