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Table 8 Membership calculation (condition 4)

From: Risk assessment methodology for iron stability under water quality factors based on fuzzy comprehensive evaluation

Water quality factorValueSlight risk (vslr)Small risk (vsmr)General risk (vger)Greater risk (vgrr)Significant risk (vsir)
Chloride159.2 mg/L000.31600.68400
Sulfate132.69 mg/L000.84620.15380
DOC5.35 mg/L0.16250.8375000
pH6.85000.20000.80000