Effect of increasing coagulant concentrations on: A N1 copies/g extracted mass, B N2 copies/g extracted mass, C PMMoV copies/g of extracted mass, D N1 copies/L of total sample volume, E N2 copies/L of total sample volume, F PMMoV copies/L total sample volume, G N1 copies/copies PMMoV, and H N2 copies/copies PMMoV. Note: The concentrations of coagulant, denoted as C1, C2, C3, C4, and C5, corresponding to 0, 5, 15, 30, and 60 mg/L as Fe³⁺, respectively