Average of total ozone values for September 2008

Monthly averages of total ozone values for September over the South Pole for the last 10 years using measurements from the Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY) sensor aboard ESA's Envisat, the Global Ozone Monitoring Experiment (GOME) aboard ESA’s ERS-2 and its follow-on instrument GOME-2 aboard EUMETSAT’s MetOp.