Stratcom VI-A uv flux and 30-65 km low-background betasonde air density measurements. Final report 11 July 1975--31 July 1976

By use of a modified version of the CIAP UV Spectrophotometer, the altitude variation of 200-400 nm flux has been measured up to about 126 kft. Solar cycle-associated variability of the flux in the important 220 nm region is discussed. Results are also given for direct measurement of air density in the 30-65 km region.