When the actions are recorded as a function of time, i.e. when they include {HEAD ~ information} relating to the time and {TAIL ~ date} of execution, the recorded information can be used as a valuable source of statistical information 
relating to
When the actions are recorded as a function of time , i.e. when they include { HEAD ~ information } relating to the time and { TAIL ~ date } of execution , the recorded information can be used as a valuable source of statistical information
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH