Mars Science Laboratory APXS Calibrated Data Bundle

This bundle contains MSL APXS data migrated from the PDS3 volume. It
contains calibrated data including spectra and compositions.

The bundle contains the following collections:

- Science data located in the data and extras directories.
- Two document collections located in the catalog directory, which contains
  the PDS3 catalog files, and SIS and data processing documents located in 
  the document directory.
- Miscellaneous collection for the PDS3 index file located in the index
  directory.
- Calibration data located in the calib directory.

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

Note that the PDS4 labels and other PDS4 products are merged with the PDS3
volume such that all the PDS3 files and directories are preserved. Thus,
users who want access to the PDS3 labels can continue to use them. All data
products have been given PDS4 labels. Some PDS3 files remain but are not
considered part of the PDS4 bundle, e.g. aareadme.txt, errata.txt,
and voldesc.cat files in the root directory of this bundle. The aareadme.txt
file describes the structure of the original PDS3 dataset. The errata.txt
lists any comments or errors relative to the PDS3 standards. The voldesc.cat
is a PDS3 catalog file for the volume.

This bundle was created and archived by the Geosciences Node of the Planetary
Data System. Questions about this bundle may be directed to
geosci@wunder.wustl.edu.