+ 3h 30m to +4h 40m (Figs 3.27) ~ definite oblique
throughout
echoes
Fige 3027 = Ionospheric Records at Guam Following Shot 5, Showing
First Period of Effects
+ 5h to +6h 40m (Fige 3.28) = first two pictures (at + 5h
and + 5h 30m) show quite normal F2 layer with increasing
virtual beight due to formation of Fl layer (barely
visible because of sporadic BE); next three pictures show
oblique returns; last victure is normal except for me
usual stratification,
57
SECRET