This directory consists of annual subdirectories for 1991 to 2000 that contain daily files of 1-min magnetic field data. Each such annual subdirectory also contains a subdirectory of daily attribute files, indicating passage through NSSDC's DIOnAS permanent archiving process. This data set was created by the IMP 8 magnetic field team as a contribution to the collection of key parameter data associated with the ISTP program. The content and format of each 1-min record is given at https://spdf.gsfc.nasa.gov/pub/documents/old/miscellaneous_documents_from_nssdc/b46483.txt Brief descriptions of this data set and its source spacecraft and experiment are in the NSSDC information files at http://nssdc.gsfc.nasa.gov/database/MasterCatalog?ds=73-078A-01L Note that a later 1-min magnetic field data set, spanning 1973-2000 and also containing plasma parameters for solar wind and magnetosheath orbit phases, is available at https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/merged/ ----------------------------------------------------------------- Related data and directories: SPDF Data and Orbits Services -------------- SPDF Contact: Natalia Papitashvili , Please acknowledge NASA's Space Physics Data Facility for data usage. Authorizing NASA Official: Dr. R.E. McGuire, Head, SPDF, NASA Goddard Space Flight Center 301-286-7794, e-mail: Robert.E.McGuire@nasa.gov ----------------------------------------------------------------------- -----------------------------------------------------------------------