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

Hawaii GPS Network - YEEP-Yee Hop P.S.
Start: 19-Aug-2004
End: 14-Nov-2022
Miklius, Asta, 2004, Hawaii GPS Network - YEEP-Yee Hop P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5XG9PD3