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

COCONet GPS Network - CN49-CN49_Ave_VEN2015 P.S.
Start: 13-Apr-2016
End: 29-Apr-2019
UNAVCO Community, 2016, COCONet GPS Network - CN49-CN49_Ave_VEN2015 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/PYY1-4C49