Fig. 2: Change in zonal mean MLS/Aura ozone observations for the period of 2004–2022.
From: Potential drivers of the recent large Antarctic ozone holes

Results are presented across latitudes 45∘S–82∘S and pressure levels 0.68–215 hPa (approximate altitudes in km given on the right) for the months of a September, b October, and c November. The coloured contours (ppmv/year, contour level intervals are 0.01 ppmv/year) represent the slope of a linear fit across the range of years. All volume mixing ratio changes that are significantly different from zero (at ≥95% level) are indicated with black hatching.