5
1 6 7 8 16
.112 .5734 .011 .303 .0006
.89
C
Data taken from Johns and Cunningham, 1974
who cites NBS handbook 85, 1964.
Wt. fraction for Oxygen increased by .0004 for sum = 1.0.
Density of .89 used based on the observed fat histogram in
  QCT data analyzed with the rBMD protocal as a part of the Biomarkers
  research project.
