These electronic data are described in the supporting information.

David T. Allen, Dave Sullivan, Daniel Zavala-Araiza, Adam Pacsi, Jarett Spinhirne
Center for Energy and Environmental Resources, The University of Texas at Austin

Matthew Harrison, Kindal Keen, Gene Youngerman, Bryan Benaway, Dave Maxwell, Jesse Rocha
URS Corporation

Below is the data summary from the measurements for pneumatic controllers.  Download all the data sets on this page in one Zip file.

For the measurements completed on pneumatic controllers, three types of files are available:

1. Sites Dataset: Contains the summary information of the 377 total pneumatic controllers where measurements took place. The file contains fours tabs. The notes tab describes the type of information in the file. The PC data tab contains information the device service, the well type associated with the device, and the operation parameters for the controller, which were provided by the operator. The PC data tab also summarizes the emission measurements that were made by the field team for this study. The site data tab provides an inventory of the observed equipment and number of wells on each site where measurements occurred. The equipment count comparison tab compares the count of equipment per site visited in this study to values in the EPA Inventory of US Greenhouse Gas Emissions and Sinks (2012 data, released in 2014).

2. Time Series Data: Contains a jpeg graphic of the whole gas emissions rate during the field measurements reported in the study. Measurements are categorized based on the type of measurement: supply gas meter (the primary measurement type) or HiFlow^® (the secondary measurement type).
   

3. Measured Data: Contains a csv file for the measurements made during the study for each of the 377 pneumatic controllers. Measurements are categorized based on the type of measurement: supply gas meter (the primary measurement type) or HiFlow^® (the secondary measurement type).