Design and results of Box–Behnken.

Run	A	B	C	Conversion/%	Selectivity/%	BHET yield/%		Residual (%)
						Actual	Predicted
1	0	0	0	100	85.60	85.60	85.20	0.40
2	0	0	0	100	85.60	85.60	85.20	0.40
3	0	0	0	100	85.60	85.60	85.20	0.40
4	−1	−1	0	100	73.00	73.00	75.45	−2.45
5	−1	0	1	100	89.40	89.40	87.05	2.35
6	1	1	0	100	85.40	85.40	82.95	2.45
7	0	0	0	100	85.60	85.60	85.20	0.40
8	−1	0	−1	100	75.40	75.40	72.95	2.45
9	−1	1	0	100	86.00	86.00	88.35	−2.35
10	0	−1	−1	100	69.40	69.40	69.40	0.00
11	0	−1	1	100	79.10	79.10	79.00	0.10
12	1	0	−1	100	77.20	77.20	79.55	−2.35
13	0	0	0	100	83.60	83.60	85.20	−1.60
14	1	−1	0	100	74.60	74.60	72.25	2.35
15	0	1	1	100	84.40	84.40	84.40	0.00
16	0	1	−1	100	87.50	87.50	87.60	−0.10
17	1	0	1	100	69.40	69.40	71.85	−2.45