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ParticulateTrendWestUS.png (460 × 373 pixels, file size: 34 KB, MIME type: image/png)
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Summary
| Description |
English: A graph of particulate levels in the atmosphere as determined by the US Environmental Protection Agency |
| Date | |
| Source | https://www.epa.gov/air-trends/particulate-matter-pm25-trends |
| Author | United States government |
Licensing
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This image (or other media) is a work of an Environmental Protection Agency employee, taken or made as part of that person's official duties. As works of the U.S. federal government, all EPA images are in the public domain.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:52, 8 February 2019 | | 460 × 373 (34 KB) | Comfr | User created page with UploadWizard |
File usage
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