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

Colorado Plateau/MAGNET - JEAN-JEAN P.S.
Start: 10-May-2007
End: 16-Dec-2019
Kreemer, Corne, Bennett, Rick, 2009, Colorado Plateau/MAGNET - JEAN-JEAN P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5DN4370