iso ISO-3 code of given administrative unit (or the ISO code of parent unit for administrative-level 1 units).
admn_level administrative level of the given administrative unit - either 0 (national), 1 (first-level division), 2 (second-level division), 3 (third-level division).
name_0 name of admin0 parent of a given administrative unit (or just shapefile name for admin0 units)
id_0 id code of admin0 parent of the current shapefile (or just shapefile id for admin0 units)
type_0 if applicable, type of administrative unit or admin0 parent
name_1 name of admin1 parent of a given administrative unit (or just shapefile name for admin1 units); NA for admin0 units
id_1 id code of admin1 parent of the current shapefile (or just shapefile id for admin1 units); NA for admin0 units
type_1 if applicable, type of administrative unit or admin1 parent
name_2 name of admin2 parent of a given administrative unit (or just shapefile name for admin2 units); NA for admin0, admin1 units
id_2 id code of admin2 parent of the current shapefile (or just shapefile id for admin2 units); NA for admin0, admin1 units
type_2 if applicable, type of administrative unit or admin2 parent
name_3 name of admin3 parent of a given administrative unit (or just shapefile name for admin3 units); NA for admin0, admin1, admin2 units
id_3 id code of admin3 parent of the current shapefile (or just shapefile id for admin3 units); NA for admin0, admin1, admin2 units
type_3 if applicable, type of administrative unit
source source of administrative boundaries
geometry geometry of administrative boundaries
country_level composite iso_admn_level field.