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

Turkwel, Kenya - XTBT-Turkwel Turkana P.S.
Start: 22-Feb-2017
End: 25-Jan-2021
Bendick, Rebecca, 2017, Turkwel, Kenya - XTBT-Turkwel Turkana P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5W66J53