Table 2: North-South, East-West and polarity asymmetry in the number of structures (%) for various selections in term of size, polarity and hemisphere (defined as the difference in numbers N of structures - first criterion minus the second one - divided by their sum). The uncertainties correspond to 1/$\sqrt {N}$. The area A is in Mm2.
Selection 25 G (%) 40 G (%)
North, $S\!outh$ $-0.43\pm0.05$ $0.98\pm0.07$
North, $S\!outh$ (A>800) $2.07\pm0.52$ $0.61\pm0.61$
North, $S\!outh$ (40<A<800) $2.07\pm0.10$ $3.03\pm0.13$
North, $S\!outh$ (A<40) $-1.48\pm0.06$ $0.15\pm0.08$
B>0, B<0 $-2.96\pm0.05$ $-0.61\pm0.07$
B>0, B<0 (A>800) $-0.95\pm0.53$ $0.20\pm0.61$
B>0, B<0 (40<A<800) $-1.83\pm0.10$ $0.27\pm0.13$
B>0, B<0 (A<40) $-3.44\pm0.06$ $-0.99\pm0.08$
North, $S\!outh$ (B>0) $3.99\pm0.07$ $5.63\pm0.09$
North, $S\!outh$ (B<0) $-4.60\pm0.08$ $-3.61\pm0.10$
East, West $-3.23\pm0.05$ $-2.28\pm0.07$
East, West (B>0, North) $-3.67\pm0.10$ $-3.28\pm0.13$
East, West (B<0, North) $-1.55\pm0.11$ $-1.84\pm0.14$


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