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Table 4

Magnetic field measurements of 40 Eri B made with the ISIS medium-resolution spectrograph at the WHT.

Date MJD texp Bz Nz
yr-mo-day (s) (Gauss) (Gauss)

2015-02-02 57 055.89 4000 199 ± 393 91 ± 391
2015-02-03 57 056.92 2800 158 ± 204 − 254 ± 186
2015-02-04 57 057.95 3200 574 ± 258 184 ± 261

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