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

HoustonNet GPS Network - UHDT-UHDT P.S.
Start: 23-Jul-2013
End: 10-Nov-2022
Wang, Guoquan, 2013, HoustonNet GPS Network - UHDT-UHDT P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5PV6HGD