With a three-parameter analytical model, th ozone profile below 10 mbar (~30 km) to the surface is derived from the Nimbus 4 satellite backscattered ultraviolet and infrared measurements. Comparison of the derived profiles with those observed by ozonesondes shows that gross features are satisfactorily reproduced. Meridional cross section of the ozone partial pressure derived from the satellite data reveal the significant equator-to-pole features, as well as seasonal variability. An examination of the sensitivity of the method shows that an error in infrared radiance of ~1 erg (erg cm-1 s-1 sr-1) leads to an error of about 10 mbar in the weighted mean pressure p of the ozone layer in the tropics, while at high latitudes the corresponding error in p is much larger.