站點(diǎn) | 空氣質(zhì)量類別分布(天數(shù)) | 首要污染物分布(天數(shù)) | 優(yōu)良率% | 優(yōu)良天數(shù) | 考核天數(shù) | PM2.5優(yōu)良天數(shù) | PM2.5考核天數(shù) | PM2.5優(yōu)良天數(shù)比例 | |||||||||||
優(yōu) | 良 | 輕度污染 | 中度污染 | 重度污染 | 嚴(yán)重污染 | SO2 | NO2 | PM10 | CO | O3 | PM2.5 | ||||||||
岳陽(yáng)縣 | 4 | 19 | 5 | 1 | 0 | 0 | 0 | 0 | 12 | 0 | 2 | 12 | 76.7 | 23 | 30 | 23 | 30 | 76.7 |