Ft. 100,000 F>—, 7-7 T yl T t {0 y © Km. IT —_T—TTT_ 3 AIRCRAFT GBSERVATION NRL SURFACE STATION 7 80,000/;- 4 5 366 332 by a5 126 || | 26 | 209 60,000 La| 249 349 me O76 236 37 ° s Inn t's NR 740 ONR MEAN NR -7 * . O 76 L 20 4 23 _TROPOPAUSE oo NR 40,0000 '§ 7 125 || 166 - 25 270 36 NR B NR ~ONR ~ 4 -. - 10 20,000-- . 0 NR 0D WR NR NR OWA NR 0.6 A2 Oo WR WR 90° | 60° O WR NR O WR + 0 o L 5 Q o dg 30° a wR 4 lb le O° NORTH le po 1° 30° jg | J 60° to 90° SOUTH Rh d/m/IOOO sef (corrected for decay to Aug. 12, 1958) MAY i960 Pig. 6 -- Rhodium-102 distribution 34