Figure 3
From: Persistent extreme ultraviolet irradiance in Antarctica despite the ozone recovery onset
The number of late spring days with “very low” values of the total ozone column has not significantly changed during the last two decades. Changes from 1996–2005 to 2011–2020 in the number of days with “very low” TOC values (defined according to the 10th percentile), over the periods: 1 September–15 October (a) and 16 October–30 November (b). Data from the TOMS instrument on the Earth Probe satellite and from the OMI instrument onboard the Aura satellite were used in plots (a,b). The plots were generated using Python’s Matplotlib library71.
