Table:
text: National Ambient Air Quality Standards
Standards
Standards
Pollutant Type_ Standard Averaging_Time Regulatory_Citation
SO 2 Primary 0.14 ppm (365 μg / m 3 ) 24-hour 40 CFR 50.4(b)
SO 2 Primary 0.030 ppm (80 μg/m³) annual 40 CFR 50.4(a)
SO 2 Secondary 0.5 ppm (1,300 μg/m³) 3-hour 40 CFR 50.5(a)
PM 10 Primary and Secondary 150 μg/m³ 24-hour 40 CFR 50.6(a)
PM 2.5 Secondary 35 μg/m³ 24-hour 40 CFR 50.7(a)
PM 2.5 Primary 15 μg/m³ annual 40 CFR 50.7(a)
CO Primary 35 ppm (40 mg /m³) 1-hour 40 CFR 50.8(a)(2)
CO Primary 9 ppm (10mg/m³) 8-hour 40 CFR 50.8(a)(1)
O 3 Primary and Secondary 0.12 ppm (235 μg/m³) 1-hour 40 CFR 50.9(a)

Question: What is the averaging time when the regulatory citation is 40 cfr 50.4(b) in the National Ambient Air Quality Standards?

Question: What is the regulatory citation if the standard under National Ambient Air Quality Standards is 15 μg/m³?

Question: Regarding National Air Quality Standards, if the regulation is 40 cfr 50.7(a) and the type is primary, what is the pollutant?

Question: What is the nature of the national air quality standards if the averaging time is 1 hour and the norm is 0.12 ppm (235 μg/m3)?

Question: In National Ambient Air Quality Standards, what is the type when the regulatory citation is 40 cfr 50.9(a)?