A data set from Oehlert (2000) \emph{A First Course in Design and
Analysis of Experiments}, New York: W. H. Freeman.

Data originally from Pignatiello, J.~J. and J.~S. Ramberg (1985).
Comments on ``{O}ff-line quality control, parameter design, and the
Taguchi method,'' by R. N. Kackar. {\em Journal of Quality Technology\/}
{\em 17}, 198--206.

Columns are levels of B, C, D, E, and the height of leaf springs (inches).
First three in every set of six are with O low, second three have O high.