fig1

Figure 1. Variation of the concentration οf the PAHs found in the air samples collected from (a) the bedroom and (b) the living room of the assessed houses [data are shown as average concentration of PAHs detected in the dwellings monthly; *denote significant differences between the average PAHs in the two rooms based on paired t-test analysis of means (95% confidence level)]. PAHs: Polycyclic aromatic hydrocarbons.