oO RylO3
{
10+
Br
g
ao
Dark Muscle
6
bre
f
a
“A
i
/
i
!
i
f
/
f
!
f
!
f
+
@
=
“et
4k
0
M4
©
2:E
4
w
Aa
.
o
a
a
5
.
0
o
eee OO Ten
Oo eee OO dT
AS =a aaaO- =
May
i
_.-0
oe eee2 ~f---
June
July
a
August
September
October
Month of Landing
4r
Light Muscle
oN
5
~
x40
.ao
Om
0
Neen mee ee nee 8 ee eee Osten 2 - O
May
Figure l,
June
July
August
September
1
October
Average values by month of landing for potassium-40,
zirconium-95--niobium-95,
and ruthenium-103 in light
muscie and dark ruscle of 446 tuna landed at Tokyo
an
avo2.
eS