The Total Ozone Mapping Spectrometer (TOMS) database is provided by NASA and contains real-time measurements of ozone in the atmosphere from July 25, 1996 to the current date. The data may be viewed either as raw data (Data File) or as synthesized images (Global Image, North Pole Image, and South Pole Image). The goal of TOMS is to give scientists and the concerned public a better understanding of the link between atmospheric ozone distribution and the factors that alter it. Useful interpretive descriptions accompany the baseline images.