The following information obtained from UNAVCO's online DOI system: (https://www.unavco.org/data/doi/search/search.html) MAGNET - HUAL-HUAL P.S. Start: 21-Mar-2007 End: 20-Mar-2018 Blewitt, Geoff, Hammond, William C., Kreemer, Corne, 2009, MAGNET - HUAL-HUAL P.S., UNAVCO, GPS/GNSS Observations Dataset, https://doi.org/10.7283/T5M906TR