Latest in situ program data figures can be found here.
Latest flask program data figures can be found here.
![](https://webarchive.library.unt.edu/web/20170121152354im_/https://www.esrl.noaa.gov/gmd/hats/about/cfcs_med.png)
Atmospheric concentrations of important halocarbons and other chemicals at twelve sampling sites using either continuous instruments or discrete flask samples.
![](https://webarchive.library.unt.edu/web/20170121152354im_/https://www.esrl.noaa.gov/gmd/hats/about/hcfcs_med.png)
Observed Atmospheric Changes for Substitute Halocarbons from the NOAA/ESRL/GMD Flask Sampling Network.
![](CFCs_Newman_2010.png)
Combined datasets from for the main chlorine containing gases that are regulated by the Montreal Protocol.
Measurements are from four NOAA baseline observatories and Niwot Ridge in Colorado.