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Acknowledgements

The authors thanks to Dr. Jim Russell of the SAGE II team, and to the members of the Laboratory for Atmosphere, Goddard Space Flight Center/NASA, for the interesting exchanges of information of ozone profiles from SAGE II and of the algorithm TOMS respectively. To Pablo García of Rosario's Astronomical Observatory for his computational collaboration and to the Engineer M. Ginzburg of the SMN for the data of total ozone of the spectrometer Dobson. The present work has partial support from ANCYPT, CONICET, the U. N. Rosario, UNSAM and U. N. San Luis.