The supplemental materials reported here provide standard high-definition (HD), high-speed, and infrared videos of the 13 full-scale hydrogen dispersion and burning experiments. The videos show different burning dynamics of various hydrogen/air mixtures in the presence and absence of vehicles parked inside the garage.

This source code is available in zipped file which includes two source files, two author's output files, a Makefile and a README.txt file. An article with further documentation titled "The Walker Alias Method for Sampling in Modern Fortran" has been submitted for publication in the Journal of Research of the National Institute of Standards and Technology. Before publication, it is available to NIST personnel through the internal manuscript system.

This software was developed per the ASTM E3125-17 documentary standard for 3D imaging systems. The software was written in MATLAB and Python and sample sphere data sets are provided.

Hourly methane mole fraction data collected from four tower sites in the Washington DC and Baltimore MD region as part of NIST's Northeast Corridor project. Dataset accompanying publication "Seasonally resolved excess urban methane emissions from the Baltimore/Washington, DC metropolitan region" by Huang, Y., Kort, E. A., Gourdji, S., Karion, A., Mueller, K., and Ware, J.: Seasonally Resolved Excess Urban Methane Emissions from the Baltimore/Washington, DC Metropolitan Region, Environ. Sci. Technol., 10.1021/acs.est.9b02782, 2019.

Six 2.7 m by 3.7 m shear wall specimens were fabricated consisting of 150 mm wide CFS framing sheathed on one side with sheet steel adhered to Type X gypsum board and on the opposite side with Type X gypsum board. The specimens were subjected sequentially to varied combinations of mechanical (shear) deformation and thermal (fire) loading. Specimen 1 (CFS01) was used to establish the monotonic 'pushover' load-displacement capacity of the wall system and subsequently to shake down the fire test setup.

Python and Javascript source files for the reductus program, used for data reduction for all the neutron reflectometers at the NIST Center for Neutron Research (includes the PBR, MAGIK and NG7 Refl instruments)

This software package performs joint quantum state and measurement tomography. The software is provided as Python source code. A description of the algorithms used is in "Joint Quantum State and Measurement Tomography with Incomplete Measurements" https://arxiv.org/abs/1803.08245

Evaluation of Lateral and Depth Resolutions of Light Field Cameras: Light field cameras have the potential of becoming inexpensive and portable 3D imaging instruments. However, the suitability of this camera to a specific application depends on resolution requirements. This data set was collected to assess the image resolution of light field cameras during acquisition configurations similar to the ones encountered by forensic photographers at crime scenes. Examples of 3D crime scene objects include tire tread and shoe imprints in substances like mud or snow.

This study quantifies the contribution of CLT building elements to compartment fires and characterizes the effect of gypsum board on delaying or preventing involvement of the CLT in the fire under varied ventilation conditions. Six compartments (9.1 m long x 4.6 m wide x 2.7 m high) were assembled out of prefabricated CLT panels. Each panel was factory assembled using five plies of 35 mm thick lumber for a total thickness of 175 mm. A polyurethane adhesive was used to hold the plies together.

This is the taxonomy that is used for classifying information on the NIST website. It comprises a hierarchical set of domain designations that include the research areas within NIST. The taxonomy is also used as a resource for metadata tagging to semantically enrich NIST research publications for discovery and reuse by the broader NIST community.