The following information obtained from UNAVCO's online DOI system: (https://www.unavco.org/data/doi/search/search.html) PBO GPS Network - P546-FlattopPk_CS2006 P.S. Start: 02-Feb-2006 End: 28-Oct-2020 UNAVCO Community, 2006, PBO GPS Network - P546-FlattopPk_CS2006 P.S., UNAVCO, GPS/GNSS Observations Dataset, https://doi.org/10.7283/T5P26W2N