The following information obtained from UNAVCO's online DOI system:
(https://www.unavco.org/data/doi/search/search.html)

Southern Basin and Range GPS Network - CRAM-Ancram P.S.
Start: 14-Sep-2005
End: 14-Sep-2022
Kreemer, Corne, Wernicke, Brian P., 2006, Southern Basin and Range GPS Network - CRAM-Ancram P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5KS6PZ4