Multiple sourcesConstrained estimates, total number of people per grid-cell. The dataset is available to download in Geotiff format at a resolution of 3 arc (approximately 100m at the equator). The projection is Geographic Coordinate System, WGS84. The units are number of people per pixel. The mapping approach is Random Forest-based dasymetric redistribution. The difference between constrained and unconstrained you can read on this page: https://www.worldpop.org/methods/top_down_constrained_vs_unconstrainedworldpop-population-counts-2015-2021-sdnHumanitarian Data ExchangePublicSudan - Spatial Distribution of Population (2015-2021)DatasetsSudan2015-01-01 to 2021-12-31