File:Langfang air quality from 2014-2018.png
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editDescriptionLangfang air quality from 2014-2018.png |
English: Green: lowest AQI each month; blue: average AQI each month; maroon: highest AQI each month. Higher numbers indicate more polluted air. |
Date | |
Source | Own work |
Author | Tianjinren88 |
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current | 21:11, 5 October 2018 | 862 × 371 (46 KB) | Qwwxqz (talk | contribs) | Cross-wiki upload from en.wikipedia.org |
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