Characterisation of electromagnetic fields in buildings

Cumulative distributions of both electric and magnetic fields are given for the indoor environment in Canada. The statistics indicate that an E-field strength susceptibility limit of 3 V/m corresponding to a cumulative probability level of 95.0%, and a susceptibility limit of 5 V/m, with a cumulative probability level of 99.2%, would be adequate for the territory covered. A gamma distribution model of the data is found to be superior to a Gaussian model.