Notice: This data set will be retired on 15 January 2026. We are working to release a new version of this data before that time. For more information, please see the User Notice for more information.
Data Citation and Acknowledgment
As a condition of using these data, you must cite the use of this data set. Such a practice gives credit to data set producers and advances principles of transparency and reproducibility.
Other standard citation formats may be found on the DOI Citation Formatter website (paste 10.7265/rjzb-pf78 into the top form field).
Describing subset: When applicable, include the information a reader would need to extract the same subset at the end of your citation. If multiple or complex steps were incolved, it may be more appropriate to include this information in the paper itself.
See our Citation Policies for more details about how to structure your data citation.
COMPREHENSIVE Level of Service
Data: Data integrity and usability verified; data customization services available for select data
Documentation: Key metadata and comprehensive user guide available
User Support: Assistance with data access and usage; guidance on use of data in tools and data customization services