Table 3

Relative changes in auroral zones surface areas, and distances from Leeds and Dunedin, caused by l = 1, 2, 3 components of the SV, magnified by a factor of 100 (indicated in the table). The reported values are obtained as the changes relative to the unperturbed 2020 auroral zones, calculated from the IGRF-13 model. These values refer to the results shown in Figure 10 and have been reported in the table for ease of quantitative comparison.

SV degree, l	1 (× 100)	2 (× 100)	3 (× 100)
$\frac{\delta A_N}{A_N}$	−0.018	−0.035	0.0019
$\frac{\delta A_S}{A_S}$	0.058	−0.015	−0.017
$\frac{\delta d_{\mathrm{Leeds}}}{d_{\mathrm{Leeds}}}$	0.14	−0.012	−0.044
$\frac{\delta d_{\mathrm{Dunedin}}}{d_{\mathrm{Dunedin}}}$	0.099	0.086	−0.032