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Helios 1 hourly merged magnetic field and plasma data was created at NSSDC for COHOWeb. The dataset provides magnetic field vectors and plasma flow direction angles in RTN coordinates, with spacecraft position data in Heliographic inertial coordinates. It was last updated on March 13, 2026, by the National Aeronautics and Space Administration.
License is listed as 'other-license-specified'; specific terms must be reviewed before use.