Special thank you to EMR Aware for posting the following information.
The following document indicates 5 different parameters of EMF’s:
It doesn’t mention the wideband emissions detectable by AM radio though, so I think that makes 6 categories of EMF.
When finding a place with lower EMF from one of these aspects, how often have we accidentally increased another aspect of EMF?
4. AC Magnetic – gaussmeter
from running electricity in appliances, and sometimes caused by wiring errors
5. Static Electric
Synthetic materials, low humidity
6. Static Magnetic
Magnetized steel – bed frames, mattresses, etc.
SOURCE: emraware [email@example.com]