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Table 1 Face-centered cube design matrix with coded and original units

From: Response surface modeling for hot, humid air decontamination of materials contaminated with Bacillus anthracis ∆Sterne and Bacillus thuringiensis Al Hakam spores

Run X1 X2 X3 Temperature (°C) Rel. humidity (%) Days Block
3 −1 −1 −1 60.0 60 1 0
9 −1 −1 1 60.0 60 7 0
12 −1 1 −1 60.0 90 1 0
6 −1 1 1 60.0 90 7 0
1 0 0 0 68.3 75 4 0
4 0 0 0 68.3 75 4 0
8 0 0 0 68.3 75 4 0
11 0 0 0 68.3 75 4 0
13 0 0 0 68.3 75 4 0
2 1 −1 −1 76.7 60 1 0
10 1 −1 1 76.7 60 7 0
7 1 1 −1 76.7 90 1 0
5 1 1 1 76.7 90 7 0
14 −1 0 0 60.0 75 4 1
16 0 −1 0 68.3 60 4 1
18 0 0 −1 68.3 75 1 1
19 0 0 1 68.3 75 7 1
17 0 1 0 68.3 90 4 1
15 1 0 0 76.7 75 4 1