These data are a subsample from a study of the effect of air
pollution on lung function. The variables measured were age,
gender, height, weight, forced vital capacity (FVC), and 
forced expiratory volume in 1 second (FEV1). FVC is the total
volume of air in liters which an individual can expel 
regardless of how long it takes. FEV1 is the volume of air
expelled during the first second when an individual has been
told to breathe in deeply and then expel as much air as 
possible.

These data appeared in Dunn and Clark (1987), Applied Statistics:
Analysis of Variance and Regression, p. 354.