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Table 5 Membership calculation (condition 1)

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)
Chloride857.5 mg/L00001
Sulfate43.00 mg/L0.64000.3600000
DOC9.40 mg/L00.15000.850000
pH6.0600001