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Table 2

Positions of the 13 null points embedded close to the active region (in Mm measured from the centre of the domain (x,y) and hight above the photosphere (z)).

# x y z

1 35.4 –29.3 0.03
2 36.1 –22.5 0.6
3 32.6 –20.7 0.01
4 31.8 –19.2 0.07
5 36.0 –17.1 0.07
6 36.1 –17.1 2.7
7 18.8 10.4 0.8
8 37.9 18.7 14.1
9 41.1 25.2 0.04
10 –3.0 28.5 6.5
11 37.6 29.1 1.4
12 36.8 31.1 0.31
13 –5.3 32.1 0.1

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