01 Without prejudice to Annex I, the criteria for 'Required proportion of valid data' shall be used for checking validity when aggregating data and calculating statistical parameters
03 Limit value not to be exceeded more than 3 times a calendar year. Applies to Upper and lower thresholds.
07 Already in force since 1 January 2005
14 The required proportion of valid data for the Limit Value referes to the percentage of the hourly averages
30 Average Limit is the Limit Value, a level fixed with the aim of avoiding, preventing or reducing harmful effects on human health and/or the environment and not to be exceeded once attained
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