Data from the Voyager 2 magnetometer has been archived in two different
coordinate systems for the Neptune encounter - Neptune Longitude System (NLS)
coordinates and Heliographic (HG) coordinates. The data taken in the solar wind
and sheath is archived in HG coordinates and the magnetospheric data is given 
in NLS coordinates. Data in each of these regions is archived in sub-directories
which bear the name of coordinate system abbreviation.

In addition to the magnetic field dataset, the magnetometer team has provided
a dataset that is constructed for use in magnetic modeling programs. The data 
are stored in INTERNAL.TAB, an ascii table.  The data file has a PDS label file
(.LBL) which describes some of the physical properties of the data 
(spacecraft position and magnetic 
 field components). There is a format file 
(.FMT) which describes the columns 
 of the dataset. 

 
Internal Field Model Data Table
===============================================================================
name          rows    columns     row_length   row_type
-------------------------------------------------------------------------------
INTERNAL.TAB  2194       6         24           fixed_length
 
 
Columns
===============================================================
name    type      format      description
--------------------------------------------------------------
r       float_4    1x,f12.3  Spacecraft radial distance from Neptune in Rn.
theta   float_4    f12.3     Spacecraft theta angle (latitude) in radians.
phi     float_4    f12.3     Spacecraft phi angle (longitude) in radians.
b_comp  float_4    f12.3     Magnetic field strength for given component.
sigma   float_4    f12.3     Estimated standard deviation of field in nT.
type    integer_4  i6        Field component: 1 = r, 2 = theta, 3 = phi, 4 = |B|