OMI Ozone Profile data (OMO3PR) is given in terms of the layer-columns of ozone in Dobson Unit (DU) for an 18-layer atmosphere. The layers are nominally bounded by the pressure levels: surface pressure, 700, 500, 300, 200, 150, 100, 70, 50, 30, 20, 10, 7, 5, 3, 2, 1, 0.5, and 0.3 hPa.
Detailed information about this product can be found at:
OMO3PR README File
Full OMO3PR data, as well as subsets of these data over many ground stations and along Aura validation aircraft flights paths are available through the Aura Validation Data Center (AVDC) website