Table A12: 10 year Trend for O3 Winter Means (January-April, October-December)
Winter Mean (ppb)
Notes:
INS indicates there was insufficient data to calculate a valid winter 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.
Ontario’s move to new measurement technology in 2013 has resulted in increased PM2.5 annual means; the increases are not an indication that the air quality has changed, but that the measurements are more accurate. For more information see Technical Discussion – New PM2.5 Measurement Technology in Ontario.
Report an issue with this data
Submit a report if you are experiencing issues with the data resources in this dataset.
Additional information
- Last updated
- July 26, 2023
- Created
- July 28, 2023
- Format
- text/csv
- File size
- unknown size
- Licence
- Open Government Licence – Ontario
- Name
- Table A12: 10 year Trend for O3 Winter Means (January-April, October-December)
- Type
- Data
- Language
- English
- Data made public date
- January 1, 2016
- Data range start
- January 1, 2015
- Data range end
- December 31, 2015
Help us improve the Data Catalogue
Provide feedback about our data and how you’re using it.