Review the data on the NASA website link given above. After reviewing the ozone hole data over Antartica, summarize the data. Answer the following three questions and discuss by supporting your answers.
1) Over a typical year, when is the ozone concentration normal and when is it at its lowest? Explain why.
2) Over many years going back as far as you can, describe any trends observed for the lowest annual concentrations observed.
3) Do you think the ozone layer is being replenished and the "hole" is filling in yet? The answers do not need to be long but should be supported by data obtainable from the website