TITTT TTT TTT TTT IT TTT TT TTT TT TTT TTT TTT TTT TTT ttt ITT TTT TTT tty
Wes, PC/SCM
107! =
— +
=
—
Te
ed
7
4
i
_
/
—,
a
107? —
a
a
— ARGONNE, ILL.
Lp
1072
a”
—-— CHILTON, ENGLAND
—
Lidtitipithipiti it Mettler
Jan.— Dec.
Jan. — Dec.
Jan.— Dec.
Jan. — Dec.
Jan. — Dec.
Jan.— Dec.
1959
1960
1961
1962
1963
1964
Fig. 3—''Cs concentration in surface airy at Argonne, Ill., Washington,
D. C., and Chilton, England.
IP ETT TTT TR TTT TT TTT TTT TTT
Le
i
7
—
527, / 13?¢,
10! —
_—
1°
L
LT
LATE SEPTEMBER
1962
—— SURFACE, ARGONNE,ILL.
to"!
J
—-— SURFACE, CHILTON, ENGLAND
A 60,000 TO 65,000 FT, SAN ANGELO, TEX.
a
—
—
_
EARLY AUGUST na
a
Litippipgittiipy pti tiipliprstitigii darter WALL LY
Jan.— Dec.
Jan.— Dec.
Jan.— Dec.
Jan.— Dec.
1961
1962
1963
1964
Fig. 4—Zr/'"Cs activity ratio in surface air at Argonne, Ill., and
Chilton, England, and at 60,000 to 65,000 ft at San Angelo, Tex.