{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "NASA Space Physics Data Facility", "hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"}, "description": "Various summaries of Birkeland current system magnetic field data from ~70 Iridium spacecraft; cf. Anderson et al, JGR, 107, SMP-11, 2002.", "identifier": "/SDE/SPASE_JSON/|affde8e16fbef7a6c17311d3b63a3a1c", "keyword": ["activityindex", "magneticfield"], "license": "https://www.usa.gov/government-works", "modified": "2026-06-08", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "JHU/APL"}, "theme": ["Heliophysics"], "title": "Iridium magnetic field digital indices"}