X1

X2

X3

Oil weight in g.

Yield  in ‰

Test no1

-1

-1

-1

0.43

2.38

Test no2

+1

-1

-1

0.82

1.95

Test no 3

-1

+1

-1

0.44

2.43

Test no 4

+1

+1

-1

0.84

1.99

Test no 5

-1

-1

+1

0.39

2.14

Test no6

+1

-1

+1

0.79

1.89

Test no7

-1

+1

+1

0.43

2.38

Test no 8

+1

+1

+1

0.85

2.04

Test no 9

0

0

0

0.66

2.20

Table 3: Experimental results on centered reduced coordinates.