Seasonal patterns of predicted daily intakes of phthalates in individual climate zones. Panels from the top to bottom show daily intake of DEHP, DnBP, and DiBP, respectively. Panels from left to right show results in SC, C, HSCW, and HSWW zones, respectively. The shaded regions represent the interquartile ranges. The dust-phase concentrations of individual compounds are treated as constants across seasons and regions, and thus the variations in exposure doses are caused by the variations in concentrations in the indoor air.