Ionograms from Maui following Shot 1 are presented in Figs. 3.30 oa and 3.31, with the elapsed time from zero indicated in hours and . minutes, A brief descriptio: follows: normal picture possible 2- and 3ehop F2 oblique echoes 2ehop oblique near high-frequency end of F2 trace normal definite cblique 3-hop return; also probable 2-hop oblique +6h 18m ~ definite 2-hop oblique returns +4h +4h +5h +5h +6h a A oe . 15m 45m 18m 45m 15m = = = - + 4h 15m —- L +5hasm 000i . 6co. 400r 200 +4N 45m vp 7, i: +6hiSm 800 yw . 600} 400 pe be 200q—= KM + +5h18m’ 7 800— foe 600 — de +*6h18m 400-= 200 -—< 2 ‘: 3 4 6 8 10 14 mc 2 3 4 6 € 10 Figs 3.30 - Ionospheric Records at Maui Following Shot 1, Showing Early Possible Effects and Start of Definite Effects . 41 SECRET 4 mc

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