In France, the median FA concentration was 20 μg/m3(10th and 95th percentile: 9 and 47 μg/m3) in dwellings and 14 μg/m3(min and max: 1.5 and 56 μg/m3) in the day-care centres. The mean concentration was 27 μg/m3(min and max: 4 and 100 μg/m3) in schools and 16 ...