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

COCONet GPS Network - CN44-MargIslndVEN2016 P.S.
Start: 14-Jun-2016
End: 17-Sep-2020
UNAVCO Community, 2016, COCONet GPS Network - CN44-MargIslndVEN2016 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5PV6HR0