Data Set Overview
      =================
      This data set includes Voyager 2 Saturn encounter magnetometer
      data from the Low Field Magnetometer (LFM) resampled at a 9.6 second
      sample rate from the 60 msec instrument sampling rate. Data coverage
      begins in the solar wind and continues until at least the first
      magnetopause crossing. The data are given in Kronographic (L1)
      coordinates. The data set is composed of the following columns:
      1) time - UT of the sample in the format yyyy-mm-ddThh:mm:ss.sssZ,
      2) spacecraft clock values (m65536:mod60:fds_line), 3) mag_id -
      magnetometer id (1 = LFM, 2 = HFM), 4) Br - radial (Saturn to
      spacecraft) B-field component, 5) Btheta - North/South (L1) B-field
      component (positive southward), 6) Bphi - azimuthal (L1)
      B-field component (positive eastward), 7) Bmag - magnitude of the
      averaged magnetic field components, 8) avg_Bmag - average of the
      magnetic field magnitudes, 9) delta - magnetic latitude =
      arcsin(Btheta/Bmag), 10) lambda - longitude = 180. - atan(Bphi/-Br),
      11-13) rms_br, rms_bt, and rms_bn - rms vectors, 14) npts - number
      of points in average.  All magnetic field observations are measured
      in nanoTesla. All of the magnetic field data are calibrated (see the
      instrument calibration description for more details).  These data
      are provided in a Saturn centered spherical system (L1), based on the
      Saturn Longitude System (Voyager Measurements of the Rotation Period
      of Saturn's Magnetic Field, Desch and Kaiser, JGR, 8, 253, 1981).
      The the magnetic field components are:
        BR     - radial B-field component (along the Saturn to spacecraft
                   line) positive away from Saturn
        BTHETA - North/South (L1) B-field component, positive southward
        BPHI   - azimuthal (L1) B-field component, positive eastward.
 
      Processing Level Id            : 4
      Software Flag                  : Y
      Processing Start Time          : 1988-09-21
 
      Parameters
      ==========
      Sampling Parameter Name        : TIME
      Data Set Parameter Name        : MAGNETIC FIELD VECTOR
      Sampling Parameter Resolution  : 9.600000
      Minimum Sampling Parameter     : 19770820120000.000000
      Maximum Sampling Parameter     : UNK
      Sampling Parameter Interval    : 9.600000
      Minimum Available Sampling Int : 0.060000
      Data Set Parameter Unit        : NANOTESLA
      Noise Level                    : 0.006000
      Sampling Parameter Unit        : SECOND
 
        PARAMETER  RESOLUTION  DESCRIPTION
        NAME       (UNITS)
 
        time       9.6 Sec     time of the sample (UT) in the
                               format yyyy-mm-ddThh:mm:ss.sssZ.
                               The full sampling rate for the
                               instrument is .06 +/- .006 sec.
 
        m65536,    (counts)    s/c clock mod 65536, mod 60 and
        mod60 and              fds line
        fds_line
 
        mag_id     n/a         magnetometer ID
 
        magnetic   (nT)        measured parameter equaling the
        field                  magnetic field strength (e.g. in
        components             nanoTeslas) along a particular axis
        (Br, Btheta,           direction. Usually the three
        Bphi)                  orthogonal axis components are
                               measured by three different sensors.
 
        magnetic   (nT)        derived parameter which combines the 3
        field vector           orthogonal magnetic field component
        (Bmag, avg_Bmag)       measurements.
 
        delta      n/a         delta = arcsin(Btheta/Bmag)
 
        lambda     n/a         lambda = 180. - atan(Bphi/-Br)
 
        rms_Br,                Pythagorean root mean square deviation
        rms_Bt, and            of the component averages
        rms_Bp
 
        npts       (counts)    the number of data points in the
                               current average
 
 
      Source Instrument Parameters
      ============================
      Instrument Host ID              : VG2
      Data Set Parameter Name         : MAGNETIC FIELD VECTOR
      Instrument Parameter Name       : MAGNETIC FIELD COMPONENT
      Important Instrument Parameters : 1
 
      Instrument Host ID              : VG2
      Data Set Parameter Name         : MAGNETIC FIELD VECTOR
      Instrument Parameter Name       : WAVE MAGNETIC FIELD INTENSITY
      Important Instrument Parameters : 1
 
      Processing
      ==========
 
      Processing History
      ------------------
      Source Data Set ID          : N/A
      Software                    : UNK
      Product Data Set ID         : VG2-S-MAG-4-9.60SEC
 
      Ancillary Data
      ==============
      An ancillary data file containing the derived spacecraft
      magnetic field is provided with this data at a 48 second sample
      rate. These data provide zero level offsets used in the data
      processing. S/C field data is provided in spacecraft
      coordinates as follows:
 
      PARAMETER  RESOLUTION  DESCRIPTION
      NAME       (UNITS)
 
      time       48 sec      time in format yyyy-mm-ddThh:mm:ss.sssZ
      m65536     n/a         s/c clock mod 65536
      mod60      n/a         s/c clock mod60
      mag_id     n/a         magnetometer ID
      Bx         (nT)        spacecraft coords. X component
      By         (nT)        spacecraft coords. Y component
      Bz         (nT)        spacecraft coords. Z component
      Bmag       (nT)        total magnetic field strength
      rms_Bx     (nT)        rms mag component
      rms_By     (nT)        rms mag component
      rms_Bz     (nT)        rms mag component
      npts       (counts)    number of points in average