Bundle Overview
===============

This bundle consists of two collections for the Apollo 17 Surface
Electrical Properties (SEP) Experiment . The collections are:

- Apollo 17 Surface Electrical Properties Experiment Calibrated ASCII
  Data Collection:  Contains two comma-delimited ASCII files of
  calibrated lunar surface electromagnetic field data at six measured
  frequencies from 1.0 to 32.1 MHz and navigation (range) data from the
  SEP Experiment at the Apollo 17 landing site for the time span of
  11-13 December 1972. One file contains straightened science and
  navigation (range) data; the other file contains only unstraightened
  science data. The /data/ directory in this bundle contains this
  collection. The bundle description in the document collection
  describes the format of these ASCII data products.

- Apollo 17 Surface Electrical Properties Experiment Calibrated ASCII 
  Data - Document Collection:  Contains supporting documentation,
  including the bundle description document and a copy of the SEP
  chapter of the Apollo 17 Preliminary Science Report. This collection
  also contains high- and low-resolution digital reproductions of the
  three-part SEP final technical report that includes plots of the
  complete set of processed lunar field data, as dB values versus range,
  at six measured frequencies from 1.0 to 32.1 MHz for the time span of
  11-13 December 1972. The /document/ directory in this bundle contains
  this collection.

Each data and document product in this bundle is described by a PDS4 label
in a separate file with the same name but with the extension "xml". PDS4
labels are XML (eXtended Markup Language) files that conform to the PDS4
Information Model at https://pds.nasa.gov/pds4/schema/released/. The labels
are best viewed in an XML-aware text editor, and may be used by software
that can manipulate XML documents.

See these sources for more information:

- For information about Apollo 17 SEP data products in this bundle, 
  see the document collection in this bundle. A good place to start is
  the bundle description document, bundle_description.pdf.

- For information about Apollo 17 SEP, see the SEP chapter of the 
  Apollo 17 Preliminary Science Report, NASA SP-330, 1973, which is
  provided in the document collection as a17_psr_ch15_sep.pdf. 

  The user should read Grimm (2018), New analysis of the Apollo 17
  surface electrical properties experiment, Icarus, 134, pp. 389-399,
  doi:10.1016/j.icarus.2018.06.007. This paper reviews the SEP
  experiment and methodology, presents a new analysis of the Apollo 17
  SEP data contained in this archive, and discusses Apollo-era and new
  lunar results.

- For information about PDS4, see https://pds.nasa.gov/pds4/about/. 

This bundle was created by the NASA Space Science Data Coordinated Archive
(NSSDCA) for an Apollo data restoration effort and archived at the
Geosciences Node of the NASA Planetary Data System. Questions about this
bundle may be directed to geosci@wunder.wustl.edu.