{HEAD ~ A smoothed histogram} and its histogram integral are constructed representing {TAIL ~ the frequency} of occurrence of the digital values stored in the data bank 
{ HEAD ~ A smoothed histogram } and its histogram integral are constructed representing { TAIL ~ the frequency } of occurrence of the digital values stored in the data bank
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH