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

COCONet GPS Network - ISCO-CocosIslndCR2011 P.S.
Start: 19-May-2011
End: 05-Feb-2020
Protti, Marino, UNAVCO Community, 2011, COCONet GPS Network - ISCO-CocosIslndCR2011 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5R20ZM0