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

HoustonNet GPS Network - PA00-PAM 00 P.S.
Start: 01-Jan-1996
End: 10-Dec-2018
Wang, Guoquan, 2013, HoustonNet GPS Network - PA00-PAM 00 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5M32SWC