This directory includes Yearly files of IMP 8 Cosmic Ray Nuclear Composition (CRNC) High Mass Data from The University of Chicago. Averaging Period = 1 hour Fill Data = 9.999E+05 Count Rate data are contained in columnar form with each column as: Column 01: YEAR Column 02: DAY OF YEAR Column 03: HOUR OF DAY Column 04: COVERAGE Column 05: RCK RATE (PENETRATING PART.; INCL. PROTONS E>106 MEV) Column 06: HZLE RATE (Z>8 LOW ENERGY) Column 07: HZHE RATE (Z>8 HIGH ENERGY) Column 08: ID4 CNO (E< 80 MEV/NUC) Column 09: ID4 CNO (E> 80 MEV/NUC) -----------------------------------------------------------