Planxton decays vere
unusugéliy uniform, as shown
im Pigure 13 and Table lo.
The meen und standard error
of tne slopes of these 18
decays are -1.39 * .02.
This average for the decays
is less stsep than the de-
1000
oe
At Belle Island, the
Deep Entrance, the Wide
oof
Passage, and Leroy Island,
the declines greatly ex-
At Vera the scatter
RADIOACTIVITY
ness.
of decline potnts is so
great that the slope is
highly uncertain.
At the
Mike crater the unusually
gradual decline (-1.04)
‘due
2e
ceeded the decays insteep-
to contributions from
\\
\
the crater itself, accounts
for one of the rare instances of decay exceeding
decline.
In general,
plankton declines were
steeper than decays.
.
i?
eo 16
OAYS AFTER may 14 1996
for plankton decey curves of F1,.
Curve Plate Locelity
no.
no.
1
2
19024 belle
8277 Belle
3
4
5
R264 Wide Passage
8258 belle
4267 Belle
6
7
828< Deep Fntrance
19017 Leep Fntrance
4
6234 Kelle
bete of
collection
Deys after Slope
May 14,
ecay
1954,
range
12/27/54 230-950
11/6/54
yy 5@
9/1/84
/34
195-940
195-940
—-:147+640
106-940
11/6/54 196-940
12/17/54 240-940
4 “ee
134-940
330-460
9
1o
19034 belle
8220 Leroy
2
[12/88 198-940
6/9/54
§$5-040
ll
12
13
he
is
16
1?
4a
19058 Belle
3/21/56
8293 Mine crater
19067 belle
RQv2 Wine crater
11/27/54 238-640
3/21
340-960
11/27/84 480-940
R253 Bide Passage
19066 Leroy
8217 belle
9/1/54
3/14/$5
S/iv/$e
R294 Mime creter
11/27/84 238-940
146-060
330-946
1-830
-
Fig.
13.
negative
SeckyDestine
ash besis,
Table 1.
1.46
1.56
1.38
1.37
1.52
1.36
40
-%4
ott
51
3%
227
45
46
$8
28
4
1,3
52
82
2. 37
52
l. 82
hk.
1.
1.
i 93
ee ee ee ee
Lets
me i ee ee
Tacle 10,
mee
datePethe semen,
Pu
cline of -1.74, ash basis.
33
252
252
99
52
aS
~Ww
52
200
37
90
Se
13
‘000