Table 8.

Grey relational grade of the alternatives

Alternative	Grey relational grade	Actual grey grade
A1	[0.51, 0.02,0.50]	1.03
A2	[0.50, 0.02, 0.76]	1.28
A3	[0.59, 0.02, 0.78]	1.39
A4	[1.0, 0.02, 1.0]	2.02
A5	[0.56, 0. 02, 0.82]	1.41