{TAIL ~ Data} is collected using {HEAD ~ both the SATPS and non SATPS methods} to obtain a master data set 
{ TAIL ~ Data } is collected using { HEAD ~ both the SATPS and non SATPS methods } to obtain a master data set
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH