Data Set Overview
    =================
      This data set contains Ulysses Energetic Particle Composition
      Experiment (EPAC) pulse height analysis data in 1 day (24 hr)
      files. Data are provided for the time period from 1992-Jan-25 to
      1992-Feb-29.

    Data
    ====
      Most files are provied in both binary and ascii formats that
      contain the same information but in a slightly different format.
      The file naming convention is EV92xxx (.BIN binary) or (.TAB ascii
      table) where the xxx is the day of 1992. Each file is described by
      a detached PDS label file (.LBL).

      The data entries in the ascii files are integer energy and delta
      energy of each event starting at midnight for each day.
      Time values are not assigned to individual event. The entries are
      separated by blanks. Then the total length of the ASCII
      records are: 41 Bytes with a variable number of records per file.

      The data entries include:


        E            Energy channel
        dE           Delta energy channel
        ER           Energy range of the energy channel
        SPiD         Species ID
        TiD          Telescope ID
        SEiD         Sector ID


      The record structure is as follows:


         E  dE      ER      SPiD    TiD    SEiD
      --------------------------------------------
         3   0       1       0       0       0
         0   3       1       0       1       3
         2   1       1       0       2       3
       253   6       0       1       2       1
         1   3       1       0       1       0
        12   0       1       0       1       3
         5   0       1       0       3       2
        29   9       0       1       2       3
       254   4       0       1       0       2
        85   9       0       1       2       2
       170   6       0       1       0       2

      Format: (2(1X,I3),4(7X,I1))

      In addition to the data files, the EPAC instrument team has
      provided two pieces of IDL code. The program CHANTOEN.TXT will
      convert EPAC channel numbers to energy (MeV). The program
      EPAC_EV.TXT reads the all available PHA data and generates a
      postscript plot file 'epac-ev.ps'. The postscript output of
      EPAC_EV.PRO for this data submission also included with this
      archive (EPAC_EV.PS). A second postscript file, (EXAMPLE.PS) shows
      a more fully annotated version of the output of this program for
      170 days in the solar wind in 1998. In addition to the data, the
      annotated plot shows the theoretical traces of several atomic
      species (He - Fe) for comparison purposes.

      GIF files have been made of the postscript provided by the EPAC
      team by the PDS (EPAC_EV.GIF,  EXAMPLE.GIF) to facilitate viewing
      with web browsers.

Confidence Level Overview
    =========================
      None provided. For more information regarding the confidence
      level of the data set please contact:
           ERHARD KEPPLER
           Max-Planck-Institut fur Aeronomie
           Postfach 20
           37189 Katlenburg-Lindau
           GERMANY
           Phone: 49-555-697-9296   Fax: 49-555-697-9240
           Internet: keppler@pgate2.mpae.gwdg.de