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High Resolution Magnetic Field Reduced Data Records (RDR)


Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1981-01-01 to 1981-01-04


This magnetic field data set is on binary magnetic tape created on an SEL 32 computer. It is known as an RDR tape, containing a sample of the high-resolution reduced magnetometer data. The first record of each file is a 3120-byte header record, and all other records are 3120-byte data records. Each header record contains the year, day of year (Jan. 1=1), spacecraft ID, program version, coordinate system (the ISEE 3 spacecraft coordinate system), date of reduction, and fill data. Each data record contains: the number of data points in the record; the average frame period (microseconds); frame counter; fill, bit rate, time quality, and spacecraft position flags; the spacecraft position in GSE coordinates; and the ground received time (ms) and magnetic field Cartesian components for each data point. If there are fewer than 192 points in the data record the remainder of the record is filled with zeros.

Data are available online at


  • Space Physics Data Facility


  • Space Physics: Heliospheric Studies
  • Space Physics: Magnetospheric Studies


  • 78-079A-02E

Additional Information



Questions or comments about this data collection can be directed to: Dr. H. Kent Hills.



NameRoleOriginal AffiliationE-mail
Mr. Robert M. CandeyGeneral ContactNASA Goddard Space Flight
Dr. Edward J. SmithData ProviderNASA Jet Propulsion
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