#Data set from Box, Hunter & Hunter,
#corrosiion resistance of four coatings
#for three different temperatures, 
#2 relplications
Resistance temp coat
67    1  1
33    1  1
65    2  1
140   2  1
155   3  1
108   3  1
73    1  2 
8     1  2
91    2  2
142   2  2
127   3  2  
100   3  2
83    1  3
46    1  3 
87    2  3    
121   2  3
147   3  3 
90    3  3
89    1  4
54    1  4
86    2  4
150   2  4
212   3  4
153   3  4