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Table 4

Magnetic field configuration obtained by modelling LSD Stokes profiles with a centred or off-centred oblique dipole magnetic field.

Lines i β Bpol d Δψ B+ B
deg deg G R G G

All 75  ±  4 27  ±  3 –338  ±  33 0.086  ±  0.018 0.5815 0.5848
All 67  ±  5 43  ±  5 –289  ±  28 0.19  ±  0.05 0.054  ±  0.015 0.5560 0.5598 171 –543
He 77  ±  5 25  ±  4 –261  ±  37 0.099  ±  0.026 0.4852 0.4886
He 69  ±  5 38  ±  5 –244  ±  32 0.26  ±  0.07 0.051  ±  0.018 0.4623 0.4660 122 –602
All but He 73  ±  4 35  ±  4 –560  ±  60 0.084  ±  0.021 0.8540 0.8582
All but He 53  ±  8 52  ±  6 –418  ±  46 0.18  ±  0.04 0.038  ±  0.017 0.8072 0.8118 254 –758

Notes. Column 1 indicates which observed LSD profiles have been fitted, while the following seven columns show results from the models: the inclination angle i (Col. 2), the obliquity angle β (Col. 3), the polar field strength Bpol, the off-centring of the field along the magnetic axis d, the phase shift between the model and the observations Δψ, the minimum reduced χ2 value of the multi-dimension surface, the reduced χ2 value with 3σ errors on the parameters (99.7% reliability). 3σ error bars are also given on the fitted parameters. The last two columns indicate the strength of the magnetic field at the positive and negative poles for the off-centred case.

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