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

Telica Volcano GPS Network - QUEN-QuebrachaNIC2010 P.S.
Start: 14-Mar-2010
End: 11-Sep-2018
LaFemina, Peter, 2014, Telica Volcano GPS Network - QUEN-QuebrachaNIC2010 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5TX3CDN