Table 13.

Results of applying the weighted sum method

Row	Weights			Solution			Computational time (h:m:s)
	First objective (NPV)	Second objective (environmental)	Third objective (quality)	NPV	Environmental	Quality**
1	0.2	0.4	0.4	8.9136E + 11	4657.6	1.1345	00:03:22
2	0.3	0.4	0.3	1.3121E + 12	4495.6	1.1262	00:04:52
3	0.05	0.35	0.6	2.6689E + 11	4426.1	1.1471	00:07:56
4	0.85	0.1	0.05	1.4331E + 12	3991.9	1.0168	00:03:07
5	0.6	0.1	0.3	1.4257E + 12	4245.8	1.0892	00:02:17
6	0.2	0.45	0.35	7.0949E + 11	4687.7	1.1193	00:17:55
7	0.45	0.35	0.2	1.4294E + 12	4474.7	1.0613	00:02:40
8*	0.1	0.4	0.5	2.6689E + 11	4426.1	1.1471	00:02:27
9	0.6	0.3	0.1	1.4329E + 12	4551.1	1.0090	00:02:31
10*	0.15	0.55	0.3	7.0949E + 11	4687.7	1.1193	00:06:28
11*	0.5	0.2	0.3	1.4257E + 12	4245.8	1.0892	00:02:25
12*	0.8	0.1	0.1	1.4331E + 12	3991.9	1.0168	00:02:18
13	0.25	0.45	0.3	9.2858E + 11	4717.1	1.0874	00:02:47
14	0.15	0.45	0.4	6.9613E + 11	4689.0	1.1350	00:02:39
15*	0.4	0.25	0.35	1.3121E + 12	4495.6	1.1262	00:02:23
Total computational time							01:06:07

*Duplicated solution

**To have a measure between 0 and 1 for quality, values can be divided by the ideal point (P = 2)