Risk Assessment of Groundwater Contamination: A Multilevel Fuzzy Comprehensive Evaluation Approach Based on DRASTIC Model

Table 6

Pairwise comparison matrix of 𝑈₁ based on 0.1–0.9 scale.

Factor	A	S	I	Order index
A	0.5000	0.6100	0.4798	1.5898
S	0.4482	0.5000	0.3593	1.3075
I	0.6719	0.5750	0.5000	1.7469