The method can also determine calibration coefficients for {HEAD ~ unknown calibration standards} by extracting {TAIL ~ the calibration} coefficients from the optimized models 
The method can also determine calibration coefficients for { HEAD ~ unknown calibration standards } by extracting { TAIL ~ the calibration } coefficients from the optimized models
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH