Table 4 STRATOS PHERIC RADIONUCLIDE CONCENTRATIONS BALLOON SAMPLES COLLECTED DURING SEPTEMBER 1968 LATITUDE, 31N SAN ANGELO, TEXAS ALTITUDE (KM) FLIGHT DAY HASL NUMBER COLLECTION UNIT ANALYTICAL LABORATORY 32 09 3002 AE-1 TLW 36 07 3000 AE-1 TLW GROSS GAMMA (CPM/KSCM) 706 .2 776 0%: Al 12 3009 _ HV3K TLW 714.1 OL ~- ITI PC/KSCM STRONTIUM--89 STRONTIUM-90 ZIRCONIUM-95 CERIUM-144 POLONIUM~-210 PLUTONIUM-238 PLUTONIUM-239 * 32 .7B * 65.0A * 3.88 1.06A * 24.0B * * * 2.338 * As One Standard Deviation of Counting Error is *s #e Standard Deviation Greater than Data Value. Gross Gamma Count more than Two Weeks After Collection. Be One Standard Deviation of Counting Error is 61.1A * 11.5A 24 .6 .792B 20% to 50% of Count. 50% to 100% of Count.