Table 1—Sr’®, Sr, AND Ba”® ACTIVITIES IN FALLOUT
IN NEW YORK CITY
Month
sr*@
sr®*
Balto*
July
0.34
0.44
0.43
26.0
20.3
13.0
45.5
October
November
0.34
0.41
20.9
8.5
20.9
2.43
December
0.62
12.7
3.41
August
September
aa
Average mc/sq mi
60.0
33.1
*Extrapolated from counting date to last day of sampling
month.
200
ee ee ee
AUG
4957
a
SEPT
l
OCT
L
NOV
COUNTING DATE
DEC
L
a te + Udtree a ee ee
ee eee
400
JAN
1958
eee
TOTAL PB ACTIVITY, MC/SQ MILE
450
358
Fes eee eee
Fig. 2— Comparisonof total 8 activity from three collection units..-, roof pot; @, roof funnel; ©, roof funnel and resin.