Fig. 5From: VHF radar measurements of momentum flux using summer polar mesopause echoesExamples of the distribution of scattering angles for three heights: 83.1 km, yellow; 85.8 km, red; and 88.8 km, blue. The median values are 6.8°, 7.4° and 8.7°, respectively. These results represent the mean of 21-min averages. The number of values determined for each of these heights is 197, 348 and 302 from a possible 502 (39%, 69% and 60%, respectively)Back to article page