## description

This collection includes (1) user-facing documentation for the bundle's
primary science data and (2) documents that provide useful context for the
AHFE and the bundle's source data.

## files

- bundle_documentation.md
High-level documentation for this bundle.

- bitflip_illustration.png
Figure referenced in this document illustrating bitflip corrections.

/hfe
----
Contains documents that provide scientific and technical context for the AHFE
as a whole.

- a15a_alsep.txt
David R. Williams' overview of the Apollo 15 ALSEP package.

- a15a_hfe.txt
Williams' overview of the Apollo 15 HFE.

- a17a_alsep.txt
Williams' overview of the Apollo 17 ALSEP package.

- a17a_hfe.txt
Williams' overview of the Apollo 17 HFE.

- a15_psr_ch11_hfe.pdf
Chapter 11 of the Apollo 15 Preliminary Science Report, containing instrument
PI Marcus Langseth's technical and scientific summary of the Apollo 15 HFE.

- a17_psr_ch9_hfe.pdf
Chapter 9 of the Apollo 17 Preliminary Science Report, containing Langseth's
technical and scientific summary of the Apollo 17 HFE.

- ase_data_handbook_10.pdf
Chapter 10 of the Apollo Surface Experiments Data Handbook, providing
description and operational history of the AHFE.

- final_technical_report.pdf
The Lunar Heat Flow Experiment Final Technical Report, Langseth's
monograph-length discussion of instrument architecture, engineering
challenges, and collected data up through the end of 1974.

- hfe_photo_in_situ.jpg
Photograph of the Apollo 17 HFE in situ on the Moon.

- probe_geometry.jpg
Abstract schematic showing relative probe sensor positions and logical file
membership.

/lamont-nssdc
----
Contains documents that provide context for the portions of this bundle's
source data that were processed by the original investigators at
Lamont-Doherty Observatory of Columbia University, sent to the NSSDC,
converted to ASCII tables by Kent Hills and David R. Williams in 2005, and
archived as PDS3 bundles A15A-L-HFE-3-THERMAL-CONDUCTIVITY-V1.0 and
A17A-L-HFE-3-THERMAL-CONDUCTIVITY-V1.0.

- a15_dataset.cat
Dataset description from A15A-L-HFE-3-THERMAL-CONDUCTIVITY-V1.0.

- a17_dataset.cat
Dataset description from A17A-L-HFE-3-THERMAL-CONDUCTIVITY-V1.0

- lamont_data_tapes.pdf
Lamont's description of the format and filesystem of the original magnetic
data tapes provided by Lamont to the NSSDC for archival.

/nagihara
----
Contains documents that provide context for the portions of this bundle's
source data that were recovered from ARCSAV tapes by Seiichi Nagihara et al.
and published in 2018 and 2019. Detailed documentation on the raw ARCSAV data
format is not included in this bundle; see documents in
urn:nasa:pds:a15hfe_raw_arcsav and urn:nasa:pds:a17hfe_raw_arcsav.

- a15_hfe_calibrated_arcsav_descr.pdf
Bundle overview from urn:nasa:pds:a15hfe_calibrated_arcsav.

- a17_hfe_calibrated_arcsav_descr.pdf
Bundle overview from urn:nasa:pds:a17hfe_calibrated_arcsav.