Figures & data
Figure 1. The calibration curve of DustTrak for sampling PM2.5 from electronic cigarette emissions. The dashed lines stand for 95% confidence intervals.
Figure 2. The time series of the mean value of (a) PNC and (b) PM2.5 mass concentration at two locations, 0.8 and 1.5 m away from EC users. The number of samples (n) is also provided.
Figure 3. The mean (a) PNC and (b) PM2.5 of SHV emissions at increasing distances from the EC users. The dots above or below the boxes represent the outliers, which are beyond 1.5 IQR (Interquartile Range). The upper line above each box represents the maximum data within 1.5 IQR, and the lower line below each box represents the minimum data within 1.5 IQR. The solid line in each box represents the median value, and the dash line in each box represents the mean value.
Figure 4. The mean PNC per puff (particles/cm3) for each subject. The dots above or below the boxes represent the outliers, which are beyond 1.5 IQR (Interquartile Range). The upper line above each box represents the maximum data within 1.5 IQR, and the lower line below each box represents the minimum data within 1.5 IQR. The solid line in each box represents the median value, and the dash line in each box represents the mean value.
Figure 5. The particle size distributions of SHV aerosols measured at (a) 0.8 m and (b) 1.5 m away from EC users. CMD: count median diameter; GSD: geometric standard deviation.
