Division B.7 Sampling rates

Valid hourly averages or averages for shorter reference periods shall be calculated in accordance with Article 44 for:

1. (a)

   concentration of N₂O in the flue gas;

2. (b)

   total flue gas flow where this is measured directly and where required;

3. (c)

   all gas flows and oxygen concentrations necessary to determine the total flue gas flow indirectly.