The colored area indicates the study area, and the gray area shows all States not included in the data collection. Each dot corresponds to a market surveyed: 6 in Plateau, 2 in Bauchi, and 2 in Kano.
Data sources: (Administrative boundary layer: GADM database (
The map was generated using shape files and data using qGIS {version 3.2 (Bonn)} which is open so
The shape files used to construct the map are from OpenAfrica, covered by Creative Commons Attrib
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