SSSAJ -- Lin et al. 67 (2): 487 Figure IG3

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Fig. 3. Observation-based seasonal changes of measured relative infiltration rate (ORIR) and calculated viscosity-based relative infiltration rate (VRIR) in the Shafdan wastewater treatment plant. RIR = ORIR + VRIR; F = fall; Sm = summer; Sp = spring; W = winter.