Figure 4
From: Variability of coil inductance measurements inside an interleaving structure

(a) Inductance versus Dcx, the latter ranging between − 25 and + 15 nT; (b) Inductance versus N, where N < 70 cps. Plots in (a) and (b) are obtained on an hourly basis (means were calculated every hour). The variability of Dst and N resembles the circumstances when there was lack of correlation with the DUT.