Table XII-2. Low frequency time-varying electric and magnetic fields (Frequency: 0.25 Hz~100 kHz).

Frequency (f)	EF*	Magnetic flux density	MF†
0.25~1.0 Hz		50/f mT	4.08 × 104/f Am−1
1.0~25 Hz	20 kVm−1	50/f mT	4.08 × 104/f Am−1
25~500 Hz	500/f kVm−1	50/f mT	4.08 × 104/f Am−1
500~814 Hz	500/f kVm−1	0.1 mT	81.4 Am−1
0.814~60 kHz	614 Vm−1	0.1 mT	81.4 Am−1
60~100 kHz	614 Vm−1	6/f mT	4,880/f Am−1

*EF: electric field, ^†MF: magnetic field