Table 9.

Test of multiple comparisons of metaheuristic means-Tukey HSD, significance = 0.05.

Pair	Meandiff	P-adj	Lower	Upper	Reject
DE-PSO	0.004	0.268	− 0.002	0.011	False
DE-SGA	− 0.001	0.900	− 0.007	0.005	False
PSO-SGA	− 0.005	0.130	− 0.012	0.001	False