F8. F7 F6 F5 F4 F3 F2 F1 Run
Level Level Level Level Level Level Level Level
1 1 1 1 1 1 1 1 1
2 2 2 2 2 2 1 1 2
3 3 3 3 3 3 1 1 3
2 2 1 3 3 1 2 1 4
3 3 2 1 1 2 2 1 5
1 1 3 2 2 3 2 1 6
3 1 2 3 2 1 3 1 7
1 2 3 1 3 2 3 1 8
2 3 1 2 1 3 3 1 9
2 3 3 1 2 1 1 2 10
3 1 1 2 3 2 1 2 11
1 2 2 3 1 3 1 2 12
1 3 2 2 3 1 2 2 13
2 1 3 3 1 2 2 2 14
3 2 1 1 2 3 2 2 15
3 2 3 2 1 1 3 2 16
1 3 1 3 2 2 3 2 17
2 1 2 1 3 3 3 2 18
Table 4: L-18 Design of experimental according to Taguchi method for both sets of experiments.