This is the best tl;dr I could make, original reduced by 82%. (I'm a bot)

> The annual Antarctic ozone hole reached an average area of 8.9 million square miles between Sept. 7 and Oct. 13, 2022.

> Researchers at NASA and NOAA detect and measure the growth and breakup of the ozone hole with instruments aboard the Aura, Suomi NPP, and NOAA-20 satellites.

> When the polar sun rises, NOAA scientists also make measurements with a Dobson Spectrophotometer, an optical instrument that records the total amount of ozone between the surface and the edge of space - known as the total column ozone value.

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