About LEMS120 LEMS120 counts ions at 120 degrees from the space-craft spin axis . P1' 61-77 keV ions P2' 77-127 keV ions P3' 127-207 keV ions P4' 207-336 keV ions P5' 336-601 keV ions P6' 601-1123 keV ions P7' 1.123-1.874 MeV ions P8' 1.874-4.752 MeV ions LEMS120