File:United States Heating Degree Day map, 1961-1990.jpg
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Summary
| Description |
English: Annual heating degree days in the United States, based on normal period 1961-1990. |
| Date | Unknown date |
| Source | http://lwf.ncdc.noaa.gov/img/documentlibrary/clim81supp3/annualheatingDD_hires.jpg , from http://lwf.ncdc.noaa.gov/oa/documentlibrary/clim81supp3/clim81.html |
| Author | Unknown author |
Licensing
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This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:21, 13 December 2009 | | 2,100 × 1,600 (644 KB) | Teofilo | {{Information |Description={{en|1=Annual heating degree days in the United States, based on normal period 1961-1990.}} |Source=http://lwf.ncdc.noaa.gov/img/documentlibrary/clim81supp3/annualheatingDD_hires.jpg , from http://lwf.ncdc.noaa.gov/oa/documentli |
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