The bounding data values for {TAIL ~ the set} of {HEAD ~ metrics} characterize the bounding web site 
The bounding data values for { TAIL ~ the set } of { HEAD ~ metrics } characterize the bounding web site
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH