The CPI975 data frame has 60 rows and 4 columns.
This data frame contains the following columns:
a numeric vector giving the measured plasma level (microgram/mL).
a numeric vector giving the time since administration (hours).
a factor indicating the gender of the rat.
a numeric vector indicating the dose administred (mg/kg).
Nedelman et al. (1995), Table 2 describes serial sampling design were the plasma levels are measured at 5 time points over 24 hours for 10 rats. The same experiment was repeated with different oral dosages and gender.