The graphs below, provided by the CSIRO Oceans and Atmosphere, illustrate the global observations of the impact the Montreal Protocol on the levels of ozone depleting substances in the atmosphere, and suggest the impact into the future to 2050:
Effective Chlorine (all substances) in the atmosphere and the scenario with and without the Montreal Protocol
Source: CSIRO Oceans and Atmosphere
Effective Chlorine (all substances) in the atmosphere
Source: CSIRO Oceans and Atmosphere
Chlorofluorocarbons
Source: CSIRO Oceans and Atmosphere
Methyl bromide and Halons
Source: CSIRO Oceans and Atmosphere
Total Ozone and its relationship with Effective Stratospheric Chlorine
Source: CSIRO Oceans and Atmosphere