The file correspond to measurements of the following variables (from left to right) on 252 men: 

 Density determined from underwater weighing
 Percent body fat from Siri's (1956) equation [Percentage of Body Fat (i.e. 100*B) = 495/D - 450, were 
                                               D = Body Density (gm/cm^3)]
 Age (years)
 Weight (lbs)
 Height (inches)
 Neck circumference (cm)
 Chest circumference (cm)
 Abdomen 2 circumference (cm)
 Hip circumference (cm)
 Thigh circumference (cm)
 Knee circumference (cm)
 Ankle circumference (cm)
 Biceps (extended) circumference (cm)
 Forearm circumference (cm)
 Wrist circumference (cm)

(Measurement standards are apparently those listed in Benhke and Wilmore
(1974), pp. 45-48 where, for instance, the abdomen 2 circumference is 
measured "laterally, at the level of the iliac crests, and anteriorly, at
the umbilicus".)

Roger W. Johnson
Department of Mathematics & Computer Science
South Dakota School of Mines & Technology
501 East St. Joseph Street
Rapid City. SD  57701

email address: rwjohnso@silver.sdsmt.edu
web address: http://silver.sdsmt.edu/~rwjohnso