Appendix B for the 2015 Air Quality in Ontario report

Table A6: 2015 Nitrogen Oxides (NO_X) Annual Statistics

Unit: parts per billion (ppb)

Table A7: 2015 Sulphur Dioxide (SO₂) Annual Statistics

Unit: parts per billion (ppb)
SO₂ 1h AAQC: 250 ppb
SO₂ 24h AAQC: 100 ppb
SO₂ 1y AAQC: 20 ppb

Table A8: 2015 Carbon Monoxide (CO) Annual Statistics

Unit: parts per million (ppm)
CO 1h AAQC: 30 ppm
CO 8h AAQC: 13 ppm

Table A9: 2015 Total Reduced Sulphur (TRS) Compounds Annual Statistics

Unit: parts per billion (ppb)

Table A10: 10 year Trend for O₃

Annual Mean (ppb)

Notes:
n/a indicates pollutant not monitored.
INS indicates there was insufficient data in the 2^nd and/or 3^rd quarter to calculate a valid annual mean.
Station 15026 replaced station 15025 as the London site in 2013.
Station 46108 replaced station 46109 as the Mississauga site in 2008.
Station 52023 replaced station 52022 as the Kingston site in 2014.
Station 77233 replaced station 77219 as the Sudbury site in 2013.