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Graph last updated on 8 Dec, 2023. The size of the ozone hole is the area on the globe in million square km of ozone column values below 220 DU. Note that the Antarctic continent is about 14 million km², the USA is just over 9 million km², Italy is about 0.3 million km², and The Netherlands only 0.04 million km².

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  Ronald van der A, Bas Mijling
© KNMI/TEMIS, 2019