Mapping to be determined
radioactivity_concentration_of_147Pm_in_air
"Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Pm" means the element "promethium" and "147Pm" is the isotope "promethium-147" with a half-life of 9.57e+02 days.
Climate and Forecast Standard Names