Universal time [hours]

Slope of EM [mV/m.s]

Slope of IFM-Bz [nT/s]

Correlation

EM & IFM-Bz

| Δ B z Δ E M |

00:00-15:00

+2 × 10−5

−11 × 104

−0.88

55.00

15:00-21:00

−6 × 104

+85 × 104

−0.98

14.17

21:00-24:00

+13 × 104

−16 × 10−3

−1

12.31