2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/Aureol3/ONCH-TBF/VLF/PT0.3S NASA NumericalData Aureol 3 VLF Data 2025-12-04T13:28:30Z 2020-07-07T21:14:17Z Only known prior ReleaseDate of the metadata 2025-12-04T13:28:30Z Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. ZCB This data set contains power of electromagnetic wave components from narrow band (10%) filters at 140, 450, 800, 4500, and 15000 Hz. For any given time segment the power for any one of five predefined pairs of the five measurable field components (EZ, EH, BZ, BX, BX45) were measured and are included. The components of electromagnetic field are named by their direction in the satellite frame. Spacecraft position in geographic and magnetic coordinates are also included, along with time and an indication of which pair of components were measured. Each data file corresponds to one memory readout, and typically consists of a few continuous-data segments. The first several records in each file constitute a header giving the time spans of the segments, the time resolution, and other common information. The data records are in ASCII. spase://SMWG/Person/Natalia.E.Papitashvili GeneralContact spase://VSPO/NumericalData/Aureol3/ONCH-TBF/VLF/PT0.3S spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/arcad/vlf/ Arcad_VLF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/arcad/vlf/ Arcad_VLF Text CALIBRATED spase://SMWG/Instrument/Aureol3/ONCH-TBF Waves 1981-09-30T00:00:00 1984-07-21T23:59:59 PT0.3S Earth.NearSurface.Ionosphere Earth.Magnetosphere