When using delivered data please acknowledge the data provider and PDS in accordance with the PDS citation policy. Full details can be found at: http://pds-ppi.igpp.ucla.edu/citations_policy.jsp Author : Mitchell, David Publication Year: 2024 Description : This collection contains time ordered 3-D spectrum data from the Lunar Prospector Electron Reflectometer (3D files) in units of particles/cm**2/sec/steradian/eV, for dates 1998-01-16 to 1999-07-29. doi : https://doi.org/10.17189/ze5j-k897 Thank you.