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IV. Conclusion

In summary the results are:

- Measurements of stratospheric ozone profiles using DIAL technique during 1999 and 2000 and for the first time on Buenos Aires.

- Relative differences of solar spectral irradiance obtained from the equation of radiative transfer, including the measured profiles and the TOMS and SAGE II ones. To detect these differences an spectroradiometer in the range UVB must be used.