Mr. John Fitzgerald:

This brochure was an attempt to set out a comparative that is like for like. All of these fields are 50 Hz fields. A DC field is a zero frequency field. This was developed in response to questions and queries on the DC EMF. The fields that are directly above the east-west interconnector cable are of the order of 50 µT at zero Hertz. That is the nature of the fields at full load. The reason some of these are different is that we tried to be true to what they are. The overhead transmission lines are typically away from public areas whereas underground cables are typically in public roads. DC cable is predominantly in the road where possible. The Deputy mentioned the N25. Obviously that is a public space so the general public could be in close proximity to it rather than if it is in a field. That is why they are set out. We could put it on it, but we would need a caveat to say that it is a zero Hertz field.