2.2.2 spase://NASA/NumericalData/Helios1/E1/PT1H Helios 1 E1 (Rosenbauer) Hourly Plasma Data 2021-03-11T18:39:11Z 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. 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 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