Environmental Risk Assessment System for Phosphogypsum Tailing Dams

Table 6

Scale of relative importance used in the pairwise comparison of AHP for 2 level factors.

		A1		A2		A3		A4		A5
		Score	Converted STFN	Score	Converted STFN	Score	Converted STFN	Score	Converted STFN	Score	Converted STFN
A1	E1	1	(1,1,1,1)	1	(1,1,1,1)	1/3	(1/4,2/7,2/5,1/2)	(1,2)	(1,1,2,2)	1/5	(1/6,2/11,2/9,1/4)
	E2	1	(1,1,1,1)	(1,2)	(1,1,2,2)	1	(1,1,1,1)	(1/2,1)	(1/2,1/2,1,1)	1/3	(1/4,2/7,2/5,1/2)
	E3	1	(1,1,1,1)	1/2	(1/3,2/5,2/3,1)	1/4	(1/5,2/9,2/7,1/3)	1/5	(1/6,2/11,2/9,1/4)	1/7	(1/8,2/15,2/13,1/6)
	E4	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)
	E5	1	(1,1,1,1)	2	(1,3/2,5/2,3)	1	(1,1,1,1)	1/3	(1/4,2/7,2/5,1/2)	1/4	(1/5,2/9,2/7,1/3)
Aggregated STFN			(1,1,1,1)		(0.867,0.960,; 1.403,1.550)		(0.668,0.680,; 0.719,0.752)		(0.598,0.607,; 0.978,1.000)		(0.333,0.350,; 0.400,0.439)
A2	E1	1	(1,1,1,1)	1	(1,1,1,1)	1/2	(1/3,2/5,2/3,1)	(1, 2)	(1,1,2,2)	1/4	(1/5,2/9,2/7,1/3)
	E2	(1/2, 1)	(1/2,1/2,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1/3	(1/4,2/7,2/5,1/2)	1/5	(1/6,2/11,; 2/9,1/4)
	E3	2	(1,3/2,5/2,3)	1	(1,1,1,1)	1/2	(1/3,2/5,2/3,1)	1/3	(1/4,2/7,2/5,1/2)	1/5	(1/6,2/11,; 2/9,1/4)
	E4	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)
	E5	1/2	(1/3,2/5,2/3,1)	1	(1,1,1,1)	1/2	(1/3,2/5,2/3,1)	1/6	(1/7,2/13,2/11,1/5)	1/7	(1/8,2/15,; 2/13,1/6)
Aggregated STFN			(0.778,0.889,; 1.247,1.400)		(1,1,1,1)		(0.607,0.646,; 0.803,1.000)		(0.540,0.557,; 0.841,0.887)		(0.318,0.331,; 0.366,0.391)
A3	E1	3	(2,5/2,7/2,4)	2	(1,3/2,5/2,3)	1	(1,1,1,1)	4	(3,7/2,9/2,5)	1/3	(1/4,2/7,2/5,1/2)
	E2	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1/3	(1/4,2/7,2/5,1/2)	1/3	(1/4,2/7,; 2/5,1/2)
	E3	4	(3,7/2,9/2,5)	2	(1,3/2,5/2,3)	1	(1,1,1,1)	1	(1,1,1,1)	1/2	(1/3,2/5,2/3,1)
	E4	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)
	E5	1	(1,1,1,1)	2	(1,3/2,5/2,3)	1	(1,1,1,1)	1/3	(1/4,2/7,2/5,1/2)	1/5	(1/6,2/11,2/9,1/4)
Aggregated STFN			(1.630,1.845,; 2.275,2.490)		(1.000,1.295,; 1.885,2.180)		(1,1,1,1)		(1.168,1.296,; 1.571,1.725)		(0.388,0.421,0.533,; 0.650)
A4	E1	(1/2,1)	(1/2,1/2,1,1)	(1/2,1)	(1/2,1/2,1,1)	1/4	(1/5,2/9,2/7,1/3)	1	(1,1,1,1)	1/6	(1/7,2/13,; 2/11,1/5)
	E2	(1,2)	(1,1,2,2)	3	(2,5/2,7/2,4)	3	(2,5/2,7/2,4)	1	(1,1,1,1)	1/2	(1/3,2/5,2/3,1)
	E3	5	(4,9/2,11/2,6)	3	(2,5/2,7/2,4)	1	(1,1,1,1)	1	(1,1,1,1)	1/2	(1/3,2/5,2/3,1)
	E4	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)
	E5	3	(2,5/2,7/2,4)	6	(5,11/2,13/2,7)	3	(2,5/2,7/2,4)	1	(1,1,1,1)	(1/2,1)	(1/2,1/2,1,1)
Aggregated STFN			(1.645,1.825,; 2.530,2.710)		(1.955,2.250,; 2.955,3.250)		(1.206,1.406,; 1.811,2.017)		(1,1,1,1)		(0.436,0.467,; 0.668,0.816)
A5	E1	5	(4,9/2,11/2,6)	4	(3,7/2,9/2,5)	3	(2,5/2,7/2,4)	6	(5,11/2,13/2,7)	1	(1,1,1,1)
	E2	3	(2,5/2,7/2,4)	5	(4,9/2,11/2,6)	3	(2,5/2,7/2,4)	2	(1,3/2,5/2,3)	1	(1,1,1,1)
	E3	7	(6,13/2,15/2,8)	5	(4,9/2,11/2,6)	2	(1,3/2,5/2,3)	2	(1,3/2,5/2,3)	1	(1,1,1,1)
	E4	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)	1	(1,1,1,1)
	E5	4	(3,7/2,9/2,5)	7	(6,13/2,15/2,8)	5	(4,9/2,11/2,6)	(1, 2)	(1,1,2,2)	1	(1,1,1,1)
Aggregated STFN			(3.240,3.650,; 4.470,4.880)		(3.550,3.960,; 4.780,5.190)		(1.940,2.350,; 3.170,3.580)		(1.920,2.250,; 3.070,3.400)		(1,1,1,1)