Ozone Hole Progress Book

OzHole features a booklet that charts the Southern Hemisphere's average yearly ozone hole size from 1979 to 2020. The size of the hole is compared in relation to the total area of one or more continents or countries in square kilometers. The measuring chart at the right side of the spreads show the global ODS (Ozone Depleting Subtance) production for the depicted year in the tonnes units.