This is compared to {HEAD ~ the time step} that is inherent in {TAIL ~ a user} desired frequency schedule 
is inherent in
This is compared to { HEAD ~ the time step } that is inherent in { TAIL ~ a user } desired frequency schedule
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH