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

Northern Basin and Range GPS Network - SPIC-Scipio P.S.
Start: 07-Feb-2003
End: 14-Nov-2022
UNAVCO Community, Davis, James, 2003, Northern Basin and Range GPS Network - SPIC-Scipio P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5J101H8

Northern Basin and Range GPS Network - SPIC-Scipio P.S.
Start: 07-Feb-2003
End: 16-Jun-2005
Davis, James, 2003, Northern Basin and Range GPS Network - SPIC-Scipio P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5SJ1HZM

Northern Basin and Range GPS Network - SPIC-Scipio P.S.
Start: 16-Jun-2005
End: 14-Nov-2022
UNAVCO Community, 2003, Northern Basin and Range GPS Network - SPIC-Scipio P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5NS0S79