.BG D
.FN stack
.TL
Stack-loss Data
.PP
.AG loss
percent of ammonia lost (times 10).
.AG x
matrix with 21 rows and 3 columns representing
air flow to the plant,
cooling water inlet temperature,
and acid concentration as a percentage (coded by
subtracting 50 and then multiplying by 10).
.PP
The data is from operation of a plant for the oxidation of ammonia to nitric
acid, measured on 21 consecutive days.
.SH SOURCE
K. A. Brownlee, 
.ul
Statistical Theory and Methodology in Science and Engineering,
Wiley, 1965, p. 454.
Copyright 1965 by John Wiley & Sons, Inc., New York.
Also in Draper and Smith, 
.ul
Applied Regression Analysis,
Wiley, 1966, Ch. 6,
and Daniel and Wood, 
.ul
Fitting Equations to Data,
Wiley, 1971, p. 61.
.KW dataset
.WR
