Overall Score: Takes the average value of all the below.

Valid Geometry: Layers which have valid geometry. Valid geometry is defined by having no empty geometries, only containing polygons (no points or lines), not containing self-intersecting rings, using WGS84 CRS (EPSG:4326), and has a valid bounding box.

Valid Topology: Layers which have valid topology. Valid topology is defined as having no triangle polygons, sliver gaps or overlaps within a layer, with each polygon being fully contained within their parent.

Equal Area: Layers which all share the same area. Layers not sharing the same area may have empty areas representing water bodies whereas other layers have them filled out.

Sq. km: Layers which have an area attribute in square kilometers and value matches area calculated above using NASA EASE-Grid 2.0.

P-Codes: Layers which have all required P-Code columns (ADM2_PCODE), with no empty cells, only alphanumeric characters, starting with a valid ISO-2 code, no duplicate codes, all codes within a column having the same length, and hierarchical nesting codes.

Names: Layers which have all required name columns (ADM2_EN), with no empty cells, no duplicate rows, no double / leading / trailing spaces, no columns all uppercase / lowercase, no cells lacking alphabetic characters, and all characters matching the language code.

Languages: Layers which have at least 1 language column detected, all language codes used are valid, a romanized language is featured first, and layers don't have more languages than their parents.

Date: Layers which have a valid date value for their source.

Other: Layers which have no fields other than expected values.