For purposes of comparison, an ionogram for a normal day is given in Fig. 3.4, showing a typical sporadic-E trace from 2.4 to 4 m at 115 kn (intermittent above 3.3 m). km " " the Hg abe ” fe? 800 A ao tet = we + | i 3 a x y. if <e 600 a 400 200 . Te eee! 3 ‘ “y ts i un ober Tee Bus i . py Teche wr 4, i $ bss 5 if te : Pea EE BE: “PET 3 TORRE ofRARE ERE: ott . HE HeeeT ‘hs } ab - EE TE TES =} back: bet |. ott: 78 0 tii} i me Figs 3.4 = Ionospheric Record for 0817 hours on a Normal Day, Showing Typical Sporadic-E and Felayer Traces at Rongerik To illustrate the unusual nature of the sporadic-E echoes ob- served at Rongerik following the shots, Figs. 3.5 through 3.8 are presented, each arranged to be read from top to bottm, starting at the left, with the elapsed time from zero indicated in hours and minutes. A brief description follors: Shot 1 plus (see Figs. 3.5 and 3.6) 34 1/2 min - first visible echo of any kind after the shot; Es at 110 kn . 42 1/2 min - Es at two levels = 110 and 150 km 46 min - Es (at two levels) goes above 8 me 47 nin - Es at several levels 52 min « further development of multiple Es 55 min = more scattering 28 SECRET