Directory name : 
     ./keof/combinations/1998/

Directory contents :
     _README_
          this file (text file)

     comb98.eop
          values at midnight of polar motion, UT1, and their rates
          spanning January 20.0, 1962 to January 16.0, 1999
          at 5-day intervals (text file)

     comb98.lod
          values at midnight of non-tidal length-of-day changes
          spanning January 20.0, 1962 to January 16.0, 1999
          at 5-day intervals (text file)

     pole98.pm
          values of polar motion and its rate-of-change
          spanning January 20, 1900 to December 22, 1998
          at 30.4375-day intervals (text file)

     space98_midnight.eop
          values at midnight of polar motion, UT1, and their rates
          spanning September 28.0, 1976 to January 16.0, 1999
          at 1-day intervals (text file)

     space98_midnight.lod
          values at midnight of non-tidal length-of-day changes
          spanning September 28.0, 1976 to January 16.0, 1999
          at 1-day intervals (text file)

     space98_noon.eop
          values at noon of polar motion, UT1, and their rates
          spanning September 28.5, 1976 to January 16.5, 1999
          at 1-day intervals (text file)

     space98_noon.lod
          values at noon of non-tidal length-of-day changes
          spanning September 28.5, 1976 to January 16.5, 1999
          at 1-day intervals (text file)

     SpaceCombPole98.pdf
          Gross, R. S., Combinations of Earth orientation measurements:
          SPACE98, COMB98, and POLE98, JPL Pub. 99-6, 24 pp., Jet 
          Propulsion Lab., Pasadena, Calif., 1999. (PDF file)