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

Mauna Loa GPS Network - KHKU-Kahuku P.S.
Start: 23-Mar-2005
End: 14-Nov-2022
Brooks, Benjamin, Foster, James, 2005, Mauna Loa GPS Network - KHKU-Kahuku P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/8DY7-NZ35