Table:
male
female

total number
1,242,600
1,352,000

mean age
38.6
39.4

% distribution

age group

0 to 24
22.5
19.8

25 to 44
41.7
44.4

45 to 64
29.0
27.2

65 or older
6.8
8.6

immigration category

economic class

principal applicant
26.2
12.2

dependant
23.5
33.7

family class
28.9
37.4

refugee class
16.4
12.7

other
5.0
4.0

landing year

1980 to 1989
23.2
22.3

1990 to 1999
44.1
44.9

2000 to 2006
32.7
32.8

source world region

united states
2.1
2.6

caribbean/central and south america
10.1
11.0

western europe
8.1
7.3

eastern europe
12.6
12.6

sub-saharan africa
4.8
4.6

north africa/middle east/west asia
9.4
7.7

south asia
19.3
17.6

south east asia
11.9
14.1

east asia
20.7
21.8

oceania
0.7
0.7

A merged cell in a table could be represented by the JSON {'top-left':(R1, C1), 'bottom-right':(R2, C2)}, where '(R1, C1)' and '(R2, C2)' signify the (row_id, column_id) of the top-left and bottom-right cells in the merged area. Using the shown table image, locate all merged cells and provide their coordinates in this format. Bear in mind that row and column IDs begin from 1.

The merged cell areas are as follows:
{'top-left':(4, 2), 'bottom-right':(4, 3)}
{'top-left':(5, 2), 'bottom-right':(5, 3)}
{'top-left':(10, 2), 'bottom-right':(10, 3)}
{'top-left':(11, 2), 'bottom-right':(11, 3)}
{'top-left':(17, 2), 'bottom-right':(17, 3)}
{'top-left':(21, 2), 'bottom-right':(21, 3)}.