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