N
.j:o.
.j:o.
Table 2. International Indian Ocean Expedition (1960-1965), density of samples
Poor coverage
Moderate coverage
Areas
Limit
Total No.
Total No.
Without
1-5
6-10
11-20
Good
of 5° Sq.
of samples
samples
samples
samples
samples
coverage
No. of
%
No. of
%
No. of
%
No. of
%
No. of 0/0
No. of
%
No. of 0/0
5° Sq.
Samples a
5° Sq.
5° Sq.
5° Sq.
5° Sq.
5° Sq.
North
25°N-5° S
69
32.1
1. 304
61.3
23
33.3
21
30.4
14
20.3
11
15.9
Indian
2. 303
61.9
26
37.7
25
36.2
8
11.6
7
10.1
3
4.3
Ocean
35°E-105°E
3. 279
54.9
22
32.0
26
37.2
15
21.7
5
7.2
1
1.4
4. 261
60.8
30
43.5
19
27.5
12
17.4
7
10.2
1
1.4
Central
5°S-25°S
69
32.1
1. 119
24.0
41
59.4
21
30.4
5
7.3
2
2.9
:-l
Indian
2. 120
24.5
42
60.9
21
30.4
1
1.4
5
7.2
".,
Ocean
30° E-120° E
3. 131
25.8
34
49.3
27
39.1
7
10.2
1
1.4
".,
4. 100
23.3
42
60.8
22
31.9
5
7.2
~
South
25° S-45° S
77
35.8
1.
073
14.7
53
68.8
20
26.0
3
3.7
1
1.3
0
Indian
2. 066
13.6
54
70.2
19
24.7
3
3.9·
1
1.3
Ocean
20° E-120° E
3. 098
19.3
48
62.4
22
28.5
6
7.7
1
1.3
4. 068
15.9
48
62.2
26
33.8
3
3.9
Indian
25°N-45°S 215
100
1.
496 100
117
54.4
62
28.9
22
10.2
14
6.5
Ocean
2. 489 100
122
56.7
65
30.2
12
5.6
13
6.0
3
1.4
20° E-120° E
3. 508 100
104
48.4
75
34.9
28
13.0
7
3.3
1
0.4
4. 429 100
120
55.8
67
31.2
20
9.3
7
3.3
1
0.4
a
Numbers in column 5 indicate periods as follows:
1.
January- March (NE monsoon)
2.
April- June (Transitional)
3.
July-September (SW monsoon)
4. October- December (Transitional)