=+ ERB AN Saee ee pti oid
<
ob coca vibe orchit onRRMESrataiear 8
2
gt
*
. ies i bode wae ieee
-19-
the data are shown separately, and other
permitted comparison,
data appear in columns headed with question marks for mesh,
Table 9 shows for the paired tows the ratio of the activ-
ity per unit weight in coarse mesh to that in fine (No.6/No.20,
on both a wet and ash weight basis.
Ratio of redicectivity in tows vith coarse mesh to fine mesh
(#6A%20) on vet and ash veight bases.
gir temlet tay =
or No. 20 of 173/inch.
usually either No. 6 of 74/inch
Table 9.
Beh we.
wp PhaleeWare an
_Date
1958
Belle
Hike
Crater
Vera_
Ash
Wet
Ash
1.41
33
655
6/9
27)
MS
49°
=#1.23°
95
«96
-21
0.2500
iw
wT
1.39 1.18
3.62
3.67
-59
.70
1.61
1.77 12.0
6.21
.78
55
.80
6.41
2.92
6.8
1.43
9ss.38
1.65
1.38
1.32
4h
1.85
1.97
7.50 6.56
-22
1.02
10/le2
36s HT
12/6
-31
-034
(1.56
Th
11/26
33.61
11/27
85
.62
1,82
4,21
11/27
12/3
42.60
12/17
18
89
.90
-3%6
Wet
Ash
2.39
4200.71.09
11/26
Ash
Leroy
8%
9/1
Wet
Wide
Passage
Wet
2.25
Ash
Deep
Entrance
5/19
7/6
Wet
Data from Tables 7 and 8.
1.11
-%
1.39
1.26
2.20
95
1.57
1.13
1.68
1,32
1.69
-98 1.12
83
Wat
Ash
TT
2.00
1.78
3.95
1.24
86
Between the northern localities of Belle Island and the
Mike crater and the southern localities of Wide Passage and
.
ase ey
RET EE
Leroy Island, there was a difference using the t test,
significant at the 2% level on the ash basis.
The reason is
not apparent for this association of high counts with fine
mesh nets at northern, and with coarse at the southern and
A oom
ele on
oe
wl
western localities.
Whereas, in 1952 (WT-616) significantly higher radioac-
tivity occurred in fine mesh net hauls than in coarse, the
present data show wide variation. On the wet basis the coarse
mesh was higher in 18 pairs and the fine mesh in 25 pairs,
while on the ash basis the figures were reversed, the coarse
mesh was higher in 25 pairs and the fine mesh in 18 pairs.
Thus, neither wet nor ash basis showed a significant difference due to mesh size.