190 5 FOOTE 3.0 rr Lu zz 0.19 IN. RAIN <4 ea “* 0.07 IN. RAIN 5S 20 |22 8 fF >. a4 IN. RAIN <U Lint 59 z Oo — 6 y 1.0 09 0.8 < oc a (3031123 45 6 7 8 F 101112 13 14 15 1617 18 19 20 21 22 23 24 25 26 27 28 29 30 JUNE FRACTION OF AMOUNT PRESENT ON DEC. 22, 1962 Fig. 8—Bismuth-214 effective surface amounts as a function of time, 1964, SNOW COVER 7.4 1N. SNOW 1.33 IN. MOISTURE 1.5 1.0. 123 4 5 6 7 8 9 10 1112 13 14 15 16 17 18 19 20 23 22 23 24 25 26 27 28 29 303) JANUARY 3.0 SNOW COVER “EDT Bp Ea 7.4 1N. SNOW |, 2.0 Panter eer Hepa 1.0 tn - | 1.5 F : . | 1.33 IN. MOISTURE, : Eh A 1234 We, | |. | pntaeanatyoe 1.28 IN. <! LMS ete : B 5 6 7 8 9% 10 111213 1415 1617 18 19 20 21 22 23 24 25 26 27 28 29 3031 JANUARY Fig. 9—Thallinm-208 and cestum-137 effective surface amounts as a junction of time, 1964, 0.60-Mev photopeaks of **°Sb appear. The '**Sb field calibration stan- dard is shown in Fig. 12. The removal of '*°Sb amounts from the data of Fig. 9 leaves the photopeakat 0.51 Mev, as Shownin Fig. 13. At this point it is difficult to determine the balance of inputs where 103Ru, 106Rh, and annihilation radiation may exist in large or small amounts. Figure 14 indicates the field spectral shapes for 035Ru, 106Rh, and annihilation radiation.