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

Caribbean Hurricane Prediction GPS Network - GRE1-GRE1cGPS_GRN2017 P.S.
Start: 22-Feb-2017
End: 04-Jan-2021
Braun, John, 2017, Caribbean Hurricane Prediction GPS Network - GRE1-GRE1cGPS_GRN2017 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5BC3WZ5