"Article 3 the average concentration of sulphur dioxide in the atmosphere generally in the time 1 hour must not exceed 0.30 million in the best (ppm) or less than 780 maikhrokram per cubic meter," he said.
"Article 3, the average concentration of sulfur dioxide in the atmosphere, generally in 1 hour shall not exceed 0.30 parts per million (ppm) or less than 780 micrograms per cubic meter."
"No. 3 average concentration of sulfur dioxide in atmosphere by general at the time, one hour will not exceeding 0. 30 ppm. (PPM) or over 7, 80 micrograms per cubic meter. "