Publication: Magyar Közlöny
Issue: MK-2006-116 (Year: 2006, Number: 116)
Era: 2004-2010
Section: [22. számú melléklet a 217/1998. (XII. 30.) Korm. rendelethez]
Paragraph Index: 259

6. Critical levels (as defined in article 1) of ozone are determined to protect plants in accordance with the Convention’s Manual on methodologies and criteria for mapping critical levels/loads and geographical areas where they are exceeded. They are expressed as a cumulative exposure over a threshold ozone concentration of 40 ppb (parts per billion by volume). This exposure index is referred to as AOT40 (accumulated exposure over a threshold of 40 ppb). The AOT40 is calculated as the sum of the differences between the hourly concentration (in ppb) and 40 ppb for each hour when the concentration exceeds 40 ppb.

Source: https://magyarkozlony.hu/hivatalos-lapok/e8801ad1a2339c6a90e300ecaa44b3c5d78f642e/dokumentumok/fadc029b62d1cd2f7799be65ce1108b3118033e8/letoltes