File name: graph of 2015 conditions
Original Resolution: 610 × 271
File Size: 33 KB (MIME Type: image/jpeg)
Total ozone at altitudes between 12 and 20 kilometers measured by balloon-borne sensors over the South Pole between late winter (July) and early summer (January). The pink line (2015) dips below the median (gray line) and stays there later into October than usual. Graph adapted from original provided by NOAA ESRL Global Monitoring Division.