The following information obtained from UNAVCO's online DOI system: (https://www.unavco.org/data/doi/search/search.html) Alaska Volcano Observatory GPS Network Spurr - SPBG-Barrier Glacier P.S. Start: 08-Sep-2004 End: 14-Nov-2022 Freymueller, Jeffrey T., Grapenthin, Ronni, 2004, Alaska Volcano Observatory GPS Network Spurr - SPBG-Barrier Glacier P.S., UNAVCO, GPS/GNSS Observations Dataset, https://doi.org/10.7283/T5DR2SVM