oy gto ee — naeae== 120 yw? Is 3 7 te i am ¥ nL eee pore oi} \ ¢ Ss FIGURE A531 e ie Bly RADIOACTIVE FALLOUT IN THE 24-HOUR PERIOD BEGINNING 7 1230 G.C.T, MARCH 25, 1954 MEY: aLTivity (aurat) PRECIPITATION ACTIVITY mw ovaveT® aT 100 OAvS AFTER GURST 160" | 1.9 120° 190° aor 4 38% 4 Bs ALL ACTIVITY 19 ASSIGNED TO BURST NO | .ORAVO UML.ESS OTHERWISE INDICATED BY GURST NUMBER 10 PARENTHESES. ~