… from the source. Example calculation x/tower: The emission rate of the substance so2 is 1000 g/s, for the annual average at a distance of 10 km and a wind speed of 5 … estimate provides 1000g/s/(2500m*10000m*5m/s) = 8 µg/m³. The calculated value (file so2-j00z.dmna) is between 0.2 and 2 µg/m³, depending on the direction from the … from the source. Example calculation x/tower: The emission rate of the substance so2 is 1000 g/s, for the annual average at a distance of 10 km and a wind speed of 5 …