Glossary

ADM0–ADM3 denote nested administrative levels, from country or territory to progressively finer subdivisions. unit_id is the dataset's unit identifier; names and identifiers may change when units split or merge, so use the event table to trace transitions.

geom_origin records geometry provenance, conf_grade summarizes confidence, and date_precision describes how precisely an event date is known. GeoParquet is used for analytical time series, GeoJSON for web-friendly global snapshots, and PMTiles for efficient map display.