- Cross-border commuters from Rhineland-Palatinate to Luxembourg at place of residence (Kreise): 2013-2023 - Territorial entities: Kreise - Commuting data sources: IGSS 2024. Calculations: OIE/IBA 2024 - Geodata sources: GeoBasis-DE / BKG. Harmonization: SIG-GR / GIS-GR 2024

- Cross-border commuters from France to Rhineland-Palatinate at place of work (Kreise): 2013-2023 - Territorial entities: Kreise - Commuting data sources: Bundesagentur für Arbeit. Calculations: OIE/IBA 2024 - Geodata sources: GeoBasis-DE / BKG. Harmonization: SIG-GR / GIS-GR 2024

- Cross-border commuters from Saarland to Luxembourg at place of residence (Kreise): 2013-2023 - Territorial entities: Landkreise - Commuting data sources: IGSS 2024. Calculations: OIE/IBA 2024 - Geodata sources: GeoBasis-DE / BKG. Harmonization: SIG-GR / GIS-GR 2024

- Cross-border commuters from Lorraine to Luxembourg at place of residence (arrondissements): 2013-2023 - Territorial entities: arrondissements - Commuting data sources: IGSS 2024. Calculations: OIE/IBA 2024 - Geodata sources: IGN France. Harmonization: SIG-GR / GIS-GR 2024

- Cross-border commuters from Wallonia to France at place of residence (provinces): 2013-2023 - Territorial entities: provinces - Commuting data sources: INAMI. Calculations: OIE/IBA 2024 - Geodata sources: NGI-Belgium. Harmonization: SIG-GR / GIS-GR 2024

Construction restrictions in groundwater protection zones. For more details, please refer to the following links: Grand-Ducal Regulation of July 9, 2013 (http://legilux.public.lu/eli/etat/leg/rgd/2013/07/09/n20/jo) Specific grand-ducal regulations creating groundwater protection zones (https://eau.gouvernement.lu/fr/administration/Legislation/Reglements-grand-ducaux-portant-creation-de-zone-de-protection.html)

- Cross-border commuters to Luxembourg at place of residence in 2023 - Territorial entities: Kreise, arrondissements - Commuting data sources: IGSS. Calculations: OIE/IBA 2024 - Geodata sources: GeoBasis-DE / BKG, IGN France, NGI-Belgium. Harmonization: SIG-GR / GIS-GR 2024

- Cross-border commuters from Wallonia to Luxembourg at place of residence (Arrondissements): 2013-2023 - Territorial entities: Arrondissements - Commuting data sources: INAMI. Calculations: OIE/IBA 2024 - Geodata sources: NGI-Belgium. Harmonization: SIG-GR / GIS-GR 2024

- Projection of working age population (20-64 years) 2024-2050 - Territorial entities: arrondissements (Wallonie), départements (Lorraine), Grand-Duché (Luxembourg), Kreise (Saarland, Rheinland-Pfalz) - Statistical data sources: Destatis, Eurostat, Statbel, STATEC, Statistisches Amt Saarland, Statistisches Landesamt Rheinland-Pfalz. Calculations: OIE/IBA 2024 - Geodata sources: ACT Luxembourg, IGN France, GeoBasis-DE / BKG, NGI-Belgium. Harmonization: SIG-GR / GIS-GR 2024

- Change in working age population (20-64 years) 2000-2023 (Lorraine: 1999-2021) - Territorial entities: arrondissements (Lorraine, Wallonie), Grand Duchy (Luxembourg), Kreise (Saarland, Rheinland-Pfalz) - Statistical data sources: Destatis, INSEE, Statbel, STATEC. Calculations: OIE/IBA 2024 - Geodata sources: ACT Luxembourg, IGN France, GeoBasis-DE / BKG, NGI-Belgium. Harmonization: SIG-GR / GIS-GR 2024