The following information obtained from UNAVCO's online DOI system: (https://www.unavco.org/data/doi/search/search.html) MAGNET - MILL-MILL P.S. Start: 07-Oct-2004 End: 11-Jul-2018 Blewitt, Geoff, Hammond, William C., Kreemer, Corne, 2009, MAGNET - MILL-MILL P.S., UNAVCO, GPS/GNSS Observations Dataset, https://doi.org/10.7283/T5Z899MG