Guide to Interpretation
US radiological assessments are composed of aerial and ground
measurements and indicate the amounts of radiological material
that has settled on the ground.
Each measurement corresponds to the radiation a person
receives in one hour at that location. AMS data is presented as
exposure rate 1 meter from the ground at the time the
All measurements in this plot are below 0.03 Rem per hour – a
low but not insignificant level.