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

Central Andean Tectonic Observatory Geodetic Array - CTLR-Cerro Tolar P.S.
Start: 13-Jul-2007
End: 13-Oct-2014
Simons, Mark, Galetzka, John E., Genrich, Jeff F., Ortega, Francisco, Comte, Diana, Glass, Bianca, Gonzalez, Gabriel, 2010, Central Andean Tectonic Observatory Geodetic Array - CTLR-Cerro Tolar P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5T43R4P