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Table 1 Conditions with different combinations of independent variable used in central composite rotatable second order design for response surface methodology

From: Monitoring the formation of cholesterol oxidation products in model systems using response surface methodology

Treatment No. X1 X2 Heating Temperature (t) Heating Time (T)
1 −1 −1 100 1
2 −1 −0.5 100 3
3 −1 −0.1 100 5
4 −1 1 100 10
5 0 −1 150 1
6 0 −0.5 150 3
7 0 −0.1 150 5
8 0 1 150 10
9 1 −1 200 1
10 1 −0.5 200 3
11 1 −0.1 200 5
12 1 1 200 10