Table 2. Descriptive Statistics on the Concentrations of O3 and Ambient Temperature Across Three Critical Sperm Development Periodsa.
| Exposure | Critical period | Mean ± SD | Min | Median | Max | IQR |
|---|---|---|---|---|---|---|
| O3 (μg/m3) | 0–9 day | 126.2 ± 37.5 | 39.5 | 132.4 | 193.8 | 50.5 |
| O3 (μg/m3) | 10–14 day | 129.4 ± 34.8 | 51.2 | 127.1 | 215 | 41.7 |
| O3 (μg/m3) | 70–90 day | 137.5 ± 15.3 | 109.8 | 136.1 | 176.5 | 25.6 |
| O3 (μg/m3) | 0–90 day | 136.0 ± 8.7 | 110 | 136.6 | 155.8 | 10.5 |
| Ambient temperature (°C) | 0–9 day | 23.5 ± 6.7 | 9.2 | 25.8 | 32.4 | 12.8 |
| Ambient temperature (°C) | 10–14 day | 24.3 ± 6.0 | 12.2 | 25.4 | 33.1 | 11.5 |
| Ambient temperature (°C) | 70–90 day | 26.1 ± 3.8 | 17.7 | 26.7 | 31.6 | 4.8 |
| Ambient temperature (°C) | 0–90 day | 25.8 ± 2.9 | 19.1 | 26.8 | 28.8 | 4.7 |
a
Abbreviations: IQR = interquartile ranges; O3= ozone; and SD = standard deviation.