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

CVO GPS Network - SOLF-SOLF P.S.
Start: 06-Oct-2018
End: 17-Oct-2019
Dzurisin, Daniel, 2020, CVO GPS Network - SOLF-SOLF P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/8WJC-XQ85