RTH-Offenbach (hosted by the German Weather Service) broadcasts exercise information using the header "WNXX01 IAEA" through the Global Telecommunication System (GTS)
migration
transmission system
serve as backup to e-mail
1) Time of Arrival (ToA)
This is the product designed to indicate arrival times of a specific (instantaneous or time-integrated) atmospheric concentration level over geographic areas.
but currently 6 hourly colored hatched arrival time areas are planned to be indicated in 24 hourly forecast chart
hatched