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NASA GES DISC provides the SBUV/Nimbus-7 Level 2 Version 8 dataset, containing daily ozone profile and total column measurements. Data spans from October 31, 1978, to June 21, 1990, with profiles at 21 pressure levels and a nadir footprint resolution of 180 km x 180 km. Measurements are derived from solar irradiance and backscattered radiance at 12 specific ultraviolet wavelengths between 256 and 340 nm.
Data is provided in ASCII text format, with one file per day. The original release was on a DVD from 2004, which is no longer available. License is listed as 'other-license-specified'; users should verify terms with NASA.