Table 3. Correlation coefficient between estimated within year variation between in vitro fertilization (IVF) success rate and concentration levels of sulfur dioxide (SO₂), carbon monoxide (CO), nitrogen dioxide (NO₂), particulate matter less than 10 μm in diameter (PM₁₀), and particulate matter less than 2.5 μm in diameter (PM_2.5) along with P-values in parentheses.

	SO2	CO	NO2	PM10	PM.2.5
IVF success rate	0.481 (0.114)	0.558 (0.059)	0.787 (0.002)	0.719 (0.008)	0.758 (0.004)