Abstract
Spaced-antenna drift measurements between 60 and 100 km, from radiowave partial reflections, are presented in the form of zonal and meridional profiles for May and June 1969, and as a time cross section of zonal winds, from February–June 1969, for 52N, 107W. ROCOB data from 54N, 110W, up to 60 km, are used to complete the profiles. The profiles show satisfactory agreement with profiles derived from a recent model of zonal and meridional winds.