OL ORREE
158
RADIATION STANDARDS, INCLUDING FALLOUT
FP FT TT TT
FETT
TT
eT
PT
et
Ld
rFrrstssrrrrrsrrFO
l
~
tT
FF
FF
-13
Fr
daseRRR2s ceeeREE
irt|
197'4
L
é
It
xn
ACTIVITY IN CURIES/CUBIC METER OF AIR
10
Mean Time T= 14 mo
1975 =
Meon
Time T= 23mo
-
*%
_|
—q
a
4
Pictu u Ley tet yp tg_ tt Li tEeEtegytyyr yy
SOND JFMAMJJASOND JFMAMJJASONODOJ
1958
1959
DATE
1960
i961
Fravurr 1.—Cs™ in surface air at Argonne National Laboratory and the determination of mean stratospheric residence time.