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![[Barrow]](https://webarchive.library.unt.edu/eot2008/20090110114448im_/http://www.esrl.noaa.gov/gmd/images/brwstation_small3.jpg)
![[Trinidad Head]](https://webarchive.library.unt.edu/eot2008/20090110114448im_/http://www.esrl.noaa.gov/gmd/images/thdstation_small3.jpg)
![[Mauna Loa]](https://webarchive.library.unt.edu/eot2008/20090110114448im_/http://www.esrl.noaa.gov/gmd/images/mlostation_small3.jpg)
![[American Samoa]](https://webarchive.library.unt.edu/eot2008/20090110114448im_/http://www.esrl.noaa.gov/gmd/images/smostation_small3.jpg)
![[South Pole]](https://webarchive.library.unt.edu/eot2008/20090110114448im_/http://www.esrl.noaa.gov/gmd/images/spostation_small3.jpg)
