Data Set Overview
      =================
      Instrument P.I.       : John D. Richardson
      Data Supplier         : John D. Richardson
      Data sampling rate    : 96 seconds
      Data Set Start Time   : 1979-07-23T23:42:34.541Z
      Data Set Stop Time    : 1979-08-10T04:04:57.070Z

      This data set contains plasma parameters from Voyager 2
      outbound from Jupiter from the magnetotail through the solar
      wind. Fit and moment parameters are given; the fit parameters
      assume a single, isotropic convected proton Maxwellian
      distribution. Although magnetotail data is provided, these
      data are unreliable; the density can be used as an upper limit
      to the actual density. Solar wind data are also provided and
      are reliable. These M mode data are the best data to use in
      most regions of the magnetosheath. Magnetotail data in this
      data set are included mainly to put the sheath data in context
      and show magnetopause.

      Parameters
      ==========

      Data Set Parameter 'ION DENSITY'
      --------------------------------
      Data Set Parameter Name        : ION DENSITY
      Data Set Parameter Unit        : CM**-3
      Sampling Parameter Name        : TIME
      Sampling Parameter Unit        : SECOND
      Minimum Sampling Parameter     : UNK
      Maximum Sampling Parameter     : UNK
      Sampling Parameter Interval    : UNK
      Minimum Available Sampling Int : UNK
      Noise Level                    : UNK

      A derived parameter equaling the number of ions per unit
      volume over a specified range of ion energy, energy/charge, or
      energy/nucleon. Discrimination with regard to mass and or
      charge state is necessary to obtain this quantity, however,
      mass and charge state are often assumed due to instrument
      limitations.

      Many different forms of ion density are derived. Some are
      distinguished by their composition (N+, proton, ion, etc.) or
      their method of derivation (Maxwellian fit, method of
      moments). In some cases, more than one type of density will be
      provided in a single data set. In general, if more than one
      ion species is analyzed, either by moment or fit, a total
      density will be provided which is the sum of the ion
      densities. If a plasma component does not have a Maxwellian
      distribution the actual distribution can be represented as the
      sum of several Maxwellians, in which case the density of each
      Maxwellian is given.

      Data Set Parameter 'ION THERMAL SPEED'
      --------------------------------------
      Data Set Parameter Name        : ION THERMAL SPEED
      Data Set Parameter Unit        : KM/S
      Sampling Parameter Name        : TIME
      Sampling Parameter Unit        : SECOND
      Minimum Sampling Parameter     : UNK
      Maximum Sampling Parameter     : UNK
      Sampling Parameter Interval    : UNK
      Minimum Available Sampling Int : UNK
      Noise Level                    : UNK

      A measure of the velocity associated with the temperature of
      the ions. It is formally defined as the Ion Thermal Speed
      squared equals two times K (Boltzmann's constant) times T
      (temperature of ion) divided by M (ion mass). Each component
      of a plasma has a thermal speed associated with it.

      Data Set Parameter 'ION VELOCITY'
      ---------------------------------
      Data Set Parameter Name        : ION VELOCITY
      Data Set Parameter Unit        : KM/S
      Sampling Parameter Name        : TIME
      Sampling Parameter Unit        : SECOND
      Minimum Sampling Parameter     : UNK
      Maximum Sampling Parameter     : UNK
      Sampling Parameter Interval    : UNK
      Minimum Available Sampling Int : UNK
      Noise Level                    : UNK

      A derived parameter giving the average speed and direction of
      motion of a plasma or plasma component. The velocity can be
      obtained by taking the first moment of the distribution
      function or by simulating the observations with some known
      distribution function, usually a Maxwellian, to the
      distribution. Velocities are given in heliographic (RTN)
      coordinates:

        R is radially away from sun,
        T is in plane of sun's equator and positive in the direction
          of solar rotation,
        N completes right-handed system.

      Source Instrument Parameters
      ============================
      Instrument Host ID              : VG2
      Data Set Parameter Name         : ION DENSITY
      Instrument Parameter Name       : ION RATE
      Important Instrument Parameters : 1

      Instrument Host ID              : VG2
      Data Set Parameter Name         : ION DENSITY
      Instrument Parameter Name       : ION CURRENT
      Important Instrument Parameters : 1

      Instrument Host ID              : VG2
      Data Set Parameter Name         : ION VELOCITY
      Instrument Parameter Name       : ION CURRENT
      Important Instrument Parameters : 1

      Instrument Host ID              : VG2
      Data Set Parameter Name         : ION THERMAL SPEED
      Instrument Parameter Name       : ION RATE
      Important Instrument Parameters : 1

      Instrument Host ID              : VG2
      Data Set Parameter Name         : ION THERMAL SPEED
      Instrument Parameter Name       : ION CURRENT
      Important Instrument Parameters : 1

      Instrument Host ID              : VG2
      Data Set Parameter Name         : ION DENSITY
      Instrument Parameter Name       : PARTICLE MULTIPLE PARAMETERS
      Important Instrument Parameters : 1

      Data Coverage
      =============
Filename          Records           Start                  Stop
-------------------------------------------------------------------
SHEATH_M_MODE.TAB 7452 1979-07-23T23:42:34.541Z 1979-08-10T04:04:57.070Z

Confidence Level Overview
      =========================
      The data is not reliable inside the magnetopause. In the
      magnetosheath and solar wind this data is generally reliable.

      Missing Data Flag
      =================
      Any data column whose value is -9.9999 or -9999.9 (depending
      upon column format) is a missing data value.