The tlc data frame has 32 rows and 4 columns. It contains data on pretransplant total lung capacity (TLC) for recipients of heart-lung transplants by whole-body plethysmography.
tlc
Format
This data frame contains the following columns:
age: a numeric vector, age of recipient (years).
sex: a numeric vector code, female: 1, male: 2.
height: a numeric vector, height of recipient (cm).
tlc: a numeric vector, total lung capacity (l).
Source
D.G. Altman (1991), Practical Statistics for Medical Research, Exercise 12.5, 10.1, Chapman & Hall.