Figure 1
Comparison of sperm mtDNAcn (A) and mtDNAdel rates (B) following the high (winter) and low (summer) air pollution periods. The vertical height of each box represents the range of 25–75% of the data (the interquartile range; IQR), the horizontal line within each box represents the median value, and the upper and lower extensions represent the largest and smallest values that were determined to not be outliers. The open circles (○) denote simple outliers, i.e., samples that fell more than > 1.5 IQR from the 25th percentile of the distribution, whereas asterisks (*) denote extreme outliers, i.e., samples that fell > 3 IQR from the 25th percentile of the distribution.
