{
    "aurn": "http://uk-air.defra.gov.uk/openair/R_data/AURN_metadata.RData",
    "saqn": "https://www.scottishairquality.scot/openair/R_data/SCOT_metadata.RData",
    "aqe": "https://airqualityengland.co.uk/assets/openair/R_data/AQE_metadata.RData",
    "waqn": "https://airquality.gov.wales/sites/default/files/openair/R_data/WAQ_metadata.RData",
    "ni": "https://www.airqualityni.co.uk/openair/R_data/NI_metadata.RData"
}
