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

Costa Rica GPS Network - GRZA-Garza P.S.
Start: 02-May-2006
End: 13-Nov-2022
Dixon, Timothy H., Protti, Marino, 2006, Costa Rica GPS Network - GRZA-Garza P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5HX19V3