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Figure 1 Percentage of homes (living rooms) with air nicotine levels above the limit of detection (LOD = 0.08 μg/m3, plain bars) and above the limit of quantification (LOQ = 0.24 μg/m3, diagonally striped bars) and distribution of air nicotine levels in Germany, the Netherlands, and Sweden related to questionnaire reported smoking in the living room during the measurement period.
