ion</h3>

<p>Daudin et al.(1988) give 8 readings on the composition of 86
containers of milk.  They speak about 85 observations, but this
can be explained with the fact that observations 63 and 64 are
identical (as noted by Rocke (1996)).
</p>
<p>The data set was used for analysing the stability of principal
component analysis by the bootstrap method.  In the same context, but
using high breakdown point robust PCA, these data were analysed by
Todorov et al. (1994).  Atkinson (1994) used these data for ilust