{"indicator": {"code": "ENV.PM25", "name": "Pollution de l'air (PM2,5)", "unit": "Nombre"}, "source": {"name": "World Bank", "producer": "Banque mondiale", "url": "https://data.worldbank.org", "license": "CC BY 4.0", "license_url": "https://datacatalog.worldbank.org/public-licenses"}, "countries": ["NGA"], "observations": [{"country": "NGA", "date": 2010, "value": 57.0453595776344}, {"country": "NGA", "date": 2011, "value": 60.5981870803509}, {"country": "NGA", "date": 2012, "value": 59.6227203937751}, {"country": "NGA", "date": 2013, "value": 52.2390699243857}, {"country": "NGA", "date": 2014, "value": 54.1305836870948}, {"country": "NGA", "date": 2015, "value": 75.1290695732099}, {"country": "NGA", "date": 2016, "value": 69.3722566585403}, {"country": "NGA", "date": 2017, "value": 68.2246345183228}, {"country": "NGA", "date": 2018, "value": 60.0682766381431}, {"country": "NGA", "date": 2019, "value": 56.1742360202495}, {"country": "NGA", "date": 2020, "value": 63.7025276792271}, {"country": "NGA", "date": 2021, "value": 63.7505486555452}, {"country": "NGA", "date": 2022, "value": 70.6169092406565}, {"country": "NGA", "date": 2023, "value": 65.740618883028}, {"country": "NGA", "date": 2024, "value": null}, {"country": "NGA", "date": 2025, "value": null}], "provenance": {"retrieved_at": "2026-10-05T08:39:33.146597+00:00", "methodology": "µg/m³, exposition moyenne annuelle.", "attribution": "Source : Banque mondiale. Données consultées via BNTIC FasoData.", "note": "BNTIC n'est pas producteur de ces statistiques."}, "meta": {"start": 2010, "end": 2026, "cache_ttl": 43200}, "warnings": []}