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

PBO GPS Network - PHJX-HJ_CucapahMX2011 P.S.
Start: 28-Oct-2011
End: 24-Jun-2020
UNAVCO Community, 2011, PBO GPS Network - PHJX-HJ_CucapahMX2011 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5XG9P6D