# The Air Quality Standards (Scotland) Regulations 2010, Paragraph


(a) To be measured over three consecutive hours at locations representative of air quality over at least 100 km2 or an entire zone, whichever is smaller.
Information and alert thresholds for ozone
Purpose
Averaging period
Threshold
Information
1 hour
180 µg/m3
Alert
1 hour
240 µg/m3

---
Source: https://www.legislation.gov.uk/ssi/2010/204/schedule/5/paragraph/wrapper3n1 (the official version)
Page: https://openlegislation.uk/air-quality-standards-scotland-regulations-2010/schedule-5/paragraph-wrapper3n1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.