2.2.9 spase://NASA/NumericalData/Voyager1/Plasma/ASCII/PT12S Voyager 1 Plasma Spectrometer (PLS) High Resolution Plasma Density, Thermal Speed, and Velocity (RTN) Data in ASCII Format 2020-07-07T21:15:55Z The plasma investigation made use of two Faraday-cup detectors, one pointed along the earth-spacecraft line and one at right angles to this line. The earth-pointing detector determined the macroscopic properties of the plasma ions, obtaining accurate values of their velocity, density, and pressure. Three sequential energy scans were employed with (delta E)/E equal to 20, 7.2, and 1.8%, allowing a coverage from subsonic to highly supersonic flow. The side-looking Faraday cup measured electrons in the energy range from 5 eV to 1 keV. The plasma parameters are obtained by finding the best fit of a convected isotropic Maxwellian distribution to the data. One sigma errors are typically less than 0.5% in the speed and VR, less than 5% for the density and thermal speed, and vary greatly for VT and VN. Sampling times range from 12 to 192 sec., with sampling generally more frequent early in the mission. The velocity components are given in the RTN coordinate system, where R is radially outward, T is in a plane parallel to the solar equatorial plane and positive in the direction of solar rotation, and N completes a right-handed system. Please acknowledge John W. Belcher (P.I.) spase://SMWG/Person/John.W.Belcher PrincipalInvestigator spase://VHO/NumericalData/Voyager1/Plasma/PT12S spase://VHO/NumericalData/Voyager1/Plasma/ASCII/PT12S spase://VSPO/NumericalData/Voyager1/Plasma/ASCII/PT12S spase://SMWG/Repository/NASA/GSFC/SPDF Online Open FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/voyager/voyager1/plasma/hires/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/voyager/voyager1/plasma/hires/ In CDF via HTTP from SPDF Text.ASCII spase://SMWG/Repository/MIT_CSR Online Open high resolution ASCII data via ftp from MIT ftp://space.mit.edu/pub/plasma/vgr/v1/key/ Text spase://SMWG/Instrument/Voyager1/MAG ThermalPlasma 1977-01-01T00:00:00 1980-12-31T00:00:00 PT12S Heliosphere.Outer Heliosphere.NearEarth Year Column_1 Year Temporal Day of Year Column_2 Day of year (day 1 is Jan. 1) Temporal Decimal Hour Column_3 Temporal Proton Speed Column_4 km/s Proton FlowSpeed Proton Density Column_5 cm-3 Proton NumberDensity Proton Thermal Speed Column_6 proton temperature in eV = .0052 times the square of the thermal speed km/s Ion ThermalSpeed Velocity R Component Column_7 km/s Cartesian RTN Proton Component.I Velocity Velocity T Component Column_8 WARNING: this parameter is often NOT reliable after 1989 km/s Cartesian RTN Proton Component.J Velocity Velocity N Component Column_9 WARNING: this parameter is often NOT reliable after 1989 km/s Cartesian RTN Proton Component.K Velocity