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/Helios1/E1/PT1H NASA NumericalData Helios 1 E1 (Rosenbauer) Hourly Plasma Data https://doi.org/10.48322/nvtr-cd40 2025-12-04T13:29:19Z 2021-03-11T18:39:11Z Only known prior ReleaseDate of the metadata 2025-11-14T16:02:21Z Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB 2025-12-04T13:29:19Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB These hourly averaged solar wind plasma data from the E1 Plasma Detectors (Rosenbauer) onboard the Helios 1 spacecraft include time, earth-sun-Helios angle, sun-Helios distance (AU), Carrington longitude of Helios, solar-ecliptic latitude, Carrington rotation number, proton bulk speed, temperature, number density, flow angles of ecliptic elevation and azimuth, standard deviations of the plasma parameters, and the number of data points in the hourly averages. Please acknowledge Helmut Rosenbauer (P.I.) and NSSDC. Rosenbauer, Helmut R. 2025-11-14T16:02:21Z Space Physics Data Facility spase://SMWG/Person/Helmut.R.Rosenbauer PrincipalInvestigator Readme file at SPDF https://spdf.gsfc.nasa.gov/pub/data/helios/helios1/plasma/hour/he1plahr_fmt.txt spase://VSPO/NumericalData/P_HELIOS1_HDR_E1_PLASMA_1HR spase://VSPO/NumericalData/Helios1/E1/PT1H 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/helios/helios1/plasma/hour/ Via SPDF ftp HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/helios/helios1/plasma/hour/ In CDF via HTTP from SPDF Text spase://SMWG/Instrument/Helios1/E1 ThermalPlasma 1974-12-12T00:00:00 1984-12-29T00:00:00 PT1H Heliosphere.Inner