전날 환경부 국립환경과학원은 최근 고농도 초미세먼지 발생에는 국내 요인이 55∼82%로 더 높다고 분석한 결과를 내놨다.
On the previous day, the National Institute of Environmental Research of the Ministry of Environment analyzed that domestic factors for the recent high-concentration ultrafine dust was 55 to 82 percent, which is much higher.