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