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/HEO/EXP/PT30S NASA NumericalData HEO-1 and HEO-3 Data from the EXP instrument in 30-second averages 2025-12-04T13:29:21Z 2020-07-07T21:14:34Z Only known prior ReleaseDate of the metadata 2025-12-04T13:29:21Z Added MetadataRightsList. Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB See ftp://ftp.virbo.org/obrien/heo/ascii/README.txt Cite http://www.stormingmedia.us/69/6997/A699774.html or http://www.stormingmedia.us/69/6997/A699774.html spase://SMWG/Person/Joseph.F.Fennell DataProducer spase://SMWG/Person/T.Paul.OBrien DataProducer ViRBO web page for this dataset http://virbo.org/HEO Top-level web page for data set spase://ViRBO/NumericalData/Aerospace/HEO/EXP/PT30S spase://VSPO/NumericalData/HEO/EXP/PT30S spase://SMWG/Repository/ViRBO Online Open Original ASCII files http://mag.gmu.edu/ftp/users/obrien/heo/ascii/ Text ASCII http://virbo.org/ EnergeticParticles 1994-05-06T00:00:00.00000 2006-08-16T23:59:59.99999 PT30S Earth.Magnetosphere