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. 2019 Jun 17;6:82. doi: 10.1038/s41597-019-0089-3

Table 1.

Hypothetical bilateral migrant stock data. On the left side are migrant stock data at time t. On the right side are migrant stock data at time t + 1.

Birthplace Place of Residence (t) Birthplace Place of Residence (t + 1)
A B C D Sum A B C D Sum
A 100     10     10        0    120 A     95         5     15         5     120
B     80 180     10     90    360 B     75 225        5    55    360
C     30     10 140     40    220 C     55         0 115    50    220
D     60     70     10 160    300 D     35     25     25 215    300
Sum 270 270 170 290 1000 Sum 260 255 160 325 1000