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

Alaska Earthquake Center GPS Network - KNKG-Knik Glacier P.S.
Start: 19-Sep-2021
End: 14-Nov-2022
Grapenthin, Ronni, West, Michael, 2022, Alaska Earthquake Center GPS Network - KNKG-Knik Glacier P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/Y7XD-KP50