based on the measurements obtained in step b, plotting the alcohol concentration levels for an individual versus time and using computerized techniques to obtain value of the Area Under the Curve for the ascending and descending {HEAD ~ parts} of {TAIL ~ the plotted data} 
of
based on the measurements obtained in step b , plotting the alcohol concentration levels for an individual versus time and using computerized techniques to obtain value of the Area Under the Curve for the ascending and descending { HEAD ~ parts } of { TAIL ~ the plotted data }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL