rdefra                  rdefra: Interact with the UK AIR Pollution
                        Database from DEFRA
stations                List of all the DEFRA air quality monitoring
                        stations with complete coordinates
ukair_catalogue         Get DEFRA UK-AIR stations metadata
ukair_get_coordinates   Get Easting and Northing coordinates from DEFRA
ukair_get_hourly_data   Get hourly data for DEFRA stations
ukair_get_site_id       Get site IDs for DEFRA stations
