"San Diego appears to be one of the hardest-hit areas, with a CPM reading of 650, as of October 1. This figure is 60 times higher than it was last year on the same date, despite the fact that San Diego's normal background radiation rate typically hovers around 20 CPM.
CPM: Counts Per Minute."
San Diego appears to be one of the hardest-hit areas, with a CPM reading of 650, as of October 1. This figure is 60 times higher than it was last year on the same date, despite the fact that San Diego's normal background radiation rate typically hovers around 20 CPM.