Data values are acquired for a set of {HEAD ~ metrics} for the target and {TAIL ~ each field web site} 
Data values are acquired for a set of { HEAD ~ metrics } for the target and { TAIL ~ each field web site }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL