Space environment (natural and artificial). Geomagnetic reference models Ingestion-build-82061 which may occur at any

which may occur at any location

would not require a rating exceeding that which corresponds to an apparent power of 3 kVA

Provides guidance for practical implementation of a management system for sustainable development in cities and other settlements

airborne installations and all external underground mains

Space environment (natural and artificial). Geomagnetic reference models Ingestion-build-82061 which may occur at any1 Scope This International Standard defines reference models representing the geomagnetic field. It closely mirrors and clarifies specifications which have been in use for many decades. The approach is to represent the corresponding scalar magnetic potential by a spherical harmonic expansion having specified numerical coefficients, called Gauss coefficients. This International Standard covers models in which, at any one time, changes of the magnetic