Concept: AOT 40 forest protection in the reportingmetric vocabulary

Concept URI	http://dd.eionet.europa.eu/vocabulary/aq/reportingmetric/AOT40f
Preferred label	AOT 40 forest protection
Definition	Accumulated Ozone Exposure 40 (expressed in (μg/m3) ∙ hours) means the sum of the difference between hourly concentrations greater than 80 μg/m3 and 80 μg/m3 between 1 April to 31 September using only the one-hour values measured between 8.00 and 20.00 Central European Time (CET) each day.
Notation	AOT40f
Status	Valid
Status Modified	22.03.2013
Accepted Date	22.03.2013
Not Accepted Date