Maps showing provincial prevalence of LBW (top row) and coverage of ≥4 ANC visits (bottom row) in Zambia across survey years. Darker shading indicates higher values. All estimates are survey-weighted. Grey areas indicate provinces not observed in a given survey year (Muchinga Province absent in early surveys). Provincial boundary shapefiles sourced from GeoBoundaries (https://www.geoboundaries.o…), licensed under CC BY 4.0.